bht-206a/b-mm volume 1 front matter

24
BHT-206A/B-SERIES-MM-1 NOTICE The instructions set forth in this manual, as supplemented or modified by Alert Service Bulletins (ASB) or other directions issued by Bell Helicopter Textron Inc. and Airworthiness Directives (AD) issued by the applicable regulatory agencies, shall be strictly followed. This manual covers 206A, 206B, and 206B3 helicopters SN 4 through and including current production. TH-57/TH-67 helicopters are covered along with the use of manual supplements. 206B1 helicopters are not covered by this manual. FOR MODELS 206A, 206B, AND 206B3 HELICOPTERS MAINTENANCE MANUAL VOLUME 1 GENERAL INFORMATION Export Classification C, ECCN EAR99

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BHT-206A/B-SERIES-MM-1

NOTICEThe instructions set forth in this manual, as supplemented or modified by Alert Service Bulletins (ASB) orother directions issued by Bell Helicopter Textron Inc. and Airworthiness Directives (AD) issued by theapplicable regulatory agencies, shall be strictly followed. This manual covers 206A, 206B, and 206B3helicopters SN 4 through and including current production. TH-57/TH-67 helicopters are covered alongwith the use of manual supplements. 206B1 helicopters are not covered by this manual.

FOR MODELS 206A, 206B, AND 206B3 HELICOPTERS

MAINTENANCE MANUALVOLUME 1

GENERAL INFORMATION

Export Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

NOTICEThe instructions set forth in this manual, as supplemented or modified by Alert Service Bulletins (ASB) orother directions issued by Bell Helicopter Textron Inc. and Airworthiness Directives (AD) issued by theapplicable regulatory agencies, shall be strictly followed. This manual covers 206A, 206B, and 206B3helicopters SN 4 through and including current production. TH-57/TH-67 helicopters are covered alongwith the use of manual supplements. 206B1 helicopters are not covered by this manual.

FOR MODELS 206A, 206B, AND 206B3 HELICOPTERS

MAINTENANCE MANUALVOLUME 1

GENERAL INFORMATION

Export Classification C, ECCN EAR99

7 JANUARY 1998REVISION 14 — 30 APRIL 2013

COPYRIGHT NOTICECOPYRIGHT 2013BELL ® HELICOPTER TEXTRON INC.AND BELL HELICOPTER TEXTRONCANADA LTD.

ALL RIGHTS RESERVED

BHT-206A/B-SERIES-MM-1

Additional copies of this publication may be obtained by contacting:Commercial Publication Distribution Center

Bell Helicopter Textron Inc.P. O. Box 482

Fort Worth, Texas 76101-0482

PROPRIETARY RIGHTS NOTICE

These data are proprietary to Bell Helicopter Textron Inc. Disclosure,reproduction, or use of these data for any purpose other than helicopteroperation or maintenance is forbidden without prior written authorization fromBell Helicopter Textron Inc.

PN Rev. 13 7 NOV 2012 Export Classification C, ECCN EAR99

DESTINATION CONTROL STATEMENT

WARNING — This document contains technical data whose export is restrictedby the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et. seq.) or the ExportAdministration Act of 1979, as amended, Title 50, U.S.C., App. 2401 et. seq.Violations of these export laws are subject to severe criminal penalties.Disseminate in accordance with provisions of DoD Directive 5230.25.

BHT-206A/B-SERIES-MM-1

7 NOV 2012 Rev. 13 Warning

WARNINGTHIS MANUAL APPLIES ONLY TO HELICOPTERS AND COMPONENTSMAINTAINED IN ACCORDANCE WITH BELL HELICOPTER TEXTRON(BELL) APPROVED PROCEDURES USING BELL APPROVED PARTS.

ALL INSPECTION, REPAIR AND OVERHAUL PROCEDURES PUBLISHEDBY BELL, INCLUDING PART RETIREMENT LIFE, ARE BASED SOLELY ONTHE USE OF BELL PARTS THAT HAVE BEEN MAINTAINED USING BELLAPPROVED DATA. THE DATA PUBLISHED HEREIN OR OTHERWISESUPPLIED BY BELL IS NOT APPLICABLE TO NON-BELL PARTS ORPARTS THAT HAVE BEEN REPAIRED USING DATA AND/OR PROCESSESNOT APPROVED BY BELL.

BELL IS NOT RESPONSIBLE FOR ANY PART OTHER THAN THOSE THATIT HAS APPROVED.

BEFORE PERFORMING ANY PROCEDURE CONTAINED IN THIS MANUALYOU MUST INSPECT THE AFFECTED PARTS AND RECORDS FOREVIDENCE OF ANY MANUFACTURE, REPAIR, REWORK OR USE OF APROCESS NOT APPROVED BY BELL.

IF YOU IDENTIFY OR SUSPECT THE USE OF PARTS NOT AUTHORIZEDBY BELL, EITHER REMOVE THE AFFECTED ITEM FROM THE AIRCRAFTOR OBTAIN INSTRUCTIONS FOR CONTINUED AIRWORTHINESS FROMTHE MANUFACTURER OR THE ORGANIZATION THAT APPROVED THEREPAIR.

Export Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

CSS Rev. 13 7 NOV 2012

CUSTOMER SUPPORT AND SERVICES

Flying smart means that no matter where you are, or what time it is, you can make a calland get additional information, clarification, or advice on a technical or operational issueconcerning your helicopter or information contained in our Technical Publications.Product Support Engineering (PSE) is just a phone call away and may be contacted asfollows:

For additional information on Customer Support and Services as well as Product SupportEngineering (PSE) and your local Customer Service Engineering (CSE) network, pleaseaccess http://www.bellhelicopter.com/support.

