# SDR ASAA0954328

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2009
- Submitted: February 2, 2009
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 24 hours, 20 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Warning System
- Condition: Malfunctioned
- Location: Anti-Ice System
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0954328

## Discrepancy

NR 1 ENGINE ANTI ICE COWL VALVE REMAINS ILLUMINATED BRIGHT WHEN SELECTED ON.  ENGINE POWER (THRUST) SELECTION HAS NO EFFECT.  GROUNDED YES.  CAPT. REPORTED CYCLED NR 1 ENG.  COWL SWITCH AND LIGHT WAS SLOW TO GO DIM.  AFTER LANDING CREW CYCLED SWITCH SEVERAL TIMES WITH NO DEFECTS.  PERFORMED FIM TASK 30 21 00 810 802 WITH NR 1 ENG. AT GROUND IDLE.  CYCLED NR 1 ENG. ANTI ICE SWITCH 5 TIMES WITH NO DEFECTS NOTED.  INTERMITTENT FAULT WITH NO HISTORY. VERIFICATION FLIGHT OPS CHECKS NORMAL.

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