# SDR IPXA2021081972919

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2021
- Submitted: August 19, 2021
- Operation: Air carrier
- Aircraft: [N413UP](https://openairdocs.org/aircraft/N413UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23853
- Aircraft time: 34,683 hours, 23,548 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: DE
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2021081972919

## Discrepancy

EMERGENCY DECLARED, IN MANUAL MODE (R) PACK ON (R) ENG BLEED OFF ! TURNED ON (L) PACK AND TURNER OFF (R) PACK. PRESSURIZATION REGAINEDPERFORMED BITE TEST ON BOTH AUTO PRESS CONTROLLERS. NO HARD FAULTS FOUND PER AMM 21-31-02

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