Model 206 or 407Phone: 450-437-2862 or 800-243-6407 (U.S./Canada)Fax: 450-433-0272E-mail: [email protected]

Model 222, 230, 427, 429, or 430Phone: 450-437-2077 or 800-463-3036 (U.S./Canada)Fax: 450-433-0272E-mail: [email protected]

Model 204, 205, 212, or 412Phone: 450-437-6201 or 800-363-8028 (U.S./Canada)Fax: 450-433-0272E-mail: [email protected]

Model 214, 210, HUEY II and All Bell’s Active and Surplus Military Medium Helicopter ModelsPhone: 817-280-3548Fax: 817-280-2635E-mail: [email protected]

Model OH-58, TH-67, TH-57, Both Active and Surplus MilitaryPhone: 817-280-3548Fax: 817-280-2635E-mail: [email protected]

Export Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

LOG OF REVISIONS

Insert latest revision pages and dispose of superseded ones.

On a revised page, the text and/or illustration affected by the latest revision is shown by a vertical line. A revisedpage with only a vertical line next to the page number indicates that text has shifted or that non-technicalcorrection(s) were made on that page.

Page No. Rev No. Page No. Rev No. Page No. Rev No.

LOG OF PAGES

Original . . . . 0 . . . . . . 07 JAN 98Revision. . . . 1 . . . . . . 21 MAY 02Revision. . . . 2 . . . . . . 07 JUN 02Revision. . . . 3 . . . . . . .12 JUL 04Revision. . . . 4 . . . . . . 28 APR 06

Revision . . . 5 . . . . . . 31 JUL 09Revision . . . 6 . . . . . .07 DEC 09Revision . . . 7 . . . . . .14 APR 10Revision . . . 8 . . . . . . 30 JUN 10Revision . . . 9 . . . . . . 27 SEP 10

Revision . . . 10 . . . . .08 APR 11Revision . . . 11. . . . . 13 OCT 11Revision . . . 12 . . . . .01 JUN 12Revision . . . 14 . . . . 30 APR 13

VOLUME 1Cover . . . . . . . . . . . . . . . . . . . .13Title . . . . . . . . . . . . . . . . . . . . .14PN . . . . . . . . . . . . . . . . . . . . . .13Warning . . . . . . . . . . . . . . . . . .13CSS . . . . . . . . . . . . . . . . . . . . .13A – D . . . . . . . . . . . . . . . . . . . .14E/F . . . . . . . . . . . . . . . . . . . . . .14Help . . . . . . . . . . . . . . . . . . . . .13Customer Feedback. . . . . . . . .13Helicopter Sales Notice . . . . . .14Warranty. . . . . . . . . . . . . . . . . .13BR . . . . . . . . . . . . . . . . . . . . . .14TR . . . . . . . . . . . . . . . . . . . . . .13i – ii. . . . . . . . . . . . . . . . . . . . . .13

Chapter 11/2 . . . . . . . . . . . . . . . . . . . . . . .63 . . . . . . . . . . . . . . . . . . . . . . . .124 – 8 . . . . . . . . . . . . . . . . . . . . . .69/10 . . . . . . . . . . . . . . . . . . . . . .6

Chapter 41 – 12 . . . . . . . . . . . . . . . . . . . .13

Chapter 51 – 2 . . . . . . . . . . . . . . . . . . . . .143/4 . . . . . . . . . . . . . . . . . . . . . .145 – 8 . . . . . . . . . . . . . . . . . . . . .149/10 . . . . . . . . . . . . . . . . . . . . .1411 – 16 . . . . . . . . . . . . . . . . . . .1417/18 . . . . . . . . . . . . . . . . . . . .1419 – 34 . . . . . . . . . . . . . . . . . . .1435/36 . . . . . . . . . . . . . . . . . . . .14

37 – 48 . . . . . . . . . . . . . . . . . . 1449/50. . . . . . . . . . . . . . . . . . . . 1451 – 54 . . . . . . . . . . . . . . . . . . 1455/56. . . . . . . . . . . . . . . . . . . . 1457 – 62 . . . . . . . . . . . . . . . . . . 1463/64. . . . . . . . . . . . . . . . . . . . 1465 – 70 . . . . . . . . . . . . . . . . . . 1471/72. . . . . . . . . . . . . . . . . . . . 1473 – 84 . . . . . . . . . . . . . . . . . . 1485/86. . . . . . . . . . . . . . . . . . . . 1487 – 90 . . . . . . . . . . . . . . . . . . 1491/92. . . . . . . . . . . . . . . . . . . . 1493/94. . . . . . . . . . . . . . . . . . . . 1495 – 106 . . . . . . . . . . . . . . . . . 14107/108. . . . . . . . . . . . . . . . . . 14109 – 110 . . . . . . . . . . . . . . . . 14111/112 . . . . . . . . . . . . . . . . . . 14113/114 . . . . . . . . . . . . . . . . . . 14115 – 118 . . . . . . . . . . . . . . . . 14119/120. . . . . . . . . . . . . . . . . . 14121 – 130 . . . . . . . . . . . . . . . . 14131/132. . . . . . . . . . . . . . . . . . 14133 – 134 . . . . . . . . . . . . . . . . 14135/136. . . . . . . . . . . . . . . . . . 14137/138. . . . . . . . . . . . . . . . . . 14139 – 146 . . . . . . . . . . . . . . . . 14147/148. . . . . . . . . . . . . . . . . . 14149/150. . . . . . . . . . . . . . . . . . 14151 – 154 . . . . . . . . . . . . . . . . 14155/156. . . . . . . . . . . . . . . . . . 14157 – 160 . . . . . . . . . . . . . . . . 14161/162. . . . . . . . . . . . . . . . . . 14163 – 166 . . . . . . . . . . . . . . . . 14167/168. . . . . . . . . . . . . . . . . . 14

169 – 170 . . . . . . . . . . . . . . . . 14171/172 . . . . . . . . . . . . . . . . . . 14173 – 174 . . . . . . . . . . . . . . . . 14175/176 . . . . . . . . . . . . . . . . . . 14177 – 180 . . . . . . . . . . . . . . . . 14181/182 . . . . . . . . . . . . . . . . . . 14183 – 196 . . . . . . . . . . . . . . . . 14197/198 . . . . . . . . . . . . . . . . . . 14199/200 . . . . . . . . . . . . . . . . . . 14201 – 204 . . . . . . . . . . . . . . . . 14

Index MM1 – 16 (Deleted) . . . . . . . . . . . . 5

VOLUME 2Cover . . . . . . . . . . . . . . . . . . . 14Title . . . . . . . . . . . . . . . . . . . . . 14PN . . . . . . . . . . . . . . . . . . . . . . 14

