# SDR ASAA2018121227383

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2018
- Submitted: December 15, 2018
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 45,830 hours, 13,754 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7510 · Engine Anti-Icing System](https://openairdocs.org/jasc/7510)
- Part: Valve
- Part number: 32156184
- Part serial: 3238
- Condition: Intermittent
- Location: Nr 2 Anti Ice
- Part time: 51,093 hours, 16,936 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/ASAA2018121227383

## Discrepancy

#2 ENGINE ANTI-ICE BLUE (COWL VALVE OPEN) LIGHT DOES NOT STAY DIM WHEN ENGINE ANTI ICE SELECTED ON (LT INTERMITTENTLY SWITCHES BACK AND FORTH) (DIM TO BRIGHT). GROUNDED - YES. REF B737-800 WDM'S 30-21-11/30-21-21 PG1, W/DP1303 OFF VALVE, SW ON, AND SHOWS BRIGHT TILL PINS 8+9 ON SAME CONN JUMPERED AND GOES DIM.  SUSPECT BAD VALVE (V4). REMOVED AND INSTALLED #2 ENGINE COWL TAI VALVE REF B737-800 AMM 30-21-11. OPS CHK GOOD.

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