# SDR AALA20091022RDU01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2009
- Submitted: November 11, 2009
- Operation: Air carrier
- Aircraft: [N920AN](https://openairdocs.org/aircraft/N920AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29521
- Aircraft time: 30,411 hours, 12,466 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Anti-Ice Valve
- Condition: Failed
- Location: Lt Cowling
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20091022RDU01

## Discrepancy

AT TAKEOFF THRUST ABOVE 80KTS LEFT COWL ANTI-ICE LIGHT ILLUMINATED.  RETURNED TO RDU AND LANDED WITHOUT INCIDENT.  REPLACED LEFT COWL ANTI-ICE VALVE AND HIGH PRESSURE 9TH STAGE REGULATOR VALVE.

---
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.