# SDR HNAA2024061000489

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2024
- Submitted: June 10, 2024
- Operation: Air carrier
- Aircraft: [N935AE](https://openairdocs.org/aircraft/N935AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500920
- Aircraft time: 42,318 hours, 37,942 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: UNKNOWN
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2024061000489

## Discrepancy

DURING CLIMB WHILE PERFORMING A/I TEST CABIN PRESS RATE JUMPED TO 3200FT/MIN. THEN DURING DESCENT CABIN PRESS RATE SPIKED TO 2000FT/MIN. AT LEVEL FLT CABIN PRESS RATE SPIKED TO -400FT/MIN. DURING ANOTHER DESCENT CABIN PRESS RATE SHOWED CLIMB TO 1000FT/MIN.  R/R'D DIGITAL CONTROLLER PER MM 21-31-01. PERFORMED AUTO PRESSURE OPS CHECK PER MM 21-31-00-700-802-A.

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