# SDR AALA2019121099006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2019
- Submitted: December 10, 2019
- Operation: Air carrier
- Aircraft: [N766US](https://openairdocs.org/aircraft/N766US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1378
- Aircraft time: 50,799 hours, 32,552 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator Valve
- Part number: 6774E010000
- Part serial: 00878
- Condition: Malfunctioned
- Location: Nr 1 Bleed
- Part time: 56,195 hours, 6,756 cycles
- Stage of operation: DE
- How discovered: V
- Nature of condition: J, S
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019121099006

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS 4000' ON ILS #1 BLEED FAULT WITH A PRESURIZATION SURGE OF + 200'TO -300FT. MAINTENANCE REMOVED AND REPLACED PRV 4001HA IAW AMM 36-11-52-400. OPS AND LEAK CHECK OK.

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