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A saab 340 was dispatched with a leaking door seal when pressurized to 5 psi. Flight crew took airplane and maintained cabin pressure below 5 psi. No deferred item was entered to document the worn seal and needed replacement.
| Attributes | |
| ACN | 678926 |
| Time | |
| Date | 200507 |
| 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 | Saab-Scania Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 16 |
| ASRS Report | 678926 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : published procedure non adherence : far non adherence : company policies |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Flight Crew Human Performance Environmental Factor Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
Pilot report. Passenger main door seal squealing. Cleared seal and note surface. Noted some wear/deterioration on seal. Felt it should possibly need replacement. After discussions with supervisor and flight crew; determined that they would make flight due to ability to pressurize aircraft on ground sufficiently high. Pilots had previously pressurized aircraft on inbound to +4.5 psi and found no fault with pressurization system. Maintenance wanted aircraft pressurization verified. Stated in corrective action that aircraft pressurized to 4.5 psi per crew information. Aircraft could not be run-up to verify that high of psid on ground. Pressurization was never the question. The seal was written on return for squeal at 5+ psid.
Original NASA ASRS Text
Title: A SAAB 340 WAS DISPATCHED WITH A LEAKING DOOR SEAL WHEN PRESSURIZED TO 5 PSI. FLT CREW TOOK AIRPLANE AND MAINTAINED CABIN PRESSURE BELOW 5 PSI. NO DEFERRED ITEM WAS ENTERED TO DOCUMENT THE WORN SEAL AND NEEDED REPLACEMENT.
Narrative: PLT RPT. PAX MAIN DOOR SEAL SQUEALING. CLRED SEAL AND NOTE SURFACE. NOTED SOME WEAR/DETERIORATION ON SEAL. FELT IT SHOULD POSSIBLY NEED REPLACEMENT. AFTER DISCUSSIONS WITH SUPVR AND FLT CREW; DETERMINED THAT THEY WOULD MAKE FLT DUE TO ABILITY TO PRESSURIZE ACFT ON GND SUFFICIENTLY HIGH. PLTS HAD PREVIOUSLY PRESSURIZED ACFT ON INBOUND TO +4.5 PSI AND FOUND NO FAULT WITH PRESSURIZATION SYS. MAINT WANTED ACFT PRESSURIZATION VERIFIED. STATED IN CORRECTIVE ACTION THAT ACFT PRESSURIZED TO 4.5 PSI PER CREW INFO. ACFT COULD NOT BE RUN-UP TO VERIFY THAT HIGH OF PSID ON GND. PRESSURIZATION WAS NEVER THE QUESTION. THE SEAL WAS WRITTEN ON RETURN FOR SQUEAL AT 5+ PSID.
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.