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A B757-200 was dispatched in non compliance with the incorrect circuit breaker pulled and collared in conflict with the MEL.
| Attributes | |
| ACN | 583896 |
| Time | |
| Date | 200306 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 583896 |
| Person 2 | |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : company policies non adherence : far non adherence : published procedure |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
While placarding the tmc system inoperative per MEL 22-06, I reviewed mpm (maintenance procedure manual) 22-06 and pulled and collared circuit breaker F16, tmc (autothrottle system) servo circuit breaker. Upon a later review of mpm 22-06 (large lettering at top of page), I did not see that this mpm was for 22-06G only. 22-06G is indicated in small lettering lower on the same page.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE WITH THE INCORRECT CIRCUIT BREAKER PULLED AND COLLARED IN CONFLICT WITH THE MEL.
Narrative: WHILE PLACARDING THE TMC SYS INOP PER MEL 22-06, I REVIEWED MPM (MAINT PROC MANUAL) 22-06 AND PULLED AND COLLARED CIRCUIT BREAKER F16, TMC (AUTOTHROTTLE SYS) SERVO CIRCUIT BREAKER. UPON A LATER REVIEW OF MPM 22-06 (LARGE LETTERING AT TOP OF PAGE), I DID NOT SEE THAT THIS MPM WAS FOR 22-06G ONLY. 22-06G IS INDICATED IN SMALL LETTERING LOWER ON THE SAME 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.