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A B737-700 was dispatched in non compliance with the global positioning multi-mode receiver not installed. Removed for troubleshooting.
| Attributes | |
| ACN | 599502 |
| Time | |
| Date | 200311 |
| Day | Tue |
| 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 | B737-700 |
| 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 | 599502 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : briefing contributing factor : schedule pressure performance deficiency : installation performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
On nov/tue/03, at XA00, myself and another mechanic were troubleshooting an MEL for 'no raw data on GPS.' after replacing antenna with no help to problem, I removed the #2 multi-mode receiver to facilitate coax cable check-out. At XC00 we determined that to be the cause and were told by our lead to continue it or MEL and got the airplane to the gate for it's XD00 flight. Myself and other mechanic hustled to make this happen. We split duties, one closing up e-bay and other signing logbook, in a hurried state we made this happen. In the process the multi-made receiver was left on shelf, not installed. Pilot reported no antenna functions in flight where this was found. My failure to complete a CAT IIIA recertification would have caught this omission before this happened. Being a CAT IIIA certified mechanic, I should have remembered that the multi-mode receiver is CAT IIIA sensitive. Had I taken the time to perform this 30 min process, the problem would have never happened, for which I apologize.
Original NASA ASRS Text
Title: A B737-700 WAS DISPATCHED IN NON COMPLIANCE WITH THE GLOBAL POSITIONING MULTI-MODE RECEIVER NOT INSTALLED. REMOVED FOR TROUBLESHOOTING.
Narrative: ON NOV/TUE/03, AT XA00, MYSELF AND ANOTHER MECH WERE TROUBLESHOOTING AN MEL FOR 'NO RAW DATA ON GPS.' AFTER REPLACING ANTENNA WITH NO HELP TO PROB, I REMOVED THE #2 MULTI-MODE RECEIVER TO FACILITATE COAX CABLE CHK-OUT. AT XC00 WE DETERMINED THAT TO BE THE CAUSE AND WERE TOLD BY OUR LEAD TO CONTINUE IT OR MEL AND GOT THE AIRPLANE TO THE GATE FOR IT'S XD00 FLT. MYSELF AND OTHER MECH HUSTLED TO MAKE THIS HAPPEN. WE SPLIT DUTIES, ONE CLOSING UP E-BAY AND OTHER SIGNING LOGBOOK, IN A HURRIED STATE WE MADE THIS HAPPEN. IN THE PROCESS THE MULTI-MADE RECEIVER WAS LEFT ON SHELF, NOT INSTALLED. PLT RPTED NO ANTENNA FUNCTIONS IN FLT WHERE THIS WAS FOUND. MY FAILURE TO COMPLETE A CAT IIIA RECERTIFICATION WOULD HAVE CAUGHT THIS OMISSION BEFORE THIS HAPPENED. BEING A CAT IIIA CERTIFIED MECH, I SHOULD HAVE REMEMBERED THAT THE MULTI-MODE RECEIVER IS CAT IIIA SENSITIVE. HAD I TAKEN THE TIME TO PERFORM THIS 30 MIN PROCESS, THE PROB WOULD HAVE NEVER HAPPENED, FOR WHICH I APOLOGIZE.
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.