# SDR HALA2014020800016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2014
- Submitted: February 10, 2014
- Operation: Air carrier
- Aircraft: N590HA
- Make and model: Boeing 767-3CB
- Registry model: [Boeing 767-3CB](https://openairdocs.org/model/boeing-767-3cb) (OpenAirDocs)
- Aircraft serial: 33467
- Aircraft time: 44,210 hours, 7,928 cycles
- System (JASC): [3410 · Flight Environment Data](https://openairdocs.org/jasc/3410)
- Part: Valve
- Part number: 77328810
- Part serial: 971036
- Condition: Failed
- Location: Pneumatic Sys
- Part time: 22,780 hours, 3,852 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HALA2014020800016

## Discrepancy

DURING CLIMB AND DESCENT THE LT PNEUMATIC DUCT PRESSURE SURGES 25PSI TO 40 PSI REPEATEDLY.  R & R AIR SUPPLY PRESSURE REGULATING AND SHUTOFF VALVE, PRSOV, IAW AMM 36-11-09.

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