Lyons Navajo HKS

Waterville, WA — August 7, 2008

Event Information

DateAugust 7, 2008
Event TypeACC
NTSB NumberSEA08CA172
Event ID20080828X01349
LocationWaterville, WA
CountryUSA
Coordinates47.80000, -119.80000
Highest InjurySERS

Aircraft

MakeLyons
ModelNavajo HKS
CategoryAIR
FAR Part091
Aircraft DamageSUBS

Conditions

Light ConditionDAYL
WeatherVMC

Injuries

Fatal0
Serious2
Minor0
None0
Total Injured2

Event Location

Probable Cause

The pilot's failure to maintain aircraft control while maneuvering. Contributing to the accident was a microburst condition.

Full Narrative

The sport pilot flight instructor reported that while maneuvering during a local instructional flight, he noticed dust forming in a circular pattern within the air near their position. The student pilot, who was flying the airplane, initiated a climbing 180-degree turn towards their point of departure. While approaching a ridge line about 800 feet above ground level, the instructor noted the turbulence was increasing while the airplane started to descend and took control of the airplane. The instructor stated that despite using full throttle, the airplane continued to descend rapidly while "getting forced down by a microburst," prompting him to initiate a forced landing into an open field. The instructor added that due to the low altitude, he was unable to align the airplane with the rows of dirt. During the approach to landing, the airplane "caught some lift" and subsequently entered a "strong down draft" and impacted the ground. Examination of the airplane by the instructor revealed that both wings and fuselage framing were structurally damaged. The instructor stated that there were no mechanical anomalies with the engine or flight control system that would have prevented normal operation.

About This NTSB Record

This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.

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