<< >> NASA ASRS Report 576333, March 2003

A B767-300 was dispatched in non compliance with #2 engine integrated drive generator replaced, but not configured, for a pratt and whitney engine.

Attributes
ACN	576333
Time
Date	200303
Day	Mon
Local Time Of Day	0001 To 0600
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	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : fcc technician : airframe technician : powerplant
Experience	maintenance avionics : 6 maintenance lead technician : 4 maintenance technician : 12
ASRS Report	576333
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Resolutory Action	none taken : detected after the fact
Consequence	other other other
Factors
Maintenance	contributing factor : manuals performance deficiency : testing performance deficiency : installation performance deficiency : inspection performance deficiency : repair
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

The B767 aircraft came into the maintenance sta with the right engine idg inoperative. The idg (integrated drive generator) replacement part was not available by the end of my shift. Subsequently, the idg was installed the next day prior to my shift. My turnover to me and the oncoming crew was that the idg needs chkout during an engine run. The idg was leak checked and operationally checked with no trouble found. The replacement idg item was signed off in the aircraft logbook. All indications were normal during the maintenance run. While checking the computer to see if the idg replacement was a 'good fix,' I saw a logbook entry that the idg was found inoperative again 2 days later. The corrective action was to properly configure the idg shaft for a pratt and whitney engine. Before the idg replacement was originally signed off, there was no indication that anything was improperly installed on the idg. The engine was run for 45 mins.

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Original NASA ASRS Text

Title: A B767-300 WAS DISPATCHED IN NON COMPLIANCE WITH #2 ENG INTEGRATED DRIVE GENERATOR REPLACED, BUT NOT CONFIGURED, FOR A PRATT AND WHITNEY ENG.

Narrative: THE B767 ACFT CAME INTO THE MAINT STA WITH THE R ENG IDG INOP. THE IDG (INTEGRATED DRIVE GENERATOR) REPLACEMENT PART WAS NOT AVAILABLE BY THE END OF MY SHIFT. SUBSEQUENTLY, THE IDG WAS INSTALLED THE NEXT DAY PRIOR TO MY SHIFT. MY TURNOVER TO ME AND THE ONCOMING CREW WAS THAT THE IDG NEEDS CHKOUT DURING AN ENG RUN. THE IDG WAS LEAK CHKED AND OPERATIONALLY CHKED WITH NO TROUBLE FOUND. THE REPLACEMENT IDG ITEM WAS SIGNED OFF IN THE ACFT LOGBOOK. ALL INDICATIONS WERE NORMAL DURING THE MAINT RUN. WHILE CHKING THE COMPUTER TO SEE IF THE IDG REPLACEMENT WAS A 'GOOD FIX,' I SAW A LOGBOOK ENTRY THAT THE IDG WAS FOUND INOP AGAIN 2 DAYS LATER. THE CORRECTIVE ACTION WAS TO PROPERLY CONFIGURE THE IDG SHAFT FOR A PRATT AND WHITNEY ENG. BEFORE THE IDG REPLACEMENT WAS ORIGINALLY SIGNED OFF, THERE WAS NO INDICATION THAT ANYTHING WAS IMPROPERLY INSTALLED ON THE IDG. THE ENG WAS RUN FOR 45 MINS.

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.