# SDR CALA2026072317955

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2026
- Submitted: July 23, 2026
- Operation: Air carrier
- Aircraft: [N37510](https://openairdocs.org/aircraft/N37510), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43445
- Aircraft time: 19,462 hours, 6,372 cycles
- Engine: Cfmint LEAP1B21
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Anti-Ice Valve
- Part number: 632160664
- Part serial: 4544
- Condition: Stuck
- Location: Zone 400
- Part time: 3,489 hours, 1,153 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072317955

## Discrepancy

NR 2 ENGINE ANTI-ICE COWL VALVE LIGHT IS ON,  VALVE STUCK CLOSED.   CREW TURNED OFF FOR THE DURATION OF THE FLT. R & R THE ENGINE ANTI ICE VALVE IAW MM 30-21-11/401 42-3021-9-0001,  PERFORMED OPS CHECK IAW MM 30-21-11-400-801. OPS CHKD SATISFACTORY. OK TO CONTINUE.

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