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B737 captain reported that maintenance did not comply with MEL procedures resulting in fuel tank quantity gauge reading errors.
| Attributes | |
| ACN | 1691456 |
| Time | |
| Date | 201910 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Fuel Quantity-Pressure Indication |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 287 Flight Crew Type 6000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance Inflight Event / Encounter Fuel Issue |
Narrative:
Our aircraft arrived from ZZZ with an MEL for the #2 fuel tank quantity gauge reading 530 lbs. Low. We read through the MEL to verify which procedures we would be required to complete; mainly the dipstick of the #2 tank to verify fuel quantity. I took for granted that the other procedures required were completed correctly by maintenance. I didn't even realize that it was contract maintenance in ZZZ that completed the procedures for the MEL. Maintenance in ZZZ disconnected the center fuel tank gauge in error; instead of the #2 fuel tank gauge; as required by the MEL. We observed no reading at the center tank gauge and incorrectly assumed that there was no fuel in the center tank. On our second leg from ZZZ to ZZZ1; we realized that the center tank should at least read a zero and not blank and decided to have maintenance meet us in ZZZ1 to correct the problem.
Original NASA ASRS Text
Title: B737 Captain reported that maintenance did not comply with MEL procedures resulting in fuel tank quantity gauge reading errors.
Narrative: Our aircraft arrived from ZZZ with an MEL for the #2 fuel tank quantity gauge reading 530 lbs. low. We read through the MEL to verify which procedures we would be required to complete; mainly the dipstick of the #2 tank to verify fuel quantity. I took for granted that the other procedures required were completed correctly by Maintenance. I didn't even realize that it was Contract Maintenance in ZZZ that completed the procedures for the MEL. Maintenance in ZZZ disconnected the center fuel tank gauge in error; instead of the #2 fuel tank gauge; as required by the MEL. We observed no reading at the center tank gauge and incorrectly assumed that there was no fuel in the center tank. On our second leg from ZZZ to ZZZ1; we realized that the center tank should at least read a zero and not blank and decided to have Maintenance meet us in ZZZ1 to correct the problem.
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.