<< >> NASA ASRS Report 1679792, August 2019

B737 captain reported they refused aircraft after maintenance misapplied an MEL to the left ram air door.

Attributes
ACN	1679792
Time
Date	201908
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

Aircraft had left ram air door placarded with MEL 21-4. On recall after pushback; left air conditioning and pack light illuminated. Returned to gate and ZZZ maintenance signed off logbook allowing warning lights on ground when MEL specifically only allows lights in flight. I refused aircraft.

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Original NASA ASRS Text

Title: B737 Captain reported they refused aircraft after Maintenance misapplied an MEL to the left ram air door.

Narrative: Aircraft had left ram air door placarded with MEL 21-4. On recall after pushback; left air conditioning and pack light illuminated. Returned to gate and ZZZ Maintenance signed off logbook allowing warning lights on ground when MEL specifically only allows lights in flight. I refused aircraft.

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.