# SDR ASAA2014121709994

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 2014
- Submitted: December 19, 2014
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 22,637 hours, 6,799 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Valve
- Part number: 32156184
- Part serial: 5032
- Condition: Failed
- Location: Nr 2 Engine
- Part time: 29,271 hours, 9,177 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014121709994

## Discrepancy

AFTER ENGINE START, PLACED BOTH ENGINE ANTI-ICE SWITCHES ON ,  THE ENGINE NR 2 COWL VALVE OPEN LIGHT REMAINED BRIGHT.  CLOSED APU BLEED AIR SWITCH OFF & INCREASED THRUST TO 40 PERCENT N1 ON NR 2 ENGINE.  COWL VALVE OPEN LIGHT REMAINED ILLUMINATED BRIGHT BLUE AS WELL AS AMBER "TAI" ABOVE N1 INDICATOR.  ACFT GROUNDED.  REPLACED NR 2 ENGINE COWL TAI VALVE REF AMM TASK 30-21-11-000-801 AND 30-21-11-400-801, OPS TEST PASSED.

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