# SDR CA050426003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2005
- Submitted: May 2, 2005
- Operation: General aviation
- Make and model: Boeing 727233
- Aircraft time: 68,192 hours, 28,260 cycles
- Engine: Pwa JT8D15
- System (JASC): [3050 · Antenna/Radome Anti-Ice/De-Ice System](https://openairdocs.org/jasc/3050)
- Part: Valve
- Part number: 10607921
- Condition: Fouled
- Location: Nr 2 Engine
- Stage of operation: CR
- 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/CA050426003

## Discrepancy

(CAN) AFTER DEPARTING, THE CREW OBSERVED AN INDICATION OF ANTI-ICE SELECT FAILURE ON NR1 ENGINE. THE CREW RETURNED TO DEPARTURE, WHERE MAINTENANCE FOUND INTERNAL PARTS FROM THE THERMOSTATIC VALVE FOR THE NR1 LT NOSE COWL ANTI-ICE HAD FOULED THE ANTI-ICE VALVE. THE CONTAMINATION WAS REMOVED, THE THERMOSTATIC VALVE, AND THE ANTI-ICE VALVE WERE REPLACED BEFORE THE AIRCRAFT WAS RELEASED FOR RETURN TO SERVICE.

---
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.