# SDR NACA2021121000001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2021
- Submitted: December 15, 2021
- Operation: Air carrier
- Aircraft: [N351CM](https://openairdocs.org/aircraft/N351CM), registered now
- Make and model: Boeing 767323
- Aircraft serial: 25201
- Aircraft time: 105,187 hours, 18,733 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Isolation Valve
- Part number: 2780539103
- Part serial: 0242
- Condition: Unknown
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2021121000001

## Discrepancy

DURING PRE-DEPARTURE SERVICE CHECK, FOUND LEFT ISOLATION VALVE CB POPPED OUT. REMOVED AND REPLACED LEFT ISOLATION VALVE IAW B767 AMM 36-11-04, OPS CHECK GOOD. NO PART INFORMATION AVAILABLE, VALVE NO LONGER IN SYSTEM.

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