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A B757-200 flight crew was informed after block in that the aircraft was missing an APU part not installed during the previous day APU change. Crew believes they may have flown an un-airworthy aircraft.
| Attributes | |
| ACN | 769394 |
| Time | |
| Date | 200801 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Weather Elements | Rain |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain observation : company check pilot |
| Experience | flight time last 90 days : 200 flight time total : 24000 flight time type : 7000 |
| ASRS Report | 769394 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 100 flight time total : 8000 flight time type : 630 |
| ASRS Report | 769118 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : briefing performance deficiency : inspection performance deficiency : installation performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
After landing we were told of an outbound delay for maintenance. The maintenance was to install an APU part that was omitted when the APU was installed. We had flown in an apparently unairworthy condition. We had no knowledge of the missing component and successfully utilized the APU for departure and arrival. Perhaps our maintenance procedures need to be reviewed. Callback conversation with reporter revealed the following information: reporter stated he understood the missing part was an APU fluid drain line. The maintenance time needed for installing the missing part was very short.
Original NASA ASRS Text
Title: A B757-200 FLIGHT CREW WAS INFORMED AFTER BLOCK IN THAT THE ACFT WAS MISSING AN APU PART NOT INSTALLED DURING THE PREVIOUS DAY APU CHANGE. CREW BELIEVES THEY MAY HAVE FLOWN AN UN-AIRWORTHY ACFT.
Narrative: AFTER LNDG WE WERE TOLD OF AN OUTBOUND DELAY FOR MAINT. THE MAINT WAS TO INSTALL AN APU PART THAT WAS OMITTED WHEN THE APU WAS INSTALLED. WE HAD FLOWN IN AN APPARENTLY UNAIRWORTHY CONDITION. WE HAD NO KNOWLEDGE OF THE MISSING COMPONENT AND SUCCESSFULLY UTILIZED THE APU FOR DEP AND ARR. PERHAPS OUR MAINT PROCS NEED TO BE REVIEWED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: REPORTER STATED HE UNDERSTOOD THE MISSING PART WAS AN APU FLUID DRAIN LINE. THE MAINT TIME NEEDED FOR INSTALLING THE MISSING PART WAS VERY SHORT.
Data retrieved from NASA's ASRS site as of May 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.