# SDR CALA2025040703612

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2025
- Submitted: April 7, 2025
- Operation: Air carrier
- Aircraft: [N76054](https://openairdocs.org/aircraft/N76054), registered now
- Make and model: Boeing 767424ER
- Aircraft serial: 29449
- Aircraft time: 95,050 hours, 13,487 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 80217012
- Part serial: 9909070
- Condition: Faulty
- Location: Nr 1 Engine
- Part time: 770,743 hours, 710,950 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025040703612

## Discrepancy

L ENG BLEED OFF EICAS WITH L PACK OFF CAME ON FL350 2HR30MIN INT O FLT INTERROGATED ASCTU AND FOUND LH PRV FAILED. REMOVED AND REPLACED LH PRV REF AMM 36-11-18 AND PERFORMED OPS AND GROUND CHECKS REF AMM 36-23-00 AND 36-00-26, OPS AND BITE CHECK GOOD. ENGINE RUN, BLEED SYSTEM FUNCTIONS AS REQUIRED.

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