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A CRJ700 released from heavy maintenance a technician performed post engine runs and pressurization tests; all items signed off as ok. Aircraft on first flight returns with pressurization problem maintenance found aft cargo door seal installed incorrectly.
| Attributes | |
| ACN | 710454 |
| Time | |
| Date | 200609 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 710454 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : inspection performance deficiency : testing performance deficiency : installation performance deficiency : scheduled maintenance performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft returned to ZZZ after repeat pilot reports of automatic pressurization fail in flight. Aircraft had been released from heavy check where I had performed the post engine runs in accordance with applicable maintenance manuals and work cards as required. I performed a manual pressurization check in accordance with the maintenance manual with no failure or leak. I then signed all pertaining non routine work card and maintenance work cards off as applicable. Upon returning we found that the aft cargo door seal was incorrectly installed. We fixed the seal; flew functional check flight and returned aircraft to service.
Original NASA ASRS Text
Title: A CRJ700 RELEASED FROM HVY MAINT A TECHNICIAN PERFORMED POST ENG RUNS AND PRESSURIZATION TESTS; ALL ITEMS SIGNED OFF AS OK. ACFT ON FIRST FLT RETURNS WITH PRESSURIZATION PROB MAINT FOUND AFT CARGO DOOR SEAL INSTALLED INCORRECTLY.
Narrative: ACFT RETURNED TO ZZZ AFTER REPEAT PLT RPTS OF AUTO PRESSURIZATION FAIL IN FLT. ACFT HAD BEEN RELEASED FROM HVY CHK WHERE I HAD PERFORMED THE POST ENG RUNS IN ACCORDANCE WITH APPLICABLE MAINT MANUALS AND WORK CARDS AS REQUIRED. I PERFORMED A MANUAL PRESSURIZATION CHK IN ACCORDANCE WITH THE MAINT MANUAL WITH NO FAILURE OR LEAK. I THEN SIGNED ALL PERTAINING NON ROUTINE WORK CARD AND MAINT WORK CARDS OFF AS APPLICABLE. UPON RETURNING WE FOUND THAT THE AFT CARGO DOOR SEAL WAS INCORRECTLY INSTALLED. WE FIXED THE SEAL; FLEW FUNCTIONAL CHK FLT AND RETURNED ACFT TO SVC.
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.