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A B737-200 was dispatched in non compliance with a deferred item center tank fuel quantity indicator inoperative with status of indicator modifications unknown.
| Attributes | |
| ACN | 439939 |
| Time | |
| Date | 199906 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzv.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| 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 |
| ASRS Report | 439939 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Chart Or Publication Company |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Minium Equipment List |
Narrative:
For center tank underwing indicator deferral you need to verify that certain change order auths are completed/not completed. I believe that the MEL is very unclr on the matter and should state how to verify the change order auths have/have not been completed. The format in the computer I used apparently was not the proper format, thus the deferral was not legal. This was discovered by line maintenance a full day later. Actions were taken at 2 different stations to fix problem. I believe that future problems could be avoided if the MEL stated where to look for completion of change order auths.
Original NASA ASRS Text
Title: A B737-200 WAS DISPATCHED IN NON COMPLIANCE WITH A DEFERRED ITEM CTR TANK FUEL QUANTITY INDICATOR INOP WITH STATUS OF INDICATOR MODIFICATIONS UNKNOWN.
Narrative: FOR CTR TANK UNDERWING INDICATOR DEFERRAL YOU NEED TO VERIFY THAT CERTAIN CHANGE ORDER AUTHS ARE COMPLETED/NOT COMPLETED. I BELIEVE THAT THE MEL IS VERY UNCLR ON THE MATTER AND SHOULD STATE HOW TO VERIFY THE CHANGE ORDER AUTHS HAVE/HAVE NOT BEEN COMPLETED. THE FORMAT IN THE COMPUTER I USED APPARENTLY WAS NOT THE PROPER FORMAT, THUS THE DEFERRAL WAS NOT LEGAL. THIS WAS DISCOVERED BY LINE MAINT A FULL DAY LATER. ACTIONS WERE TAKEN AT 2 DIFFERENT STATIONS TO FIX PROB. I BELIEVE THAT FUTURE PROBS COULD BE AVOIDED IF THE MEL STATED WHERE TO LOOK FOR COMPLETION OF CHANGE ORDER AUTHS.
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.