# SDR ABXA20260405150

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2026
- Submitted: April 7, 2026
- Operation: Air carrier
- Aircraft: [N312AA](https://openairdocs.org/aircraft/N312AA), registered now
- Make and model: Boeing 767223
- Aircraft serial: 22315
- Aircraft time: 95,968 hours, 25,279 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 77328810
- Part serial: 871116
- Condition: Defective
- Location: Lt Engine
- Part time: 32,606 hours, 3,072 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA20260405150

## Discrepancy

LEFT ENGINE BLEED OFF AND L PACK OFF EICAS MSG AFTER BLOCKING OUT.  A/C RETURNED TO THE GATE (BTB) AND MTX GROUNDED A/C , TROUBLE SHOT AND REMOVED AND REPLACED L/H PRSOV IAW AMM 36-11-09, A/C REMAINS NO ETOPS.  OPS CHECKS GOOD AND ENGINE IDLE GOOD IAW AMM 71-00-00.  RETURNED A/C TO SERVICE.

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