SDR CA120203009

Service difficulty report · Servo · Bombdr DHC8400

Difficulty date: January 25, 2012
Submitted: September 14, 2015
Operation: General aviation
Make and model: Bombdr DHC8400
Engine: Pwc PW150A
Propeller: Rotol CR4086123F17
System (JASC): 2216 · Autopilot Trim Servo
Part: Servo
Part number: C18117AA
Condition: Malfunctioned
Location: Ap Roll
Part time: 4,883 hours
Stage of operation: DE
How discovered: O
Nature of condition: F
Precautionary procedure: O

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

What was found

(CAN) DURING DESCENT, THE AP SEEMED TO BE HAVING PROBLEMS STAYING ON COURSE, THE AUTOPILOT WAS DISCONNECTED AND ROLL CONTROL APPEARED TO BE SOMEWHAT, JAMMED, BUT COULD STILL CONTROL ACFT WITH AVAILABLE ROLL CONTROL. IT WAS JUST A REALLY, STIFF, CONDITION THAT LASTED FOR A MINUTE OR 2. MAINTENANCE REPLACED THE AP ROLL SERVO.