<< >> NASA ASRS Report 455455, November 1999

A B757-200 was dispatched in non compliance with an emergency cabin light deferred as inoperative, but the incorrect MEL item number entered in the logbook.

Attributes
ACN	455455
Time
Date	199911
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Experience	maintenance technician : 16
ASRS Report	455455
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Events
Anomaly	aircraft equipment problem : critical maintenance problem : non compliance with mel maintenance problem : improper documentation
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On nov/mon/99, I received a call from ZZZ maintenance requesting MEL for emergency light inoperative. I verified the MEL 33-51-1 and discussed the procedure. The mechanic verified adjacent lights were operative and a MEL was issued. I verified the MEL through our master MEL book. We also use another book for issuing MEL's called the MEL control book. In this book MEL's are broken down even further to aide in MEL control. I did verify MEL by master MEL book, but I made a mistake when I went to the MEL control book. The code 33-51-3-4 is described as escape path clear modules. In the control book it does not specify floor or seat. This is where I made my mistake. The light in question was a clear module. Although this item in question was legal as far as the MEL, I did mistakenly issue the wrong MEL item number. The item was cleared on nov/wed/99.

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Original NASA ASRS Text

Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE WITH AN EMER CABIN LIGHT DEFERRED AS INOP, BUT THE INCORRECT MEL ITEM NUMBER ENTERED IN THE LOGBOOK.

Narrative: ON NOV/MON/99, I RECEIVED A CALL FROM ZZZ MAINT REQUESTING MEL FOR EMER LIGHT INOP. I VERIFIED THE MEL 33-51-1 AND DISCUSSED THE PROC. THE MECH VERIFIED ADJACENT LIGHTS WERE OPERATIVE AND A MEL WAS ISSUED. I VERIFIED THE MEL THROUGH OUR MASTER MEL BOOK. WE ALSO USE ANOTHER BOOK FOR ISSUING MEL'S CALLED THE MEL CTL BOOK. IN THIS BOOK MEL'S ARE BROKEN DOWN EVEN FURTHER TO AIDE IN MEL CTL. I DID VERIFY MEL BY MASTER MEL BOOK, BUT I MADE A MISTAKE WHEN I WENT TO THE MEL CTL BOOK. THE CODE 33-51-3-4 IS DESCRIBED AS ESCAPE PATH CLR MODULES. IN THE CTL BOOK IT DOES NOT SPECIFY FLOOR OR SEAT. THIS IS WHERE I MADE MY MISTAKE. THE LIGHT IN QUESTION WAS A CLR MODULE. ALTHOUGH THIS ITEM IN QUESTION WAS LEGAL AS FAR AS THE MEL, I DID MISTAKENLY ISSUE THE WRONG MEL ITEM NUMBER. THE ITEM WAS CLRED ON NOV/WED/99.

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.