Chapter 61/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 6 . . . . . . . . . . . . . . . . . . . . . 07/8 . . . . . . . . . . . . . . . . . . . . . . . 0

Chapter 71/2 . . . . . . . . . . . . . . . . . . . . . . . 63 – 4 . . . . . . . . . . . . . . . . . . . . . 65/6 . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 81 – 22 . . . . . . . . . . . . . . . . . . . . 323 . . . . . . . . . . . . . . . . . . . . . . . 924 – 32 . . . . . . . . . . . . . . . . . . . 333/34 . . . . . . . . . . . . . . . . . . . . . 3

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Chapter 91/2. . . . . . . . . . . . . . . . . . . . . . . 63 – 4 . . . . . . . . . . . . . . . . . . . . . 6

Chapter 101/2. . . . . . . . . . . . . . . . . . . . . . . 63 – 6 . . . . . . . . . . . . . . . . . . . . . 6

Chapter 111/2. . . . . . . . . . . . . . . . . . . . . . . 63 – 18 . . . . . . . . . . . . . . . . . . . . 619/20. . . . . . . . . . . . . . . . . . . . . 6

Chapter 121 . . . . . . . . . . . . . . . . . . . . . . . . 42 . . . . . . . . . . . . . . . . . . . . . . . 103/4. . . . . . . . . . . . . . . . . . . . . . . 45 – 6 . . . . . . . . . . . . . . . . . . . . . 47/8. . . . . . . . . . . . . . . . . . . . . . . 49 – 14 . . . . . . . . . . . . . . . . . . . . 415/16. . . . . . . . . . . . . . . . . . . . . 417 – 24 . . . . . . . . . . . . . . . . . . . 425 – 26 . . . . . . . . . . . . . . . . . . . 827/28. . . . . . . . . . . . . . . . . . . . . 429 – 30 . . . . . . . . . . . . . . . . . . . 431/32. . . . . . . . . . . . . . . . . . . . 1433 . . . . . . . . . . . . . . . . . . . . . . 1034 . . . . . . . . . . . . . . . . . . . . . . . 435 – 36 . . . . . . . . . . . . . . . . . . . 937 – 38 . . . . . . . . . . . . . . . . . . . 439/40. . . . . . . . . . . . . . . . . . . . 1041 – 44 . . . . . . . . . . . . . . . . . . . 445/46. . . . . . . . . . . . . . . . . . . . . 4

VOLUME 3Cover . . . . . . . . . . . . . . . . . . . 14Title . . . . . . . . . . . . . . . . . . . . . 14PN. . . . . . . . . . . . . . . . . . . . . . 14

Chapter 181 – 2 . . . . . . . . . . . . . . . . . . . . . 03/4. . . . . . . . . . . . . . . . . . . . . . . 05 – 24 . . . . . . . . . . . . . . . . . . . . 025/26. . . . . . . . . . . . . . . . . . . . . 027 – 34 . . . . . . . . . . . . . . . . . . . 035 – 36 . . . . . . . . . . . . . . . . . . . 437 – 38 . . . . . . . . . . . . . . . . . . . 038A/38B . . . . . . . . . . . . . . . . . . 439 – 58 . . . . . . . . . . . . . . . . . . . 0

59 – 60 . . . . . . . . . . . . . . . . . . . 460A/60B . . . . . . . . . . . . . . . . . . 461 – 70 . . . . . . . . . . . . . . . . . . . 071 – 72 . . . . . . . . . . . . . . . . . . . 473 . . . . . . . . . . . . . . . . . . . . . . . 074 . . . . . . . . . . . . . . . . . . . . . . 1475 – 78 . . . . . . . . . . . . . . . . . . . 079 – 80 . . . . . . . . . . . . . . . . . . . 4

Chapter 211 – 14 . . . . . . . . . . . . . . . . . . . . 615/16 . . . . . . . . . . . . . . . . . . . . . 617 – 20 . . . . . . . . . . . . . . . . . . . 6

Chapter 251 – 8 . . . . . . . . . . . . . . . . . . . . . 69/10 . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 261/2 . . . . . . . . . . . . . . . . . . . . . . . 63 – 4 . . . . . . . . . . . . . . . . . . . . . 65/6 . . . . . . . . . . . . . . . . . . . . . . . 6

VOLUME 4Cover . . . . . . . . . . . . . . . . . . . 13Title . . . . . . . . . . . . . . . . . . . . . 13PN . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 281 – 2 . . . . . . . . . . . . . . . . . . . . 113 . . . . . . . . . . . . . . . . . . . . . . . . 04 . . . . . . . . . . . . . . . . . . . . . . . . 85 . . . . . . . . . . . . . . . . . . . . . . . . 06 . . . . . . . . . . . . . . . . . . . . . . . . 87 – 11 . . . . . . . . . . . . . . . . . . . . 012 . . . . . . . . . . . . . . . . . . . . . . 1112A/12B . . . . . . . . . . . . . . . . . 1113 – 15 . . . . . . . . . . . . . . . . . . . 016 . . . . . . . . . . . . . . . . . . . . . . 1117 – 40 . . . . . . . . . . . . . . . . . . . 041/42 . . . . . . . . . . . . . . . . . . . . 11

Chapter 291 . . . . . . . . . . . . . . . . . . . . . . . 102 . . . . . . . . . . . . . . . . . . . . . . . 113 – 8 . . . . . . . . . . . . . . . . . . . . . 09 – 10 . . . . . . . . . . . . . . . . . . . . 510A/10B . . . . . . . . . . . . . . . . . 1011 . . . . . . . . . . . . . . . . . . . . . . . 5

