# SDR GRTA20231113001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2023
- Submitted: November 13, 2023
- Operation: Air carrier
- Aircraft: [N591AW](https://openairdocs.org/aircraft/N591AW), registered now
- Make and model: Beech C90A
- Registry model: [Beech C90A](https://openairdocs.org/model/beech-c90a) (OpenAirDocs)
- Aircraft serial: LJ1397
- Aircraft time: 6,552 hours, 5,885 cycles
- System (JASC): [5220 · Emergency Exits](https://openairdocs.org/jasc/5220)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Component: Emer Exit Seal, Beech, NA
- Component part number: 504200131179
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: I
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GRTA20231113001

## Discrepancy

AT 12,000 FT, CLIMBING, WE HEAR A WHISTLE COMING FROM EMERG. EXIT.  WHEN WE CLIMBED TO 14,000 FT OUR CABIN ALT WAS 11,000 AND DELTA P WAS AT RECLINE.  WE STOPPED CLIMBING AND STARTED DOWN TO 10,000.  AFTER FLYING AT 10,000 FOR A SHORT TIME THE MEDICS HEARS A WOOSH OF AIR FROM THE MAIN DOOR AND THE PRESSURE PEGGED AT -7000 AND OURS POPPED HARD.  WE DECLARED AN EMERGENCY AND DESCENDED TO 6000 AND WAS UNABLE TO MAINTAIN PRESSURE (-200 -700). FOUND EMERGENCY EXIT DOOR SEAT DE-TATCHED.  SECURED DOOR SEAL WITH 1300L IAW KING AIR 90 SERIES MM 52-20-03.  FOUND DOOR SEAL INFLATION CONNECTION LEAKED.  SECURED CONNECTION AS REQUIRED IAW KING AIR 90 SERIES MM 52-10-13.  PERFORMED AIRCRAFT RUN UP.  NOTED NO AUDIBLE AIR LEAKS FROM CABIN AND AIRCRAFT PRESSURIZATION OPS CHECK.

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