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A B737-700 was dispatched in non compliance with the incorrect onboard performance computer inadvertently installed.
| Attributes | |
| ACN | 570347 |
| Time | |
| Date | 200301 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| 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 | 570347 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance 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 : schedule pressure performance deficiency : training performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | Maint Bulletin |
Narrative:
Aircraft on repos ferry from ZZZ1 called in to ZZZ maintenance prior to arrival reporting their onboard performance computer was locked up and would not even turn off. I was asked to marshal the aircraft upon arrival and right&right the onboard performance computer. I took off the onboard performance computer charger what I thought was the only part number of onboard performance computer we stocked and installed it on the aircraft (after having updated the onboard performance computer with current software). It was brought to my attention this morning (jan/tue/03) that the wrong onboard performance computer was installed. I was unaware that there were more than 1 part number of onboard performance computers. I asked a couple other mechanics if they knew there was another style onboard performance computer for a -700 and they replied 'no.' if I was aware of the multiple part numbers of onboard performance computers that we carry. I would have check mpd 5.
Original NASA ASRS Text
Title: A B737-700 WAS DISPATCHED IN NON COMPLIANCE WITH THE INCORRECT ONBOARD PERFORMANCE COMPUTER INADVERTENTLY INSTALLED.
Narrative: ACFT ON REPOS FERRY FROM ZZZ1 CALLED IN TO ZZZ MAINT PRIOR TO ARR RPTING THEIR ONBOARD PERFORMANCE COMPUTER WAS LOCKED UP AND WOULD NOT EVEN TURN OFF. I WAS ASKED TO MARSHAL THE ACFT UPON ARR AND R&R THE ONBOARD PERFORMANCE COMPUTER. I TOOK OFF THE ONBOARD PERFORMANCE COMPUTER CHARGER WHAT I THOUGHT WAS THE ONLY PART NUMBER OF ONBOARD PERFORMANCE COMPUTER WE STOCKED AND INSTALLED IT ON THE ACFT (AFTER HAVING UPDATED THE ONBOARD PERFORMANCE COMPUTER WITH CURRENT SOFTWARE). IT WAS BROUGHT TO MY ATTN THIS MORNING (JAN/TUE/03) THAT THE WRONG ONBOARD PERFORMANCE COMPUTER WAS INSTALLED. I WAS UNAWARE THAT THERE WERE MORE THAN 1 PART NUMBER OF ONBOARD PERFORMANCE COMPUTERS. I ASKED A COUPLE OTHER MECHS IF THEY KNEW THERE WAS ANOTHER STYLE ONBOARD PERFORMANCE COMPUTER FOR A -700 AND THEY REPLIED 'NO.' IF I WAS AWARE OF THE MULTIPLE PART NUMBERS OF ONBOARD PERFORMANCE COMPUTERS THAT WE CARRY. I WOULD HAVE CHK MPD 5.
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.