12. . . . . . . . . . . . . . . . . . . . . . . 1012A/12B. . . . . . . . . . . . . . . . . . 1013. . . . . . . . . . . . . . . . . . . . . . . 1014. . . . . . . . . . . . . . . . . . . . . . . . 514A . . . . . . . . . . . . . . . . . . . . . . 514B . . . . . . . . . . . . . . . . . . . . . . 614C/14D . . . . . . . . . . . . . . . . . . 515. . . . . . . . . . . . . . . . . . . . . . . 1016 – 20. . . . . . . . . . . . . . . . . . . . 520A/20B. . . . . . . . . . . . . . . . . . . 521. . . . . . . . . . . . . . . . . . . . . . . 1322 – 24. . . . . . . . . . . . . . . . . . . 1024A/24B. . . . . . . . . . . . . . . . . . 1025 – 30. . . . . . . . . . . . . . . . . . . . 031. . . . . . . . . . . . . . . . . . . . . . . . 832. . . . . . . . . . . . . . . . . . . . . . . 1133/34 . . . . . . . . . . . . . . . . . . . . . 8

VOLUME 5Cover . . . . . . . . . . . . . . . . . . . . . 6Title . . . . . . . . . . . . . . . . . . . . . . 8PN . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 301/2 . . . . . . . . . . . . . . . . . . . . . . . 63/4 . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 321 – 3. . . . . . . . . . . . . . . . . . . . . . 04. . . . . . . . . . . . . . . . . . . . . . . . . 85 – 22. . . . . . . . . . . . . . . . . . . . . 023/24 . . . . . . . . . . . . . . . . . . . . . 025 – 26. . . . . . . . . . . . . . . . . . . . 027/28 . . . . . . . . . . . . . . . . . . . . . 029 – 54. . . . . . . . . . . . . . . . . . . . 0

Chapter 521 – 2. . . . . . . . . . . . . . . . . . . . . . 82A/2B. . . . . . . . . . . . . . . . . . . . . 83. . . . . . . . . . . . . . . . . . . . . . . . . 84. . . . . . . . . . . . . . . . . . . . . . . . . 04A/4B. . . . . . . . . . . . . . . . . . . . . 85 – 26. . . . . . . . . . . . . . . . . . . . . 027. . . . . . . . . . . . . . . . . . . . . . . . 828. . . . . . . . . . . . . . . . . . . . . . . . 029 – 30. . . . . . . . . . . . . . . . . . . . 830A/30B. . . . . . . . . . . . . . . . . . . 831 – 32. . . . . . . . . . . . . . . . . . . . 033 – 34. . . . . . . . . . . . . . . . . . . . 8

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35 – 42 . . . . . . . . . . . . . . . . . . . .043/44 . . . . . . . . . . . . . . . . . . . . .0

Chapter 531 – 10 . . . . . . . . . . . . . . . . . . . . .411/12 . . . . . . . . . . . . . . . . . . . . .613 – 22 . . . . . . . . . . . . . . . . . . . .423 . . . . . . . . . . . . . . . . . . . . . . . .824 – 30 . . . . . . . . . . . . . . . . . . . .431/32 . . . . . . . . . . . . . . . . . . . . .433 – 36 . . . . . . . . . . . . . . . . . . . .437/38 . . . . . . . . . . . . . . . . . . . . .439 – 40 . . . . . . . . . . . . . . . . . . . .4

VOLUME 6Cover . . . . . . . . . . . . . . . . . . . .14Title . . . . . . . . . . . . . . . . . . . . .14PN . . . . . . . . . . . . . . . . . . . . . .14

Chapter 621 – 2 . . . . . . . . . . . . . . . . . . . . .142A/2B . . . . . . . . . . . . . . . . . . . . .63 . . . . . . . . . . . . . . . . . . . . . . . . .04 . . . . . . . . . . . . . . . . . . . . . . . . .95 . . . . . . . . . . . . . . . . . . . . . . . . .66 . . . . . . . . . . . . . . . . . . . . . . . . .87 – 8 . . . . . . . . . . . . . . . . . . . . . .09 – 10 . . . . . . . . . . . . . . . . . . . . .611 – 12 . . . . . . . . . . . . . . . . . . . .013/14 . . . . . . . . . . . . . . . . . . . . .015 – 16 . . . . . . . . . . . . . . . . . . .1416A/16B . . . . . . . . . . . . . . . . . .1422 . . . . . . . . . . . . . . . . . . . . . . . .023/24 . . . . . . . . . . . . . . . . . . . . .025 – 30 . . . . . . . . . . . . . . . . . . . .031/32 . . . . . . . . . . . . . . . . . . . . .033 – 36 . . . . . . . . . . . . . . . . . . . .037 . . . . . . . . . . . . . . . . . . . . . . .1438 . . . . . . . . . . . . . . . . . . . . . . . .638A/38B . . . . . . . . . . . . . . . . . . .639 . . . . . . . . . . . . . . . . . . . . . . .1440 – 42 . . . . . . . . . . . . . . . . . . . .043 – 46 . . . . . . . . . . . . . . . . . . .1446A – 46B . . . . . . . . . . . . . . . .1445/46 . . . . . . . . . . . . . . . . . . . . .047 – 57 . . . . . . . . . . . . . . . . . . . .058 . . . . . . . . . . . . . . . . . . . . . . .1158A/58B . . . . . . . . . . . . . . . . . .1159 – 60 . . . . . . . . . . . . . . . . . . . .0

61/62. . . . . . . . . . . . . . . . . . . . . 0

Chapter 631 – 2 . . . . . . . . . . . . . . . . . . . . . 93/4. . . . . . . . . . . . . . . . . . . . . . . 95 – 7 . . . . . . . . . . . . . . . . . . . . . 98 – 15 . . . . . . . . . . . . . . . . . . . . 616 . . . . . . . . . . . . . . . . . . . . . . 1217 – 30 . . . . . . . . . . . . . . . . . . . 631 . . . . . . . . . . . . . . . . . . . . . . 1232 – 55 . . . . . . . . . . . . . . . . . . . 656 . . . . . . . . . . . . . . . . . . . . . . 1057 – 60 . . . . . . . . . . . . . . . . . . . 6

