# SDR CALA2026030914451

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2026
- Submitted: March 9, 2026
- Operation: Air carrier
- Aircraft: [N27733](https://openairdocs.org/aircraft/N27733), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28800
- Aircraft time: 82,003 hours, 30,442 cycles
- System (JASC): [7510 · Engine Anti-Icing System](https://openairdocs.org/jasc/7510)
- Part: Switch
- Part number: 21SN4152
- Part serial: AH08740A
- Condition: Faulted
- Location: Anti-Ice
- Part time: 1,398 hours, 733 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/CALA2026030914451

## Discrepancy

COWL ANTI-ICE AMBER CAUTION LIGHT CAME ON IN CRUISE. ENGINE WAS IDLED PER QRH.  AIRCRAFT PULLED OUT OF SERVICE TROUBLESHOT PER FIM 30-21 TASK 801, UPON INSPECTION FOUND COWL ANTI-ICE CAUTION LIGHT STILL ILLUMINATED. PERFORMED ORIFICE CLEANING IAW AMM 30-21-11-100-801, LIGHT REMAINED ILLUMINATED, REMOVED ENGINE ANTI-ICE PRESSURE SENSOR AND REPLACED  IAW AMM 30-21-21-400-801, OPS CHECK AND LEAK CHECK GOOD.  CAUTION LIGHT NO LONGER ILLUMINATED. ENGINE RUN REQUIRED FOR FINAL REPAIR CONFIRMATION.  PERFORMED 5 MINUTE IDLE RUN IAW AMM 71-00-00-700-801-F00, NO FAULTS NOTED.

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