# SDR J7SA2019022204001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2019
- Submitted: February 22, 2019
- Operation: Air carrier
- Aircraft: N401FX
- Make and model: Emb EMB-550
- Registry model: [EMB EMB-550](https://openairdocs.org/model/embraer-emb-550) (OpenAirDocs)
- Aircraft serial: 55000027
- Aircraft time: 2,905 hours, 1,895 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/J7SA2019022204001

## Discrepancy

AIR TURN BACK DUE TO AIRCRAFT NOT PRESSURIZING IN THE CLIMB. CAS MESSAGES FOR "BLEED 1 AND 2 OFF", "PAC OFF", AND "DOOR PAX SEAL FAIL". AIRCRAFT PRESSURIZED ON APPORACH AND AIRCRAFT LANDED WITHOUT INCIENT. PERFORMED FIM TASK 21-00-00-810-801-A WITH NO FAULTS FOUND AND IS CONSIDERED A TRANSITORY CONDITION OF THE AIR CONDITIONING CONTROLLER. REMOVED AND REPLACED AIR CONDITIONING / PNEUMATIC PANEL. PERFORMED COOLING PACK SYSTEM OPS TEST AND PNEUMATIC SYSTEM OPS TEST WITH NO DEFECTS NOTED.

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