<< >> NASA ASRS Report 490143, October 2000

A B747-400 was dispatched in non compliance with #2 engine electronic engine control incorrect programming plug installed.

Attributes
ACN	490143
Time
Date	200010
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B747 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	instruction : trainee maintenance : technician
Qualification	technician : powerplant technician : airframe technician : fcc
Experience	maintenance repairman : 13 maintenance technician : 0.1
ASRS Report	490143
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
ASRS Report	490576
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far
Independent Detector	other other : ns
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : lighting contributing factor : schedule pressure performance deficiency : repair performance deficiency : testing performance deficiency : training performance deficiency : inspection performance deficiency : installation performance deficiency : logbook entry
Supplementary
Problem Areas	Chart Or Publication Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On oct/thu/00, XA00, myself and my trainer were assigned to aircraft xyz for engine change preparation on #2 engine. Part of the preparation work involved changing the eec (electronic engine control) programming plug. Keeping in mind I am new to this work (1 1/2 months), I have been with air carrier in a repair shop for 13 years though. An air carrier inspector gave my trainer an eec plug and said that according to the engine data plate, that plug was the correct plug. My trainer gave me the plug and I installed it and signed it off. The aircraft made a static run(south) with the new engine, then went on to make 3 or 4 revenue flts before the pilot squawked it, saying #2 engine needed the throttles advanced more than the others. Air carrier in taipei found the plug I installed was the incorrect plug. The correct plug was installed and the aircraft is still in service.

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Original NASA ASRS Text

Title: A B747-400 WAS DISPATCHED IN NON COMPLIANCE WITH #2 ENG ELECTRONIC ENG CTL INCORRECT PROGRAMMING PLUG INSTALLED.

Narrative: ON OCT/THU/00, XA00, MYSELF AND MY TRAINER WERE ASSIGNED TO ACFT XYZ FOR ENG CHANGE PREPARATION ON #2 ENG. PART OF THE PREPARATION WORK INVOLVED CHANGING THE EEC (ELECTRONIC ENG CTL) PROGRAMMING PLUG. KEEPING IN MIND I AM NEW TO THIS WORK (1 1/2 MONTHS), I HAVE BEEN WITH ACR IN A REPAIR SHOP FOR 13 YEARS THOUGH. AN ACR INSPECTOR GAVE MY TRAINER AN EEC PLUG AND SAID THAT ACCORDING TO THE ENG DATA PLATE, THAT PLUG WAS THE CORRECT PLUG. MY TRAINER GAVE ME THE PLUG AND I INSTALLED IT AND SIGNED IT OFF. THE ACFT MADE A STATIC RUN(S) WITH THE NEW ENG, THEN WENT ON TO MAKE 3 OR 4 REVENUE FLTS BEFORE THE PLT SQUAWKED IT, SAYING #2 ENG NEEDED THE THROTTLES ADVANCED MORE THAN THE OTHERS. ACR IN TAIPEI FOUND THE PLUG I INSTALLED WAS THE INCORRECT PLUG. THE CORRECT PLUG WAS INSTALLED AND THE ACFT IS STILL IN SVC.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.