# SDR 20010410AP013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2001
- Submitted: March 16, 2001
- Operation: General aviation
- Aircraft: [N949SP](https://openairdocs.org/aircraft/N949SP), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S8145
- Aircraft time: 774 hours
- Engine: Lyc IO360L2A
- Engine time: 774 hours
- System (JASC): [7322 · Fuel Control/Reciprocating Engines](https://openairdocs.org/jasc/7322)
- Part: Servo
- Condition: Malfunctioned
- Location: Fuel Flow
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010410AP013

## Discrepancy

ENGINE RSA-5AD1 FUEL SERVO WILL NOT MEET SPECIFICATIONS.  FUEL FLOW BELOW 1700 RPM IS TOO HIGH. IDLE SPEED AND MIXTURE CAN NOT BE SET TO MFG SPECIFICATIONS WITH SATISFACTORY ENGINE OPERATION.  FUEL SERVO REMOVED, SENT FOR REPAIRS.  MAJOR REPAIRS ACCOMPLISHED AND SERVO REFLOWED TO PRECISION FLOW SHEET 30075-02 DATED 5 JAN 00.  REINSTALLED FUEL SERVO, ADJUSTED IAW MFG SPECIFICATIONS, OPERATIONAL AND FLIGHT CHECKED SATISFACTORY.

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