CUSTOMER :

REVISION N°:

TSN : TSI :

CSN : CSI :

SB CONFIGURATION : AS RECEIVED : O AFTER REPAIR (PLANNED) : X1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

o o o o o o o o o o o26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

o o o o o x x x x x51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75o o o o o o o o o o o o x o o76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100x o o o o o o o o x o o o x

YES x NO

PRIMARY FINDINGS :BEARING YES NOCARBON SEAL / FLOATING RING KNOWN FAILURE MODE x

COMBUSTION CHAMBER INVESTIGATION REPORT x

GEARBOX INCOMING TEST RUN x

FOD CUSTOMER PRESENT x

LRU`S PRELIMINARY FINDING REPORT x

NO FAILURE FOUND ATTACHMENTS x

S/N AT DEPARTURE

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

This report details the maintenance and repair service Lufthansa recently provided for your company.Included in this Shop Findings Report are the following information:1. Technical Data

APU PRODUCT ENGINEER

MODULE CONFIGURATIONS/N AT ARRIVAL

COMPRESSOR

WRITER

SP-G 910140SP-G 910227

V42-C848V42-C848

V26-HB017HD441

APU P/N :

EI-CZG

CUSTOMER`S REASON FOR REMOVAL :

170101-106

EVENT N° :

SP-E912042

16143

APU S/N :

1379

TURBINE

18.04.07

APS 2000 Shop Findings Report

2839

2655

AIRCRAFT REGISTRATION:

685265

Air One

R/O N° : 78202418

DATE OF REMOVAL:

DATE OF REPORT :15386

FINAL FAILURE CONCLUSION:

x

Combustion chamber distress

15.06.07

GBX MODULE

REASON FOR REMOVAL CONFIRMED

Thomas MayerVolker Kardel

2. Picture Report

Note: Information above are subject to change pending further findings, inspection, test and repairs.

The removal reason could be confirmed. During borescope incoming inspection we found a "FOD" noticedon the compressor impeller. APU is a Non PI Version. The Compressor Impeller displayed impact marks onthe leading edge. The nozzle guide vanes showed burnt and cracked trailing edges.The combustionchamber showed heavy damaged heatshiels and thermal cracks .The combustor housing inner seal brokenand fuel nozzles showes damages and have to be repaired. Nearly all seal segments and the forward sealplate revealed wear. Nearly all Fuel Nozzles revealed wear marks.

x

Cover Sheet Page 1

REVISION N°

Shipping Container is a: Wood Box X Cardboard Box LHT Steel Container Shipping Container damage: X No Yes* Customer informed APU external damage: No X Yes* Customer informed Position 6°° Bracket bent: No X Yes* Customer informed Bracket proper mounted No* X Yes Customer informed Combustor Housing cracked: No X Yes* Customer informed Oil Cooler contaminated: No Yes* Matrix dented Blocked Engine Rotation: Smooth X Rough Seized Oil Condition: X Normal No-oil Contaminated*** Burnt Oil Filter Condition: X Normal Chips**** Filter removed**** Light Fuel Filter Contamination: None X Light Moderate Heavy Generator installed: X No Yes Inlet Path inspected: No findings X Findings Engine Mount inspected: X No findings Findings Customer informed Starter Clutch defective: X No Yes***** Customer informed Igniter unit damaged: X No Yes Connector Box Fuel manifold seals leaking: X No Yes Not visible Muff bent, cracked: No X Yes Not visible Tubes chafed: X No Yes Harness damaged: X No findings Findings Connector damaged Cable

* Take picture, inform customer support, inform Product engineering** Trace missing parts on Missing Parts List (MPL), inform Customer Support*** Perform Oil analysis, inform customer support**** Check metal chip origin, check generator history, inform Product engineering and customer support***** Check for proper installation, inform Product engineering, take picture

None EMU Starter FCU Fire warning

S.Clutch Cooling Fan LOP Switch TP Sensor X See table above**

Add missing Parts + Partnumber

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

FINDINGS UPON ARRIVAL:

THE FOLLOWING EXTERNAL HARDWARE WAS MISSING:

Generator is not installedOil Cooler ist not installedCooling Air Duct Assembly is not installed; see Missing Part List

APS 2000 Shop Findings ReportEVENT N° 1379 685265

Technical Data Page 2

REVISION N°

APU borescoped x Yes No Compressor Impeller Normal x Damaged Soft FOD x Hard FOD Inlet Muff Normal x Damaged DOD Hard FOD Combustion Chamber Normal x Damaged NGV Normal x Damaged Compressor Turbine Wheel Normal x Damaged

x APU was not pre-tested due to major internal damage.APU was not pre-tested due to major external damage.APU was not pre-tested due to metal chips on MCD / contamination in oil.APU was pre-tested. Results are within acceptable manual specifications.APU was pre-tested. The following results exeed allowable specifications:

EGT Margin EGTGearbox vibrations Functional Surge CheckPower Section vibrations Oil ConsumptionECS-Mode Rundown time

Remove, inspect, and repair applicable Line Replaceable Units as necessary.Remove, inspect, and repair applicable Line Replaceable Units per customer work scope.

x Remove, inspect, and repair Gearbox as necessary.Remove, inspect, and full refurbish Gearbox as necessary.Remove, inspect, and repair Compressor Section as necessary.

x Remove, inspect, and full refurbish Compressor Section as necessary.Remove, inspect, and repair Turbine Section as necessary.

x Remove, inspect, and full refurbish Turbine Section as necessary.Repair APU as necessary.Perform modifications in accordance with LHT Engineering baseline.Perform ATP Run in accordance with HSPS EM 170101-106:SeriesPerform all necessary AD-Notes.Perform necessary preservation for long time storage.

