# SDR ASAA2015101313493

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2015
- Submitted: October 15, 2015
- Operation: Air carrier
- Aircraft: [N534AS](https://openairdocs.org/aircraft/N534AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35202
- Aircraft time: 19,043 hours, 5,595 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Valve
- Part number: 32156184
- Part serial: 4079
- Condition: Failed
- Location: Nr 1 Inlet
- Part time: 39,221 hours, 11,865 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015101313493

## Discrepancy

NR 1 ENGINE ANTI-ICE COWL VALVE OPEN, LIGHT ON WHEN ANTI-ICE SWITCH IS OFF.  ACFT GROUNDED. REPLACED NR 1 ENGINE COWL TAI VALVE REF MM 30-21-11-000-801 AND 30-21-11-400-801. PERFORMED OPS TEST, REF MM 30-21-00-710-801, OPS CHECKS NORMAL.  ETOPS GROUND VERIFICATION TEST PASS SUCCESSFUL, REF MM 30-21-00.

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