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NTSB investigation record

WPR09CA152

Completed

Kenneth K Knowles Sonex· N997KK

NTSB Report
Date
March 18, 2009
Location
Cottonwood, AZ
Conditions
VMC
Record
Published September 25, 2020

Primary finding

Probable cause

The loss of engine power for undetermined reasons.

Investigator assessment

Analysis narrative

The pilot experienced a total loss of engine power during the first takeoff of the newly completed homebuilt experimental airplane. The pilot attempted to restart the engine but was unsuccessful. He then executed a forced landing in an open field. During the landing sequence the airplane sustained substantial damage to the left wing when it struck scrub chaparral. Post examination of the airplane and engine by an FAA inspector did not reveal any pre-impact malfunctions that would explain the loss of power.

Source record

Factual narrative

The pilot experienced a total loss of engine power during the first takeoff of the newly completed homebuilt experimental airplane. The pilot attempted to restart the engine but was unsuccessful. He then executed a forced landing in an open field. During the landing sequence the airplane sustained substantial damage to the left wing when it struck scrub chaparral. Post examination of the airplane and engine by an FAA inspector did not reveal any pre-impact malfunctions that would explain the loss of power.

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