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B737-700 was dispatched with 'B' autoplt inoperative and deferred per the MEL. Aircraft was not downgraded to CAT ii status.
| Attributes | |
| ACN | 640639 |
| Time | |
| Date | 200412 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| 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 | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 640639 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other oversight : coordinator |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : fcc quick test other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : testing performance deficiency : installation performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was given a call to meet aircraft about 'B' system autoplt on deferral -- #2 FCC was removed from another aircraft and installed in aircraft in #2 position and problem followed to aircraft. Maintenance control requested removal and replacement of #2 FCC. Replaced #2 FCC per maintenance manual. On installation, the quick test failed due to interface problem. Called maintenance control, passed information on to them, and signed off removal and replacement on FCC in log page of deferred maintenance item with aircraft remaining on MEL for 'B' autoplt inoperative. Mistaken in thinking that system already downgraded due to MEL. Did not re-certify to CAT IIIA.
Original NASA ASRS Text
Title: B737-700 WAS DISPATCHED WITH 'B' AUTOPLT INOP AND DEFERRED PER THE MEL. ACFT WAS NOT DOWNGRADED TO CAT II STATUS.
Narrative: I WAS GIVEN A CALL TO MEET ACFT ABOUT 'B' SYS AUTOPLT ON DEFERRAL -- #2 FCC WAS REMOVED FROM ANOTHER ACFT AND INSTALLED IN ACFT IN #2 POS AND PROB FOLLOWED TO ACFT. MAINT CTL REQUESTED REMOVAL AND REPLACEMENT OF #2 FCC. REPLACED #2 FCC PER MAINT MANUAL. ON INSTALLATION, THE QUICK TEST FAILED DUE TO INTERFACE PROB. CALLED MAINT CTL, PASSED INFO ON TO THEM, AND SIGNED OFF REMOVAL AND REPLACEMENT ON FCC IN LOG PAGE OF DEFERRED MAINT ITEM WITH ACFT REMAINING ON MEL FOR 'B' AUTOPLT INOP. MISTAKEN IN THINKING THAT SYS ALREADY DOWNGRADED DUE TO MEL. DID NOT RE-CERTIFY TO CAT IIIA.
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.