# SDR AWXA200400200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2004
- Submitted: February 23, 2004
- Operation: Air carrier
- Aircraft: N906AW
- Make and model: Boeing 757-2S7
- Registry model: [Boeing 757-2S7](https://openairdocs.org/model/boeing-757-2s7) (OpenAirDocs)
- Aircraft serial: 23568
- Aircraft time: 67,766 hours, 26,694 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Pressure Switch
- Part number: 4603KPS235
- Part serial: TR565
- Condition: Defective
- Location: Nr 1 Engine
- Part time: 52,455 hours, 21,446 cycles
- Stage of operation: CL
- 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/AWXA200400200

## Discrepancy

AFTER TAKEOFF AT PHX EN ROUTE FOR MSP RECEIVED EICAS MESSAGE -L ENG ANTI-ICE- WITH NR 1 ENGINE ANTI-ICE VALVE LIGHT ILLUMINATED.  DUE TO ICING CONDITIONS AT MSP TURNED BACK TO PHX FOR REPAIR.  MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE ANTI-ICE VALVE, DID NOT CORRECT THE PROBLEM, REPLACED ENGINE ANTI-ICE LOW PRESSURE SWITCH IAW BMM 30-21-01.  PERFORMED ENGINE RUN, ANTI-ICE VALVE OPERATED NORMALLY, NO LIGHT OR EICAS MESSAGES NOTED. FUNCTIONAL TEST OF ANTI-ICE LOW PRESSURE SWITCH S/N TR565 WAS NO FAULT FOUND, INSULATION, LEAKAGE, AND CALIBRATION TESTS WERE GOOD.

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