VOLUME 7Cover . . . . . . . . . . . . . . . . . . . . 6Title . . . . . . . . . . . . . . . . . . . . . 10PN. . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 641/2. . . . . . . . . . . . . . . . . . . . . . . 63/4. . . . . . . . . . . . . . . . . . . . . . . 65 – 14 . . . . . . . . . . . . . . . . . . . . 615 . . . . . . . . . . . . . . . . . . . . . . . 816 – 22 . . . . . . . . . . . . . . . . . . . 623 . . . . . . . . . . . . . . . . . . . . . . . 724 – 25 . . . . . . . . . . . . . . . . . . . 626 . . . . . . . . . . . . . . . . . . . . . . . 727 . . . . . . . . . . . . . . . . . . . . . . . 628 . . . . . . . . . . . . . . . . . . . . . . . 729 – 30 . . . . . . . . . . . . . . . . . . . 631/32. . . . . . . . . . . . . . . . . . . . . 6

Chapter 651 – 2 . . . . . . . . . . . . . . . . . . . . 102A/2B . . . . . . . . . . . . . . . . . . . . 63 . . . . . . . . . . . . . . . . . . . . . . . . 04 . . . . . . . . . . . . . . . . . . . . . . . 105 – 12 . . . . . . . . . . . . . . . . . . . . 013/14. . . . . . . . . . . . . . . . . . . . . 015 – 18 . . . . . . . . . . . . . . . . . . . 018A/18B . . . . . . . . . . . . . . . . . . 619 – 20 . . . . . . . . . . . . . . . . . . 1021 . . . . . . . . . . . . . . . . . . . . . . . 022 . . . . . . . . . . . . . . . . . . . . . . . 823 . . . . . . . . . . . . . . . . . . . . . . . 024 . . . . . . . . . . . . . . . . . . . . . . . 624A – 24C. . . . . . . . . . . . . . . . . 624D. . . . . . . . . . . . . . . . . . . . . 10

25 – 26 . . . . . . . . . . . . . . . . . . 1026A/26B . . . . . . . . . . . . . . . . . . 827 – 28 . . . . . . . . . . . . . . . . . . . 628A – 28B . . . . . . . . . . . . . . . . . 628C/28D . . . . . . . . . . . . . . . . . . 629 . . . . . . . . . . . . . . . . . . . . . . 1030 . . . . . . . . . . . . . . . . . . . . . . . 030A/30B . . . . . . . . . . . . . . . . . 1031 . . . . . . . . . . . . . . . . . . . . . . 1032 – 33 . . . . . . . . . . . . . . . . . . . 034 . . . . . . . . . . . . . . . . . . . . . . . 634A/34B . . . . . . . . . . . . . . . . . . 635 . . . . . . . . . . . . . . . . . . . . . . . 036 . . . . . . . . . . . . . . . . . . . . . . . 837 – 38 . . . . . . . . . . . . . . . . . . . 638A – 38B . . . . . . . . . . . . . . . . . 738C . . . . . . . . . . . . . . . . . . . . . . 638D . . . . . . . . . . . . . . . . . . . . . . 738E – 38I. . . . . . . . . . . . . . . . . . 638J . . . . . . . . . . . . . . . . . . . . . 1038K/38L. . . . . . . . . . . . . . . . . . . 839 – 40 . . . . . . . . . . . . . . . . . . 1040A/40B . . . . . . . . . . . . . . . . . 1041 – 42 . . . . . . . . . . . . . . . . . . . 643 – 47 . . . . . . . . . . . . . . . . . . . 048 – 52 . . . . . . . . . . . . . . . . . . 10

VOLUME 8Cover . . . . . . . . . . . . . . . . . . . . 5Title . . . . . . . . . . . . . . . . . . . . . 11PN . . . . . . . . . . . . . . . . . . . . . . . 5

Chapter 671 – 4 . . . . . . . . . . . . . . . . . . . . . 84A/4B . . . . . . . . . . . . . . . . . . . . 85 – 8 . . . . . . . . . . . . . . . . . . . . . 09 – 10 . . . . . . . . . . . . . . . . . . . . 510A/10B . . . . . . . . . . . . . . . . . . 511 – 12 . . . . . . . . . . . . . . . . . . . 013/14 . . . . . . . . . . . . . . . . . . . . . 015 . . . . . . . . . . . . . . . . . . . . . . . 516 . . . . . . . . . . . . . . . . . . . . . . . 017/18 . . . . . . . . . . . . . . . . . . . . . 019 – 22 . . . . . . . . . . . . . . . . . . . 023/24 . . . . . . . . . . . . . . . . . . . . . 025 – 27 . . . . . . . . . . . . . . . . . . . 028 . . . . . . . . . . . . . . . . . . . . . . 1128A/28B . . . . . . . . . . . . . . . . . . 529 . . . . . . . . . . . . . . . . . . . . . . . 5

30 APR 2013 Rev. 14 CExport Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

LOG OF PAGES (CONT)

Page No. Rev No. Page No. Rev No. Page No. Rev No.

30 – 32 . . . . . . . . . . . . . . . . . . 1132A/32B . . . . . . . . . . . . . . . . . . 533 – 34 . . . . . . . . . . . . . . . . . . . 035 – 38 . . . . . . . . . . . . . . . . . . . 838A/38B . . . . . . . . . . . . . . . . . . 839 . . . . . . . . . . . . . . . . . . . . . . . 040 . . . . . . . . . . . . . . . . . . . . . . . 541 – 42 . . . . . . . . . . . . . . . . . . . 043 – 46 . . . . . . . . . . . . . . . . . . . 546A/46B . . . . . . . . . . . . . . . . . . 547 – 48 . . . . . . . . . . . . . . . . . . . 049 – 50 . . . . . . . . . . . . . . . . . . . 551 – 55 . . . . . . . . . . . . . . . . . . . 056 – 58 . . . . . . . . . . . . . . . . . . . 558A/58B . . . . . . . . . . . . . . . . . . 559 – 67 . . . . . . . . . . . . . . . . . . . 068 – 71 . . . . . . . . . . . . . . . . . . . 572 . . . . . . . . . . . . . . . . . . . . . . . 073/74. . . . . . . . . . . . . . . . . . . . . 075 – 78 . . . . . . . . . . . . . . . . . . . 579 – 84 . . . . . . . . . . . . . . . . . . . 085 . . . . . . . . . . . . . . . . . . . . . . . 586 – 90 . . . . . . . . . . . . . . . . . . . 291/92. . . . . . . . . . . . . . . . . . . . . 293 – 101 . . . . . . . . . . . . . . . . . . 2102 – 104 . . . . . . . . . . . . . . . . . 5105 – 107 . . . . . . . . . . . . . . . . . 2108 . . . . . . . . . . . . . . . . . . . . . . 5109 – 118 . . . . . . . . . . . . . . . . . 2

