# SDR ASAA2023051643246

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2023
- Submitted: May 17, 2023
- Operation: Air carrier
- Aircraft: [N915AK](https://openairdocs.org/aircraft/N915AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44080
- Aircraft time: 6,974 hours, 2,161 cycles
- Engine: Cfmint LEAP1B21
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/ASAA2023051643246

## Discrepancy

AFTER LANDING "MAINT" ILLUMINATES DURING TAXI. GROUNDED - YES. FOUND FAULT CODE 36-12020 FAN AIR MODULATING VALVE NOT IN COMMANDED POSITION. ACCOMPLISHED B737-9 IFIM 36-12-00-810-801 LRU TEST PASS NO FAULTS FOUND AFTER TEST. INTERMITTENT FAULT.

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