# SDR 21GA20220416001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2022
- Submitted: April 18, 2022
- Operation: Air carrier
- Aircraft: [N999YV](https://openairdocs.org/aircraft/N999YV), registered now
- Make and model: Boeing 767241
- Aircraft serial: 23801
- Aircraft time: 101,362 hours, 36,887 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: None
- Condition: None
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A, B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/21GA20220416001

## Discrepancy

DURING CRUISE, CABIN ALTITUDE AUTO 2 STATUS MESSAGE. ZERO DUCT PRESSURE FROM ENGINE OR APU BLEEDS. PERFORMED EMERGENCY DECENT DUE TO LOSS OF CABIN PRESSURE. MAINTENANCE PERSONNEL PERFORMED A CABIN PRESSURE CONTROL SYSTEM TEST PER AMM. NO FAULTS NOTED. PERFORMED ENGINE RUN AND FOUND ENGINE AND APU DUCT PRESSURE TO BE SATISFACTORY.

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