VOLUME 9Cover . . . . . . . . . . . . . . . . . . . . 6Title . . . . . . . . . . . . . . . . . . . . . 10PN. . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 711 – 4 . . . . . . . . . . . . . . . . . . . . . 64A/4B . . . . . . . . . . . . . . . . . . . . 65 – 12 . . . . . . . . . . . . . . . . . . . . 013 – 15 . . . . . . . . . . . . . . . . . . . 816 . . . . . . . . . . . . . . . . . . . . . . . 616A/16B . . . . . . . . . . . . . . . . . . 817 – 22 . . . . . . . . . . . . . . . . . . . 023/24. . . . . . . . . . . . . . . . . . . . . 025 – 28 . . . . . . . . . . . . . . . . . . . 029/30. . . . . . . . . . . . . . . . . . . . . 031 – 40 . . . . . . . . . . . . . . . . . . . 041 – 43 . . . . . . . . . . . . . . . . . . . 844 . . . . . . . . . . . . . . . . . . . . . . . 6

44/44B. . . . . . . . . . . . . . . . . . . . 645 – 50 . . . . . . . . . . . . . . . . . . . 051/52 . . . . . . . . . . . . . . . . . . . . . 053 – 56 . . . . . . . . . . . . . . . . . . . 057/58 . . . . . . . . . . . . . . . . . . . . . 059 – 70 . . . . . . . . . . . . . . . . . . . 071 – 74 . . . . . . . . . . . . . . . . . . 1074A/74B . . . . . . . . . . . . . . . . . 1075 – 84 . . . . . . . . . . . . . . . . . . . 085/86 . . . . . . . . . . . . . . . . . . . . . 0

Chapter 751/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 6 . . . . . . . . . . . . . . . . . . . . . 0

Chapter 761 . . . . . . . . . . . . . . . . . . . . . . . . 72 . . . . . . . . . . . . . . . . . . . . . . . . 23/4 . . . . . . . . . . . . . . . . . . . . . . . 75 – 8 . . . . . . . . . . . . . . . . . . . . . 29 . . . . . . . . . . . . . . . . . . . . . . . . 710 . . . . . . . . . . . . . . . . . . . . . . . 211 – 12 . . . . . . . . . . . . . . . . . . . 713 . . . . . . . . . . . . . . . . . . . . . . . 214 . . . . . . . . . . . . . . . . . . . . . . . 615 – 16 . . . . . . . . . . . . . . . . . . . 716A/16B . . . . . . . . . . . . . . . . . . 717 – 28 . . . . . . . . . . . . . . . . . . . 229 – 31 . . . . . . . . . . . . . . . . . . . 732 – 34 . . . . . . . . . . . . . . . . . . . 235/36 . . . . . . . . . . . . . . . . . . . . . 237 – 42 . . . . . . . . . . . . . . . . . . . 243/44 . . . . . . . . . . . . . . . . . . . . . 245/46 . . . . . . . . . . . . . . . . . . . . . 247/48 . . . . . . . . . . . . . . . . . . . . . 249/50 . . . . . . . . . . . . . . . . . . . . . 251/52 . . . . . . . . . . . . . . . . . . . . . 253/54 . . . . . . . . . . . . . . . . . . . . . 255 – 68 . . . . . . . . . . . . . . . . . . . 269/70 . . . . . . . . . . . . . . . . . . . . . 271/72 . . . . . . . . . . . . . . . . . . . . . 273/74 . . . . . . . . . . . . . . . . . . . . . 275/76 . . . . . . . . . . . . . . . . . . . . . 777 – 82 . . . . . . . . . . . . . . . . . . . 283/84 . . . . . . . . . . . . . . . . . . . . . 2

Chapter 791/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 4 . . . . . . . . . . . . . . . . . . . . . 0

5/6 . . . . . . . . . . . . . . . . . . . . . . . 07 – 10. . . . . . . . . . . . . . . . . . . . . 0

VOLUME 10Cover . . . . . . . . . . . . . . . . . . . . . 7Title . . . . . . . . . . . . . . . . . . . . . 11PN . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 951 – 2. . . . . . . . . . . . . . . . . . . . . 112A/2B. . . . . . . . . . . . . . . . . . . . 113 – 5. . . . . . . . . . . . . . . . . . . . . . 06. . . . . . . . . . . . . . . . . . . . . . . . . 77 – 18. . . . . . . . . . . . . . . . . . . . . 019/20 . . . . . . . . . . . . . . . . . . . . . 721 – 22. . . . . . . . . . . . . . . . . . . . 023. . . . . . . . . . . . . . . . . . . . . . . 1124 – 28. . . . . . . . . . . . . . . . . . . . 029 – 30. . . . . . . . . . . . . . . . . . . 1130A/30B. . . . . . . . . . . . . . . . . . 1131 – 32. . . . . . . . . . . . . . . . . . . 1032A/32B. . . . . . . . . . . . . . . . . . 1033 – 36. . . . . . . . . . . . . . . . . . . . 037. . . . . . . . . . . . . . . . . . . . . . . . 738. . . . . . . . . . . . . . . . . . . . . . . . 039/40 . . . . . . . . . . . . . . . . . . . . . 0

Chapter 961 – 2. . . . . . . . . . . . . . . . . . . . . . 03 – 6. . . . . . . . . . . . . . . . . . . . . 106A/6B. . . . . . . . . . . . . . . . . . . . 107 – 20. . . . . . . . . . . . . . . . . . . . . 021/22 . . . . . . . . . . . . . . . . . . . . . 023 – 38. . . . . . . . . . . . . . . . . . . . 039. . . . . . . . . . . . . . . . . . . . . . . 1040. . . . . . . . . . . . . . . . . . . . . . . . 041 – 42. . . . . . . . . . . . . . . . . . . 1042A/42B. . . . . . . . . . . . . . . . . . 1043 – 50. . . . . . . . . . . . . . . . . . . . 051/52 . . . . . . . . . . . . . . . . . . . . . 053 – 64. . . . . . . . . . . . . . . . . . . . 065 – 68. . . . . . . . . . . . . . . . . . . . 969 – 78. . . . . . . . . . . . . . . . . . . . 079/80 . . . . . . . . . . . . . . . . . . . . . 081/82 . . . . . . . . . . . . . . . . . . . . . 083 – 98. . . . . . . . . . . . . . . . . . . . 0

VOLUME 11Cover . . . . . . . . . . . . . . . . . . . . . 7

D Rev. 14 30 APR 2013 Export Classification C, ECCN EAR99

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LOG OF PAGES (CONT)

Page No. Rev No. Page No. Rev No. Page No. Rev No.

