A line mechanic deferred a repeat write-up of a B737 #2 slat in-transit light illuminating in-flight...

Attributes
ACN	882826
Time
Date	201003
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Flap/Slat Indication
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Experience	Maintenance Technician 25
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL

Narrative:

March 2010. On a B737 aircraft the #2 slat in-transit light came 'on' in-flight. In performing initial evaluation in accordance with fault isolation manual (fim); flap slat electronics unit (fseu) checked good; no faults noted. Operation of flap/slat indication checked normal. Because of previous write-up of #2 slat; I requested a placard to ensure precautionary awareness of (not failure) of the #2 slat light. After discussion with maintenance control; an MEL item number was given and was acceptable MEL for the item being placarded. A placard was installed after verified operation of slats. A few days later; I was informed that the MEL was not acceptable to B737 fleet.

Original NASA ASRS Text

Title: A Line Mechanic deferred a repeat write-up of a B737 #2 Slat In-Transit light illuminating in-flight. Maintenance Control had approved and accepted the MEL deferral. Mechanic was informed approximately one week later the MEL was not applicable to their B737 fleet.

Narrative: March 2010. On a B737 aircraft the #2 Slat In-Transit light came 'On' in-flight. In performing initial evaluation in accordance with fault isolation manual (FIM); Flap Slat Electronics Unit (FSEU) checked good; no faults noted. Operation of flap/slat indication checked normal. Because of previous write-up of #2 slat; I requested a placard to ensure precautionary awareness of (not failure) of the #2 slat light. After discussion with Maintenance Control; an MEL item number was given and was acceptable MEL for the item being placarded. A placard was installed after verified operation of Slats. A few days later; I was informed that the MEL was not acceptable to B737 fleet.

Data retrieved from NASA's ASRS site as of April 2012 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.

A line mechanic deferred a repeat write-up of a B737 #2 slat in-transit light illuminating in-flight. Maintenance control had approved and accepted the MEL deferral. Mechanic was informed approximately one week later the MEL was not applicable to their B737 fleet.