Honeywell’sN1 DEEC Upgrade

N1 Digital Electronic

Engine Control for

the TFE731 turbofan

engine

AEROSPACE

Available for TFE731 engines

Certified Applications:

Citation III Hawker 400 Falcon 10Citation VI Hawker 700 Falcon 20-5BCitation VII Hawker 800 Falcon 50

Hawker 800XP Falcon 900B/900C(Includes all other731-3 powered aircraft.)

Certified Applications:

Astra Westwind Lear 31Lear 35Lear 36

Upgrade your TFE731 engineswith N1 Digital Electronic Engine Controls

• Eliminates control trimming

• Eliminates high power run-ups after control change out which reducesfuel usage for ground runs

• Provides repeatable, predictable engine performance

• Improves control reliability

• Weighs less

• Features drop-in compatibility

Want the very best reliability, engineoperating control and monitoring for your TFE731-powered aircraft?And a way to reduce engine wearand maintenance?

Eliminating the need for electroniccontrol trimming—and almost like giv-ing your engines a permanent, solid-state tune-up, Honeywell’s N1 DigitalElectronic Engine Controls (N1 DEEC)improve TFE731 power managementand engine temperature limiting.

These new controls can help youreduce engine wear by enhancingexceedance protection and providingtrend monitoring. They provide a hostof benefits for both flight crews andmaintenance personnel.

Two year ROI

On top of all its maintenance andpower management benefits, the N1 DEEC can pay for itself in lessthan two years—even if you fly as little as 400 hours annually.

Consider these benefits:

• Component repair cost savings

• Component weight reductions

• Fuel use reductions due to decreasedground run requirements

• Maintenance labor savings

Improved power management and engine monitoring

The N1 DEEC reduces pilot workloadby providing flight crews with predict-able and repeatable takeoff and climbsettings. The new N1 DEEC preventsfan speed overshoot and rollback ofthe target N1 at takeoff. Anotheradvantage: climb power settingschedules are programmed into theN1 DEEC—reducing the need forpower lever adjustments.

The N1 DEEC accurately holds enginepower settings, eliminating drift.

This new DEEC also helps protectyour engine investment by addingautomatic temperature limiting—withexceedance protection during start,take-off and climb. And, because itmonitors and records engine events,performance and trends, the N1DEEC can help spot problems longbefore they are visible to flight crews.

Built-in manual mode dispatch capa-bility is included—with no additionaltest equipment required.

Reduce maintenance,enhance engine powermanagement and improvecontrol reliability

Saves maintenance time and cost

The time previously needed for electronic control trimming has beeneliminated as well as the high powerrun-ups after control change out.Greater fault isolation has improvedcomponent troubleshooting. The N1 DEEC can help reduce enginewear through its temperature limiting function.

Enhanced engine monitoring

This new DEEC provides EngineCondition Trend Monitoring for performance trending, event recording, fault history and life cycleinformation tracking and includesauto-recording of Jet-Care required data.

Doubled reliability, reduced weight

The N1 DEEC’s solid state designand reduced part count dramaticallyimproves reliability (doubling that ofprevious analog EECs) and reducesweight by as much as 9 lbs. per control.(Shown above is the new N1 DEEC, at left, and the previous model, at right.)

Drop-in replacement

The N1 DEEC is easily installed inthe same location as the existingEEC/DEEC. Falcon 50 and Falcon900 aircraft require minor aircraftmodifications due to DEEC locations.

An optional PC Data Downloadercable can be attached to the J2 test connector for easy access tostored data.

Available through Maintenance Service Plan

For operators enrolled in MSP, analog Electronic Engine Controls(EECs) and digital (N2) DEECs willbe replaced with digital N1 DEECswhen existing controls requireremoval and replacement—or at the next scheduled core zone inspection (CZI). MSP Gold operatorsreceive an N1 DEEC upgrade at thenext scheduled MPI.

PC data downloader

For complete analysis and reportingof engine trends and performance, a laptop PC Data Downloader featureextracts Engine Condition TrendMonitoring (ECTM) data from the N1 DEEC in minutes. Available data for download includes:

• Engine usage statistics

• N1/N2 roll-down trends

• Automatic usage tracking

• Fault history

• Engine exceedance monitoring of N1, N2, and ITT

• Engine event recording from pilotevent switch and automatictriggers.

• Performance trend monitoring

• PLA usage profiles

• N1/N2 spool speed data

• ITT temperature profiles

Enhanced troubleshooting

Improved built-in test logic providesgreater component fault identificationand isolation.

Real-time analysis of N1 DEEC ECTMdata availablethrough e-Engineweb site

The Honeywell e-Engine web siteinterface provides immediate feed-back of engine status based onuploaded ECTM data. AutomaticECTM data file transfer to Jet-Care isalso provided to speed-up trendmonitoring analysis lag time.

www.e-engine.honeywell.com

Other e-Engine functions to support your TFE731 engine and N1 DEECupgrade include:• On-Line training programs and a link to Aerospace Academy courses• Access to your engine trend history• Supplemental Type Certificate (STC) packages for N1 DEEC installation and

engine upgrades• Technical publications specific to your engine model

PA03-3097A

October 2003

Printed in U.S.A. on Recycled Paper

© 2003 Honeywell International Inc.

Engines, Systems & ServicesHoneywell

P.O. Box 52181Phoenix, Arizona 85072-2181

Domestic Tel: 800-601-3099Int’l Tel: 602-365-3099 www.HoneywellAerospace.com