Title . . . . . . . . . . . . . . . . . . . . . .7PN . . . . . . . . . . . . . . . . . . . . . . .7

Chapter 971 – 8 . . . . . . . . . . . . . . . . . . . . . .09/10 . . . . . . . . . . . . . . . . . . . . . .011/12 . . . . . . . . . . . . . . . . . . . . .013/14 . . . . . . . . . . . . . . . . . . . . .015/16 . . . . . . . . . . . . . . . . . . . . .017/18 . . . . . . . . . . . . . . . . . . . . .019 – 32 . . . . . . . . . . . . . . . . . . . .033/34 . . . . . . . . . . . . . . . . . . . . .035 – 64 . . . . . . . . . . . . . . . . . . . .0

VOLUME 12Cover . . . . . . . . . . . . . . . . . . . . .0Title . . . . . . . . . . . . . . . . . . . . . .4PN . . . . . . . . . . . . . . . . . . . . . . .4

Chapter 981/2 . . . . . . . . . . . . . . . . . . . . . . .03 – 12 . . . . . . . . . . . . . . . . . . . . .013 – 14 . . . . . . . . . . . . . . . . . . . .414A – 14B . . . . . . . . . . . . . . . . .414C/14D. . . . . . . . . . . . . . . . . . .415 – 64 . . . . . . . . . . . . . . . . . . . .065/66 . . . . . . . . . . . . . . . . . . . . .0

VOLUME 13Cover . . . . . . . . . . . . . . . . . . . . 0Title . . . . . . . . . . . . . . . . . . . . . . 0PN. . . . . . . . . . . . . . . . . . . . . . . 0

Chapter 991/2. . . . . . . . . . . . . . . . . . . . . . . 0

MMS-011/2. . . . . . . . . . . . . . . . . . . . . . . 03 – 6 . . . . . . . . . . . . . . . . . . . . . 0

MMS-021/2. . . . . . . . . . . . . . . . . . . . . . . 03 – 12 . . . . . . . . . . . . . . . . . . . . 0

MMS-031/2. . . . . . . . . . . . . . . . . . . . . . . 03 – 6 . . . . . . . . . . . . . . . . . . . . . 0

MMS-041/2. . . . . . . . . . . . . . . . . . . . . . . 03 – 6 . . . . . . . . . . . . . . . . . . . . . 0

MMS-051/2. . . . . . . . . . . . . . . . . . . . . . . 0

3 – 4 . . . . . . . . . . . . . . . . . . . . . 0

MMS-061/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 22 . . . . . . . . . . . . . . . . . . . . 023/24 . . . . . . . . . . . . . . . . . . . . . 0

MMS-071/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 10 . . . . . . . . . . . . . . . . . . . . 011/12 . . . . . . . . . . . . . . . . . . . . . 0

MMS-081/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 18 . . . . . . . . . . . . . . . . . . . . 019/20 . . . . . . . . . . . . . . . . . . . . . 0

MMS-091/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 4 . . . . . . . . . . . . . . . . . . . . . 05/6 . . . . . . . . . . . . . . . . . . . . . . . 0

MMS-101/2 . . . . . . . . . . . . . . . . . . . . . . . 03 – 24 . . . . . . . . . . . . . . . . . . . . 0

30 APR 2013 Rev. 14 E/FExport Classification C, ECCN EAR99

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7 NOV 2012 Rev. 13 Warranty

SPARE PARTS WARRANTYONE YEAR/1,000 HOURS PRORATED

WARRANTY AND REMEDY: Seller warrants each new helicopter part or helicopter part reconditioned by seller to be free from defectin material and workmanship under normal use and service and if installed on Bell model helicopters. Seller�s sole obligation under thiswarranty is limited to replacement or repair of parts which are determined to Seller�s reasonable satisfaction to have been defectivewith 1,000 hours of operation or one (1) year after installation, whichever occurs first and reimbursement of reasonable freight charges.After 200 hours of use, there will be a prorated charge to the Purchaser for replacement parts (prorating the hours of total use againstthe then applicable part life or 2,000 hours, whichever is the lesser). Defective parts must be reported in writing to the Seller�s WarrantyAdministration within 90 days of being found defective. Replacement of parts may be with either new or reconditioned parts, at Seller�selection. Warranty adjustment is contingent upon the Purchaser complying with the Warranty Remedies as described in theCommercial Warranty Information brochure and the Seller�s Warranty Administration disposition instructions for defective parts. Failureto comply with all of the terms of this paragraph may, at Seller�s sole option, void this warranty.

NOTE: Parts, components and assemblies of all new helicopters may have been restored or reworked due to mars, blemishes, dentsor other irregularities during the manufacturing process. Such restoration and/or rework is permitted under Seller�s approvedmanufacturing and engineering processes and guidelines. The restoration and/or rework so completed does not render such itemsdefective in material or workmanship.

THIS WARRANTY IS GIVEN AND ACCEPTED IN PLACE OF (i) ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS ORIMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANT ABILITY ANDFITNESS FOR A PARTICULAR PURPOSE AND (ii) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACTORIN TORT (DELICT), INCLUDING PRODUCT LIABILITIES BASED UPON STRICT LIABILITY, NEGLIGENCE, OR IMPLIEDWARRANTY IN LAW.

