Air carrier maintenance mechanic reported issuing an incorrect MEL to aircraft.

Attributes
ACN	1677931
Time
Date	201908
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Fuel System
Person 1
Function	Other / Unknown
Qualification	Maintenance Airframe Maintenance Powerplant
Experience	Maintenance Inspector 3 Maintenance Technician 24
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

I received a call for an MEL regarding a 'fuel heat on' annunciation. The mechanic was trying to reset an indication that came on at the gate as reported by the crew. I thought what was being described was an indication issue and suggested the fuel heat annunciation MEL which did not require dispatch. Upon reviewing the log entry on my screen I called to see if the mechanic had verified that the valve was operating because the MEL would have to be changed and the valve wired closed if the valve inoperative. The MEL has no 'M' (maintenance) procedures for checking this only 'O' (operational) procedures for alternate temperature indicating. The aircraft was later released for flight and suffered a diversion and in flight shut down due to high oil temperature.

Original NASA ASRS Text

Title: Air carrier Maintenance Mechanic reported issuing an incorrect MEL to aircraft.

Narrative: I received a call for an MEL regarding a 'fuel heat on' annunciation. The Mechanic was trying to reset an indication that came on at the gate as reported by the crew. I thought what was being described was an indication issue and suggested the fuel heat annunciation MEL which did not require Dispatch. Upon reviewing the log entry on my screen I called to see if the Mechanic had verified that the valve was operating because the MEL would have to be changed and the valve wired closed if the valve inoperative. The MEL has no 'M' (Maintenance) procedures for checking this only 'O' (Operational) procedures for alternate temperature indicating. The aircraft was later released for flight and suffered a diversion and in flight shut down due to high oil temperature.

Data retrieved from NASA's ASRS site 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.