Findings / Workscope: Last Shop Visit: Revision N°: Aircraft Customer Removal Reason TSN / TSR:

APS 2000 Shop Findings ReportEVENT N° 1379 685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

BORESCOPE FINDINGS:

INCOMING FUNCTIONAL TEST RESULTS:

PERFORMED WORKSCOPE:

APU HISTORY:

First shop visit at Lufthansa Technik

Technical Data Page 3

REVISION N°

LUBE JET WEAR: YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWCLUSTER BUSHING YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWGEAR THEETH DAMAGE: YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWHOUSING CRACKED:DAMAGED: YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWBEARINGS WORN: YES NO x REINSTALLED x OVERHAU SCRAPPED & REPLACED BY NEWOIL PUMP SEIZED: YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWCHIPS IN SYSTEM: YES NO x CLEANED

LIP`SEAL DAMAGED: YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW x

BALL BEARING DAMAGED YES x NO REINSTALLED OVERHAU SCRAPPED & REPLACED BY NEW x

CARBON SEAL DAMAGED YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW x

COMPR: IMPELLER DAMAGED YES x NO REINSTALLED REPAIRED x SCRAPPED & REPLACED BY NEWINTAKE HOUSING DAMAGED YES x NO REINSTALLED REPAIRED x SCRAPPED & REPLACED BY NEWDIFFUSER DAMAGED YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW x

QUILL SHAFT DAMAGED: YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWMUFF ASSY DAMAGED YES x NO REINSTALLED REP/MOD OLD VERSION / REPL. BY NEW x

ROLL BEARING DAMAGED YES x NO REINSTALLED OVERHAU SCRAPPED & REPLACED BY NEW x

NGV DAMAGED: YES x NO REINSTALLED REPAIRED x SCRAPPED & REPLACED BY NEWTURBINE WHEEL DAMAGED: YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW x

SCREEN DAMAGED: YES x NO REINSTALLED REPAIRED OLD VERSION / REPL. BY NEW x

SEAL PLATE DAMAGED: YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW x

SEAL PLATE SEG. DAMAGED: YES x NO REINSTALLED REPAIRED 80% SCRAPPED & REP. BY NEW x

SOUND ATTENUATOR YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWROTOR COUPLING DAMAGED: YES NO x

COMB.CHAMBER DAMAGED: YES x NO REINSTALLED REPAIRED x SCRAPPED & REPLACED BY NEWCOMB.HOUSING DAMAGED YES x NO REINSTALLED REPAIRED x SCRAPPED & REPLACED BY NEWEXHAU.HOUSING DAMAGED: YES x NO REINSTALLED REPAIRED x SCRAPPED & REPLACED BY NEWTHERMOCOUPLES DAMAGED: YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEW2 x IGNITION CABLE DAMAGED YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW x

START FUEL NOZZLES WORN: YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW xMAIN FUEL NOZZLES WORN: YES x NO REINSTALLED REPAIRED SCRAPPED & REPLACED BY NEW xFUEL MANIFOLD DAMAGED YES NO x REINSTALLED x REPAIRED SCRAPPED & REPLACED BY NEWENGINE HARNESS DAMAGED YES NO x REINSTALLED x TESTED SCRAPPED & REPLACED BY NEW

COMPRESSOR SECTION:

HOT SECTION:

MISCELLANEOUS:

GEARBOX SECTION:

POWER SECTION:

APS 2000 Shop Findings ReportEVENT N° 1379 685265

Technical Data 4

REVISION N°

PICTURE 1

PICTURE 2

685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

FOD - Plastik on inlet screen

Cooling fan screen contaminated

APS 2000 Shop Findings ReportEVENT N° 1379

Picture Report 5

REVISION N°

PICTURE 3

PICTURE 4

APS 2000 Shop Findings ReportEVENT N° 1379 685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

FOD - Compressor impeller

Diffuser vanes shows impacts and inner diameter worn

Picture Report 6

REVISION N°

PICTURE 5

PICTURE 6

APS 2000 Shop Findings ReportEVENT N° 1379 685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

Combuster chamber heat shield heavy broken and outer liner cracked

Turbine wheel blade damaged

Picture Report 7

REVISION N°

PICTURE 7

PICTURE 8

APS 2000 Shop Findings ReportEVENT N° 1379 685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

Air Intake Housing Plasma worn and bearing capsule support flange scratched and worn

Seal plate worn

Picture Report 8

REVISION N°

PICTURE 9

PICTURE 10

685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

Seal plate segments worn ( burned )

Combustion housing inner seal broken

APS 2000 Shop Findings ReportEVENT N° 1379

Picture Report 9

REVISION N°

PICTURE 11

PICTURE 12

APS 2000 Shop Findings ReportEVENT N° 1379 685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

Gearbox housing contaminated

EMU information

Picture Report 10

REVISION N°

PICTURE 13

PICTURE 14

685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

Exhaust housing hole cracked

Bearing support inner surface worn

APS 2000 Shop Findings ReportEVENT N° 1379

Picture Report 11

REVISION N°

PICTURE 14

PICTURE 15

APS 2000 Shop Findings ReportEVENT N° 1379 685265

The information contained herein is proprietary to Lufthansa Technik and shall not be reproduced or disclosed in whole or in part without the expressed written consent of Lufthansa Technik AG.

Muff Cover sreew missing

very dirty air inlet aera ( Air intake / Screen )

Picture Report 12