The propeller control units were tested and were discovered to perform within specification.
2.
The company produces propellers, spinners, governors, ice protection systems and other propeller controls.
3.
This device was the propeller governor, or a propeller control unit.
4.
Elmer E . Woodward conceived, designed and developed the first successful propeller control in 1933.
5.
To combat this problem, the Propeller Control System + was developed by the Royal Netherlands Navy.
6.
Propeller control for the two Lycomings was electrical.
7.
As engine controls have moved toward electric-based systems, Woodward has responded with a line of electric propeller controls.
8.
Since only one nation has tested the Propeller Control System +, there is a lack of availability for prospective customers.
9.
Investigation finds cause to be failure of tail propeller control system, causing overspeed condition which generated unexpected and uncontrollable nose-down pitch.
10.
The NTSB concluded the pilot lost control of the plane because a part in the propeller control unit had prematurely worn out.
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