# SDR ASAA12511524

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2012
- Submitted: May 9, 2012
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 12,286 hours, 3,730 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Anti-Ice Valve
- Part number: 32156184
- Part serial: 5736
- Condition: Malfunctioned
- Location: Nr 1 Nacelle
- Part time: 14,209 hours, 4,800 cycles
- Stage of operation: CR
- 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/ASAA12511524

## Discrepancy

NR 1 ENG "COWL VALVE OPEN" LIGHT FLICKERED TO BRIGHT/DIM INTERMITTENTLY PRIOR TO DESCENT FROM FL370 (THE BLUE LIGHT).  ACFT GROUNDED.  R & R ENGINE COWL TAI VALVE IAW AMM 30-21-11.  GROUND FUNCTIONAL TEST GOOD IAW AMM 30-21-710-801. NO HISTORY LAST 30 DAYS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.