# SDR ASAA2022123081313

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2022
- Submitted: December 30, 2022
- Operation: Air carrier
- Aircraft: [N464AS](https://openairdocs.org/aircraft/N464AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40714
- Aircraft time: 32,714 hours, 10,157 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32895626
- Part serial: 9396
- Condition: Failed
- Location: #1 Eng Precooler
- Part time: 2,616 hours, 806 cycles
- 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/ASAA2022123081313

## Discrepancy

WHILE ACCOMPLISHING ASA T/C N8436001 FOUND PRE COOLER VALVE BAD. GROUNDED - YES. REMOVED AND REPLACED PCV FOR #1 ENG REF B737-900 AMM 36-12-02.

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