# SDR ABXA2021115109

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2021
- Submitted: November 8, 2021
- Operation: Air carrier
- Aircraft: [N750AX](https://openairdocs.org/aircraft/N750AX), registered now
- Make and model: Boeing 767232
- Aircraft serial: 22227
- Aircraft time: 88,932 hours, 40,649 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 77328810
- Part serial: 871225
- Condition: Intermittent
- Location: Left Engine
- Part time: 19,786 hours, 7,395 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA2021115109

## Discrepancy

AFTER START L BLEED OFF EICAS MESSAGE WAS DISPLAYED BLEED SWITCH LIGHT ALSO ILLUMINATED. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. REMOVED & REPLACED #1 ENG PRSOV IAW B767 AMM 36-11-09. OPS & LEAK CHECK GOOD; PERFORMED LEFT ENGINE RUN IAW AMM 71-00-00; OPS CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE

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