Aircraft: Cessna 172. Injuries: 2 Minor. Location: Pompano Beach, Fla. Aircraft damage: Substantial.
What reportedly happened: According to the pilot, the airplane was descending on final approach when the throttle control became stuck on idle.
Attempts to restore power were unsuccessful and the pilot made a forced landing on a road. The airplane hit a lightpost.
The post-accident examination revealed that the throttle cable had separated from its housing/end fitting. As a result, the throttle cable could not actuate the control, and the engine remained at idle rpm.
A review of the airframe and engine logbooks revealed that the throttle cable was not maintained in accordance with the manufacturer’s service manual.
Probable cause: The separation of the throttle cable from its fitting, which resulted in an inability to control engine power. Contributing to the accident was the inadequate maintenance by the owner.
NTSB Identification: ERA12LA058
This November 2011 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.