This warranty is the only warranty made by Seller. The Purchaser�s sole remedy for a breach of this warranty or any defect in a part isthe repair or replacement of helicopter parts and reimbursement of reasonable freight charges as provided herein. Seller excludesliability, whether as a result of a breach of contract or warranty, negligence or strict product liability, for incidental or consequentialdamages, including without limitation, damage to the helicopter or other property, costs and expenses resulting from required changesor modifications to helicopter components and assemblies, changes in retirement lives and overhaul periods, local customs fees andtaxes, and costs or expenses for commercial losses or lost profits due to loss of use or grounding of helicopters or otherwise.

Seller makes no warranty and disclaims all liability in contract or in tort (delict), including, without limitation, negligence and strict tort(delictual) liability, with respect to work performed by third parties at Purchaser�s request and with respect to engines, engineaccessories, batteries, radios, and avionics, except Seller assigns each manufacturer�s warranty to Purchaser to the extent suchmanufacturer�s warranty exists and is assignable.

This warranty shall not apply to any helicopter part which has been repaired or altered outside Seller�s factory in any way so as, inSeller�s judgment, to affect its stability, safety or reliability, or which has been subject to misuse, negligence or accident, or which hasbeen installed in any aircraft which has been destroyed unless that helicopter has been rebuilt by Bell. A list of destroyed aircraft isobtainable from Bell Product Support. Repairs and alterations which use or incorporate parts and components other than genuine Bellparts or parts approved by Bell for direct acquisition from sources other than Bell itself are not warranted by Bell, and this warranty shallbe void to the extent that such repairs and alterations, in Seller�s sole judgment, affect the stability, safety or reliability of the helicopteror any part thereof, or damage genuine Bell or Bell-approved parts. No person, corporation or organization, including Bell CustomerService Facilities, is authorized by Seller to assume for it any other liability in connection with the sale of its helicopters and parts.

NO STATEMENT, WHETHER WRITTEN OR ORAL, MADE BY ANY PERSON, CORPORATION OR ORGANIZATION, INCLUDINGBELL CUSTOMER SERVICE FACILITIES MAY BE TAKEN AS A WARRANTY NOR WILL IT BIND SELLER.

Seller makes no warranty and disclaims all liability with respect to components or parts damaged by, or worn due to, corrosion. Sellermakes no warranty and disclaims all liability for consumables (wear items) which are defined as items required for normal and routinemaintenance or replaced at scheduled intervals shorter than the warranty period. �Consumables� include but are not limited to engineand hydraulic oil, oil filters, packings and o-rings, anti-corrosion and/or sealing compounds, brush plating material, nuts, bolts, washers,screws, fluids, compounds, and standard aircraft hardware that is readily available to aircraft operators from sources other than Seller.

All legal actions based upon claims or disputes pertaining to or involving this warranty including, but not limited to, Seller�s denial of anyclaim or portion thereof under this warranty, must be filed in the courts of general jurisdiction of Tarrant County, Texas or in the UnitedStates District Court for the Northern District of Texas, Ft. Worth Division located in Ft. Worth, Tarrant County, Texas. In the event thatPurchaser files such an action in either of the court systems identified above, and a final judgment in Seller�s favor is rendered by suchcourt, then Purchaser shall indemnify Seller for all costs, expenses and attorneys� fees incurred by Seller in defense of such claims. Inthe event Purchaser files such a legal action in a court other than those specified, and Seller successfully obtains dismissal of thataction or transfer thereof to the above described court systems, then Purchaser shall indemnify Seller for all costs, expenses andattorneys� fees incurred by Seller in obtaining such dismissal or transfer.

January 2007

Export Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

BULLETIN RECORD

Unless otherwise specified, all applicable Alert Service Bulletins and Technical Bulletins issued prior to andincluding the bulletins listed below have been incorporated in this manual. Subsequent applicable bulletins will beincorporated in future revisions/reissues.

ALERT SERVICE BULLETINS

ASB NUMBER SUBJECT DATE

206-11-127 Control Box Assembly P/N 206-375-017-101, Recall of 3 May 2011

The following Alert Service Bulletins have not been incorporated: 206-12-129 and 206-11-128.

TECHNICAL BULLETINS

TB NUMBER SUBJECT DATE

206-12-202 Fuel Transfer Pump and Centrifual Boost Pump Canister,Upgrade

31 October 2012

Technical Bulletins issued prior to 1990 are currently being reviewed for incorporation and the BR page willbe updated to reflect this information at a future revision.

The following Technical Bulletins have not been incorporated: 206-13-204, 206-12-203, 206-11-98,206-07-192, 206-04-181, 206-99-170A, 206-95-158, and 206-95-152.

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30 APR 2013 Rev. 14 BRExport Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

TEMPORARY REVISION RECORD

This Temporary Revision Record provides a current listing of active Temporary Revisions against the manual.Temporary Revisions, which have been canceled/incorporated, will only be maintained on the record until the nextrevision is issued. If there are no Temporary Revisions shown on the record, this is confirmation that there are noTemporary Revisions issued against the manual.

TEMP. REV. NO. TITLE DATE ISSUED DATE CANCELED

TR Rev. 13 7 NOV 2012

NOTE: For tracking purposes, Temporary Revisions are now being numbered (Example: TR-1).

Export Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

LIST OF CHAPTERS

Title Chapter

General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Airworthiness Limitations Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Inspections and Component Overhaul Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Dimensions and Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Lifting and Jacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Weight and Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Parking and Mooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Placards and Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Rotor Analysis Diagnostic System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Air Distribution (Ventilation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Equipment and Furnishings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Fire Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Fuel System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Hydraulic System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Ice and Rain Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Landing Gear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Doors and Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Fuselage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Main Rotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Main Rotor Drive System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Tail Rotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Tail Rotor Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Flight Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Power Plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Air System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Engine Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Engine Oil System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Instrument System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Avionics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

7 NOV 2012 Rev. 13 iExport Classification C, ECCN EAR99

BHT-206A/B-SERIES-MM-1

LIST OF CHAPTERS (CONT)

Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

ii Rev. 13 7 NOV 2012 Export Classification C, ECCN EAR99