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An md-83 aircraft circuit breakers for the GPWS F20 and G20 on the 'east' panel were mistakenly pulled and collared. Maintenance control notified approximately one hour into flight.
| Attributes | |
| ACN | 742754 |
| Time | |
| Date | 200706 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 742754 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Maintenance control called and asked me to reissue (open) 2 MEL's on aircraft X that had been closed in error in MEL xx-1 and MEL yy-1. In applying the MEL's I thought that I should make sure that there were no special procedures that needed to be applied. I looked in the MEL book and mistakenly thought that the special procedures for MEL xx-2 were for MEL xx-1. I pulled and collared the circuit breakers for GPWS F20 and G20 on the east panel. About an hour into the flight I rechked the MEL book (intuition) and realized that I had pulled circuit breakers and they shouldn't have been. I immediately called maintenance control and informed them of my mistake.
Original NASA ASRS Text
Title: AN MD-83 ACFT CIRCUIT BREAKERS FOR THE GPWS F20 AND G20 ON THE 'E' PANEL WERE MISTAKENLY PULLED AND COLLARED. MAINT CONTROL NOTIFIED APPROX ONE HOUR INTO FLT.
Narrative: MAINT CTL CALLED AND ASKED ME TO REISSUE (OPEN) 2 MEL'S ON ACFT X THAT HAD BEEN CLOSED IN ERROR IN MEL XX-1 AND MEL YY-1. IN APPLYING THE MEL'S I THOUGHT THAT I SHOULD MAKE SURE THAT THERE WERE NO SPECIAL PROCS THAT NEEDED TO BE APPLIED. I LOOKED IN THE MEL BOOK AND MISTAKENLY THOUGHT THAT THE SPECIAL PROCS FOR MEL XX-2 WERE FOR MEL XX-1. I PULLED AND COLLARED THE CIRCUIT BREAKERS FOR GPWS F20 AND G20 ON THE E PANEL. ABOUT AN HR INTO THE FLT I RECHKED THE MEL BOOK (INTUITION) AND REALIZED THAT I HAD PULLED CIRCUIT BREAKERS AND THEY SHOULDN'T HAVE BEEN. I IMMEDIATELY CALLED MAINT CTL AND INFORMED THEM OF MY MISTAKE.
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.