# SDR 2019F00028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2018
- Submitted: July 16, 2018
- Operation: General aviation
- Make and model: Boeing 737-33A
- Registry model: [Boeing 737-33A](https://openairdocs.org/model/boeing-737-33a) (OpenAirDocs)
- Aircraft serial: 27458
- 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: J
- Precautionary procedure: G, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2019F00028

## Discrepancy

AFTER TAKEOFF WITH BLEEDS IN AUTO, PASSING FL200 MASTER CAUTION AND PASS OXY ON LIGHT ILLUMINATED, ALL OXYGEN MASKS DROPS. THEN RECYCLING BOTH PACKS THE AIRCRAFT PRESURIZED AGAIN.

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