<< >> NASA ASRS Report 482491, August 2000

A B737-300 was dispatched in non compliance with a deferred item on #1 leading edge device position light, per the MEL, but an incorrect relay was removed.

Attributes
ACN	482491
Time
Date	200008
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance lead technician : 4 maintenance technician : 10
ASRS Report	482491
Person 2
Affiliation	company : air carrier
Function	oversight : supervisor
Qualification	technician : airframe technician : powerplant
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : air-ground sensing other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : manuals contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : testing
Supplementary
Problem Areas	Company Maintenance Human Performance Chart Or Publication Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

I was instructed to placard the leading edge device indication due to a possible burned out light bulb at #1 leading edge slat. The only information given to me was a computer printout that instructed me to remove relay R238. I pulled the relay that I thought was R238 and signed the book. Then I received a phone call the next day telling me that the relay that was found removed was R283 not R238. If this is in fact true.

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Original NASA ASRS Text

Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH A DEFERRED ITEM ON #1 LEADING EDGE DEVICE POS LIGHT, PER THE MEL, BUT AN INCORRECT RELAY WAS REMOVED.

Narrative: I WAS INSTRUCTED TO PLACARD THE LEADING EDGE DEVICE INDICATION DUE TO A POSSIBLE BURNED OUT LIGHT BULB AT #1 LEADING EDGE SLAT. THE ONLY INFO GIVEN TO ME WAS A COMPUTER PRINTOUT THAT INSTRUCTED ME TO REMOVE RELAY R238. I PULLED THE RELAY THAT I THOUGHT WAS R238 AND SIGNED THE BOOK. THEN I RECEIVED A PHONE CALL THE NEXT DAY TELLING ME THAT THE RELAY THAT WAS FOUND REMOVED WAS R283 NOT R238. IF THIS IS IN FACT TRUE.

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.