A B737-800 was dispatched in non compliance with left integrated drive generator not disconnected after troubleshooting deferred item.

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Attributes
ACN	593425
Time
Date	200309
Day	Wed
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Qualification	technician : airframe technician : powerplant
ASRS Report	593425
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : idg low pressure warning
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : non availability of parts contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : repair
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

I was assigned to troubleshoot #1 idg (integrated drive generator) that was currently on placard. Upon troubleshooting, found pressure switch faulting. Unable to replace pressure switch, thus leaving #1 idg on placard. During troubleshooting procedure, I had an additional mechanic assist me as I was not qualified to perform an engine run. After engine run and troubleshooting, I proceeded to follow mpm per MEL 24-1. During this procedure I had assumed that the idg was re-connected by the mechanic that assisted me on engine run.

Original NASA ASRS Text

Title: A B737-800 WAS DISPATCHED IN NON COMPLIANCE WITH L INTEGRATED DRIVE GENERATOR NOT DISCONNECTED AFTER TROUBLESHOOTING DEFERRED ITEM.

Narrative: I WAS ASSIGNED TO TROUBLESHOOT #1 IDG (INTEGRATED DRIVE GENERATOR) THAT WAS CURRENTLY ON PLACARD. UPON TROUBLESHOOTING, FOUND PRESSURE SWITCH FAULTING. UNABLE TO REPLACE PRESSURE SWITCH, THUS LEAVING #1 IDG ON PLACARD. DURING TROUBLESHOOTING PROC, I HAD AN ADDITIONAL MECH ASSIST ME AS I WAS NOT QUALIFIED TO PERFORM AN ENG RUN. AFTER ENG RUN AND TROUBLESHOOTING, I PROCEEDED TO FOLLOW MPM PER MEL 24-1. DURING THIS PROC I HAD ASSUMED THAT THE IDG WAS RE-CONNECTED BY THE MECH THAT ASSISTED ME ON ENG RUN.

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.