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A B757-200 was dispatched after a #2 transponder unit was replaced. Unit was replaced with same part number as removed; incorrect part installed.
| Attributes | |
| ACN | 706208 |
| Time | |
| Date | 200605 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| 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 |
| ASRS Report | 706208 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Was assigned to work aircraft with ATC r-hand transponder. Flight crew maintenance report run had company part #TRX2221. Removed transponders from aircraft. Found it to be a TRX1234. Replaced unit same as off aircraft performed operations per maintenance manual. Later I was informed that TRX1234 was incorrect and that it should have been TRX2221. Correct transponder was installed at another station. In future will pay more attention to ipc effectivity when numerous company part numbers available. There are 3 different xponders for this fleet type.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED AFTER A #2 XPONDER UNIT WAS REPLACED. UNIT WAS REPLACED WITH SAME PART NUMBER AS REMOVED; INCORRECT PART INSTALLED.
Narrative: WAS ASSIGNED TO WORK ACFT WITH ATC R-HAND XPONDER. FLT CREW MAINT RPT RUN HAD COMPANY PART #TRX2221. REMOVED TRANSPONDERS FROM ACFT. FOUND IT TO BE A TRX1234. REPLACED UNIT SAME AS OFF ACFT PERFORMED OPS PER MAINT MANUAL. LATER I WAS INFORMED THAT TRX1234 WAS INCORRECT AND THAT IT SHOULD HAVE BEEN TRX2221. CORRECT XPONDER WAS INSTALLED AT ANOTHER STATION. IN FUTURE WILL PAY MORE ATTN TO IPC EFFECTIVITY WHEN NUMEROUS COMPANY PART NUMBERS AVAILABLE. THERE ARE 3 DIFFERENT XPONDERS FOR THIS FLEET TYPE.
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.