# SDR HNAA2023052300177

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2023
- Submitted: May 23, 2023
- Operation: Air carrier
- Aircraft: [N643AE](https://openairdocs.org/aircraft/N643AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145200
- Aircraft time: 51,998 hours, 48,163 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2023052300177

## Discrepancy

CABIN ALTITUDE ROSE RAPIDLY AT CRUISE (FLIGHT LEVEL 240) ECEEDED 10000 THEN DURING DECENT IT REACHED AS HIGH AS 12000 CABIN ALTITUDE      HISTORY: NONE FACT  22MAY23  17:39  PHL REMOVED AND REPLACED CABIN PRESSURE ACUISITION MODULE IAW AMM 21-32-01 OPS/ LEAK CHECK GOOD. OK FOR SERVICE MDIS  643     21-31  2778333  22MAY23  PHL  CLOSE       CABIN ALT ROSE RAPIDLY AT CRUISE (FL240). EXCEEDED 10,000 THEN DURING EMERGENCY DESCENT IT REACHED AS HIGH AS 12,200 (CAB ALT). REF SEQ 1 THIS LP. MX ACTION COMPLETE SUBJECT TO SATISFACTORY EVALUATION FLIGHT.

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