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A B737-400 was dispatched in non compliance with the left fuel quantity indicator deferred inoperative per the MEL but special MEL procedures were not accomplished.
| Attributes | |
| ACN | 442277 |
| Time | |
| Date | 199907 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 33 |
| ASRS Report | 442277 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| Qualification | technician : powerplant technician : airframe |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : fuel qty indicator other other : 971 |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On jul/xa/99 I performed aircraft maintenance on air carrier aircraft xhz. The pilot stated 1 digit of the left fuel quantity gauge was unreadable. The part required to fix the problem was not in stock, requiring the aircraft to be released under chapter 28 of air carrier MEL. I was authority/authorized to accomplish this by the maintenance control foreman. I placarded the logbook and left quantity indicator but failed to accomplish the special procedure for this specific MEL. 1) placard VNAV function of MCP. 2) placard FMC. 3) remove connector from summation unit. I was made aware of my failure to comply with this special procedure by another technician after he discovered the special procedure was not accomplished the next day, he completed the special procedure. It may help to list in larger bold print special procedures required on the MEL page.
Original NASA ASRS Text
Title: A B737-400 WAS DISPATCHED IN NON COMPLIANCE WITH THE L FUEL QUANTITY INDICATOR DEFERRED INOP PER THE MEL BUT SPECIAL MEL PROCS WERE NOT ACCOMPLISHED.
Narrative: ON JUL/XA/99 I PERFORMED ACFT MAINT ON ACR ACFT XHZ. THE PLT STATED 1 DIGIT OF THE L FUEL QUANTITY GAUGE WAS UNREADABLE. THE PART REQUIRED TO FIX THE PROB WAS NOT IN STOCK, REQUIRING THE ACFT TO BE RELEASED UNDER CHAPTER 28 OF ACR MEL. I WAS AUTH TO ACCOMPLISH THIS BY THE MAINT CTL FOREMAN. I PLACARDED THE LOGBOOK AND L QUANTITY INDICATOR BUT FAILED TO ACCOMPLISH THE SPECIAL PROC FOR THIS SPECIFIC MEL. 1) PLACARD VNAV FUNCTION OF MCP. 2) PLACARD FMC. 3) REMOVE CONNECTOR FROM SUMMATION UNIT. I WAS MADE AWARE OF MY FAILURE TO COMPLY WITH THIS SPECIAL PROC BY ANOTHER TECHNICIAN AFTER HE DISCOVERED THE SPECIAL PROC WAS NOT ACCOMPLISHED THE NEXT DAY, HE COMPLETED THE SPECIAL PROC. IT MAY HELP TO LIST IN LARGER BOLD PRINT SPECIAL PROCS REQUIRED ON THE MEL PAGE.
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.