# SDR DXTA2012090405113

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2012
- Submitted: September 4, 2012
- Operation: Air carrier
- Aircraft: [N670QS](https://openairdocs.org/aircraft/N670QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605170
- Aircraft time: 9,685 hours, 7,600 cycles
- Engine: Pwa PW545A
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Servo Valve
- Part number: 30J349001
- Part serial: TR5755
- Condition: Inoperative
- Location: Bleed Sys
- Part time: 233 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2012090405113

## Discrepancy

LEFT EEC REVERTED TO MANUAL DURING CLIMB. COMPLIED WITH CHECKLIST. THROTTLE RESPONSE WAS GREATER THAN EXPECTED A CHANGE OF 6 TO 8 PERCENT RATHER THAN 2 TO 3 PERCENT FOR SAME THROTTLE MOVEMENTS BETWEEN LT AND RT THROTTLES WITH BOTH IN MANUAL. ON POST FLIGHT FOUND LT ECS DOLLS EYE WHITE IN AFT BAY. R & R LT ENGINE BLEED VALVE TORQUE MOTOR WITH O/H IAW MM 75-30-01.  PERFORMED SECONDARY ORIFACE CALIBRATION AND ENGINE PERFORMANCE RUNS IAW MM 71-00-00. OPS CHECK GOOD. REINSTALLED WITH SAME ORIFACE SIZE 56.

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