# SDR ASAA2023051043207

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2023
- Submitted: May 12, 2023
- Operation: Air carrier
- Aircraft: [N958AK](https://openairdocs.org/aircraft/N958AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44072
- Aircraft time: 994 hours, 274 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 632920704
- Part serial: 3254
- Condition: Failed
- Location: #2 Engine
- Part time: 983 hours, 272 cycles
- Stage of operation: LD
- 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/ASAA2023051043207

## Discrepancy

ON LANDING GOT OVERHEAD MASTER CAUTION AND MAINTENANCE LIGHT REMAINED ON THRU TAXI & AFTER SHUTDOWN. GROUNDED - YES. REMOVED AND REPLACED FAN AIR MODULATING VALVE REF B737-9 AMM 36-12-03-400-801.

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