# SDR CALA2024121001458

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2024
- Submitted: December 10, 2024
- Operation: Air carrier
- Aircraft: [N16701](https://openairdocs.org/aircraft/N16701), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28762
- Aircraft time: 82,034 hours, 29,710 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: Faulted
- Location: Nr 1 Engine
- Stage of operation: NR
- 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/CALA2024121001458

## Discrepancy

CHIME ALERT *LEFT DUCT PRESSURE LOW* DURING CLIMB.  PERFORMED #1 ENGINE PNEUMATIC SYSTEM TROUBLE SHOOT IAW FIM 36-10 TASK 805, FOUND PRSOV LEAKING AT DIAPHRAGM.  REMOVED AND REPLACED #1 ENGINE PRSOV IAW AMM 36-11-04/401, OPS TEST GOOD NO LEAKS NOTED.

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