On March 25, 1990, a Cessna 170 (registration N4130V) was involved in an aviation accident near Republic, WA. Investigators recorded the probable cause as: The pilot's failure to maintain adequate airspeed during the takeoff climb, which resulted in a stall, due to the aircraft's known low engine compression. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot attempted to clear low hills after takeoff in an aircraft with known low engine compression, resulting in a stall and impact with a hillside.
What happened
The pilot initiated takeoff in an aircraft that had a documented deficiency of low engine compression. During the climbout phase, the pilot attempted to clear low hills located at the end of the runway. The aircraft stalled and nosed into a hillside.
The investigation
The aircraft had been certified as airworthy during its annual inspection despite having unacceptable compression on two cylinders.
Findings
low engine compression
stall during climbout
impact with terrain
Probable cause
The pilot's failure to maintain adequate airspeed during the takeoff climb, which resulted in a stall, due to the aircraft's known low engine compression.