# SDR SIMA20250320001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2025
- Submitted: March 21, 2025
- Operation: Air carrier
- Aircraft: [N780AH](https://openairdocs.org/aircraft/N780AH), registered now
- Make and model: Emb ERJ 170-100SU
- Registry model: [EMB ERJ 170-100SU](https://openairdocs.org/model/embraer-erj-170-100su) (OpenAirDocs)
- Aircraft serial: 17000131
- Aircraft time: 37,658 hours, 28,303 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: NR
- 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/SIMA20250320001

## Discrepancy

PRESSURIZATION SYSTEM NEEDS CHECKED. LOST PRESSURIZATION AT FL280. EICAS MESSAGE PRESS AUTO FAULT APPEARED. MAINTAINED PRESSURE AT 10000 FT. EMERGENCY DECLARED. PRESSURIZED A/C IAW AMM 21-31-00. OPS CHECK GOOD T/S IAW FIM 21-31-00-810-806-A, FOUND TO BE TRANSITORY CONDITION OF CPCS CONTROLLER

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