# SDR IPXA2020122163648

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2020
- Submitted: December 21, 2020
- Operation: Air carrier
- Aircraft: [N171UP](https://openairdocs.org/aircraft/N171UP), registered now
- Make and model: Airbus A300 F4-622R
- Registry model: [Airbus A300 F4-622R](https://openairdocs.org/model/airbus-a300-f4-622r) (OpenAirDocs)
- Aircraft serial: 0866
- Aircraft time: 18,145 hours, 10,975 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Obstructed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2020122163648

## Discrepancy

INSPECTION TYPE: NA DIVERSION-EMERGENCY DECLARED, NO EQUIP USED.  AC WAS TAKEN OUT OF SERVICE.  IN CLIMBOUT CABIN PRESS ADV INDICATED.  FWD OTFLW FULLY OPEN/AFT FULLY CLOSED.  CAB ALT AT FL330 WAS 8200 & SHOULD HAVE BEEN BELOW 6400'.  ATTEMPTED CLSG FWD OTFLW VALVE IN MANUAL, BUT REMAINED FULLY OPEN.  AUTO SYS 1 FAILED, THEN SYS 2 FAILED.  FOUND INSULATION SUCKED AROUND FWD OUTFLOW SCREEN & SCREEN BENT IN PREVENTING VALVE FROM PROPER OPERATION. SECURED INSULATION & R&R'D OUTFLOW SCREEN.  ACCOMPLISHED ADJ/TEST WRT MM 21-31-00 . OPERATIONS GOOD.

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