# SDR ASAA2023031542373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2023
- Submitted: March 16, 2023
- Operation: Air carrier
- Aircraft: [N948AK](https://openairdocs.org/aircraft/N948AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44090
- Aircraft time: 1,701 hours, 497 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/ASAA2023031542373

## Discrepancy

ON ROLLOUT AFTER LANDING, MASTER CAUTION, OVERHEAD, ILLUM AMBER "MAINT" LIGHT. GROUNDED - YES. FOUND FAULT CODE 36-12020 FAN AIR MODULATING VALVE IS NOT IN COMMANDED POSITION . ACCOMPLISHED B737-9 IFIM 36-12-00. ALL FAULTS CLEARED.

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