Service difficulty report · Servo · Cessna 172S

Difficulty date
September 28, 2000
Submitted
November 1, 2000
Operation
General aviation
Aircraft
N948SP
Make and model
Cessna 172S
Aircraft serial
172S8144
Engine
Lyc IO360L2A
Part
Servo
Part number
25765362
Part serial
70168504
Condition
Failed
Part time
824 hours
Stage of operation
NR
How discovered
C
Nature of condition
R
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE RSA-5AD1 FUEL SERVO WILL NOT MEET SPECIFICATIONS. FUEL FLOW BELOW 1700 RPM IS TOO HIGH, AT IDLE RPM IS ERRATIC, AND THE IDLE SPEED AND IDLE MIXTURE CANNOT BE SET TO SPECIFICATION WITH SATISFACTORY ENGINE OPERATION. FUEL SERVO REMOVED, SENT FOR REPAIR. MAJOR REPAIRS ACCOMPLISHED AND SERVO REFLOWED TO PRECISION FLOW SHEET 30075-02 DATED 1-5-00. REINSTALLED FUEL SERVO, ADJUSTED IAW SPECS, OPERATIONAL CHECKED SATISFACTORY. SUBMITTER RECOMMENDED ANY RSA-5AD1 FUEL SERVO NOT FLOWED TO PRECISION FLOW SHEET 30075-02, BE REMOVED IMMEDIATELY AND SENT TO APPLICABLE REPAIR STATION FOR REPAIR. (X)

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