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A B737-300 was dispatched in non compliance with the left angle of attack sensor damaged and unusable in conflict with the MEL requirement.
| Attributes | |
| ACN | 527414 |
| Time | |
| Date | 200110 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked ground : preflight |
| Person 1 | |
| Affiliation | company : air carrier |
| ASRS Report | 527414 |
| Person 2 | |
| Affiliation | other |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | other other : 983 |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Environmental Factor Company |
| Primary Problem | Company |
Narrative:
Incorrect MEL used. L-hand angle of attack sensor was broken. After inspection by contract maintenance, I deferred the #1 stall warning system using MEL 27-13. I should have deferred the angle of attack sensor using MEL 22-7. I didn't read, closely enough, the maintenance procedure manual's procedure. I overlooked the MEL 22-7. I was probably distraction by overseeing the morning departures while working the angle of attack sensor problem, although that's no excuse. It's still my responsibility to see that things are done correctly.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE L ANGLE OF ATTACK SENSOR DAMAGED AND UNUSABLE IN CONFLICT WITH THE MEL REQUIREMENT.
Narrative: INCORRECT MEL USED. L-HAND ANGLE OF ATTACK SENSOR WAS BROKEN. AFTER INSPECTION BY CONTRACT MAINT, I DEFERRED THE #1 STALL WARNING SYS USING MEL 27-13. I SHOULD HAVE DEFERRED THE ANGLE OF ATTACK SENSOR USING MEL 22-7. I DIDN'T READ, CLOSELY ENOUGH, THE MAINT PROC MANUAL'S PROC. I OVERLOOKED THE MEL 22-7. I WAS PROBABLY DISTR BY OVERSEEING THE MORNING DEPS WHILE WORKING THE ANGLE OF ATTACK SENSOR PROB, ALTHOUGH THAT'S NO EXCUSE. IT'S STILL MY RESPONSIBILITY TO SEE THAT THINGS ARE DONE CORRECTLY.
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.