SDR CA110606015

Service difficulty report · Cable · Dhav DHC6300

Difficulty date: May 26, 2011
Submitted: September 9, 2011
Operation: Air carrier
Make and model: Dhav DHC6300
Aircraft time: 11,568 hours
Engine: Pwa PT6A27
System (JASC): 2200 · Auto Flight System
Part: Cable
Condition: Binding
Location: Autopilot
Part time: 11,768 hours
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

UPON CARRYING OUT A SECONDARY INSPECTION OF THE S-TEC-65, AUTOPILOT INSTALLATION OF THE SERVOS, FOUND THAT THE SECONDARY OR RETURN PITCH SERVO CABLE WAS CAUGHT ON THE PITCH SERVO ON ONE OF THE SCREWS. THE WAY THAT THE CABLE BECAME CAUGHT ON THE PITCH SERVO WAS BECAUSE OF THE TEST PROCEDURE THAT STEC HAS LAID OUT. ASK TO OVERPOWER THE SERVO ONE WAY AND THEN THE OTHER THUS CREATING SLACK IN THE CABLE.