Service difficulty report · Arm Assembly · Beech A100

Difficulty date
July 29, 1996
Submitted
March 26, 2000
Operation
Air carrier
Make and model
Beech A100
Engine
Pwa PT6A28
Propeller
Hartzl HCB4TN3
Part
Arm Assembly
Part number
10096004511
Condition
Bent
Location
Prop Control
Component
Beech · 10096004511
Stage of operation
TO
Nature of condition
O
Precautionary procedure
A

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

What was found

(CAN) ON TAKEOFF THE #2 PROP RPM WAS OBSERVED TO BE DECREASING, TORQUE WAS INCREASING. THROTTLE WAS RETARDED AND PROPELLER WENT TO FEATHER. INVESTIGATION FOUND THE LOW PITCH ARM WAS BENT AND INTERFERING WITH THE PROXIMITY SWITCH AND CREATING A CONTINUOUS LOW PITCH ACTIVATION. THE ARM WAS ADJUSTED AND CHECKS CARRIED OUT AND THE AIRCRAFT RETURNED TO SERVICE.

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