# SDR AALA20170527008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2017
- Submitted: May 31, 2017
- Operation: Air carrier
- Aircraft: [N501AA](https://openairdocs.org/aircraft/N501AA), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49738
- Aircraft time: 78,484 hours, 41,795 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Seal
- Condition: Ruptured
- Location: Door
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20170527008

## Discrepancy

EMERGENCY DECLARED. EMERGENCY DESCENT INTO DESTINATION DUE TO CABIN PRESSURIZATION WARNING LIGHTS AND ANOMALIES.  OXYGEN MASKS DID NOT DEPLOY. PERFORMED CHECK OF OVER PRESSURE SAFETY VALVES IAW 21-32-07, LEAKAGE TEST IAW 21-00-00-501, NEGATIVE PRESSURE RELIEF VALVE DOOR TEST, BITE CHECK OF PRESSURE CONTROLLER IAW 21-32-00.  NO FAULTS NOTED.  DURING DECAY CHECK, FOUND FORWARD DOOR HAS HOLE IN SEAL AT UPPER FORWARD CORNER OF DOOR .  REPAIRED DOOR SEAL RUPTURE IAW SRM 52-04-00.  OPERATIONAL CHECKED GOOD.  AIRCRAFT WAS GROUNDED.

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