# SDR ASAA2023020341832

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2023
- Submitted: February 7, 2023
- Operation: Air carrier
- Aircraft: [N976AK](https://openairdocs.org/aircraft/N976AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64967
- Aircraft time: 2,582 hours, 785 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Modulating Valve
- Part number: 632920703
- Part serial: 2136
- Condition: Faulty
- Location: #2 Engine
- Part time: 2,579 hours, 783 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023020341832

## Discrepancy

OVERHEAD '' MAINT " LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. REMOVED AND REPLACED # ENGINE FAN AIR MODULATING VALVE PER B737-9 AMM 36-12-03-400-801.

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