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A B767-400 forward cargo door drive harness was damaged. Harness disconnected and deferred per MEL. Found with harness disconnected door warning inoperative in conflict with MEL.
| Attributes | |
| ACN | 649349 |
| Time | |
| Date | 200503 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Controlling Facilities | tower : isp.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767-400 and 400 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician oversight : coordinator |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 649349 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : repair performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance Environmental Factor |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | Minimum Equip List |
Narrative:
The forward cargo door drive harness was damaged. Due to long repair time involved; I advised air carrier maintenance to disconnect harness and inoperative electrical drive per MEL 52-30-01E and dispatch. When aircraft arrived ZZZ1; their maintenance and next shift coordinator discovered that indication for the door was not working per MEL procedure in the maintenance procedures. (This was due to harness disconnect but door was correctly locked.) the aircraft then could not continue its flight day until harness was repaired. These harnesses are damaged quite often due to container loading. My follow-up will be not to allow disconnecting when damaged. Also; boeing should consider an airworthiness directive to reroute; or better -- to protect to avoid shorting or fire.
Original NASA ASRS Text
Title: A B767-400 FORWARD CARGO DOOR DRIVE HARNESS WAS DAMAGED. HARNESS DISCONNECTED AND DEFERRED PER MEL. FOUND WITH HARNESS DISCONNECTED DOOR WARNING INOP IN CONFLICT WITH MEL.
Narrative: THE FORWARD CARGO DOOR DRIVE HARNESS WAS DAMAGED. DUE TO LONG REPAIR TIME INVOLVED; I ADVISED ACR MAINT TO DISCONNECT HARNESS AND INOP ELECTRICAL DRIVE PER MEL 52-30-01E AND DISPATCH. WHEN ACFT ARRIVED ZZZ1; THEIR MAINT AND NEXT SHIFT COORDINATOR DISCOVERED THAT INDICATION FOR THE DOOR WAS NOT WORKING PER MEL PROC IN THE MAINT PROCS. (THIS WAS DUE TO HARNESS DISCONNECT BUT DOOR WAS CORRECTLY LOCKED.) THE ACFT THEN COULD NOT CONTINUE ITS FLT DAY UNTIL HARNESS WAS REPAIRED. THESE HARNESSES ARE DAMAGED QUITE OFTEN DUE TO CONTAINER LOADING. MY FOLLOW-UP WILL BE NOT TO ALLOW DISCONNECTING WHEN DAMAGED. ALSO; BOEING SHOULD CONSIDER AN AIRWORTHINESS DIRECTIVE TO REROUTE; OR BETTER -- TO PROTECT TO AVOID SHORTING OR FIRE.
Data retrieved from NASA's ASRS site as of January 2009 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.