Fatal training flight accident near Valentia, Ontario

Casualties unknown • Valentia, Ontario, CA

A Cessna 152 training flight resulted in two fatalities after the aircraft entered a spiral manoeuvre and struck trees at high speed.

What happened

During a scheduled training flight on a sunny day with clear visibility, a Cessna 152 departed Oshawa airport, Ontario, for a one-hour instructional session. The flight, intended to practice climbing, descending, and turning, was being conducted by an instructor and a student pilot. As the flight neared completion, a witness observed the aircraft in a steep, nose-down attitude. The aircraft appeared to rotate twice to the right before disappearing behind a treeline. The aircraft subsequently struck trees at high speed and crashed into a swamp located southwest of Valentia.

Both the instructor and the student pilot sustained two fatal injuries following the impact.

The investigation

The investigation examined the aircraft's mechanical condition, maintenance history, and the flight's circumstances. Maintenance records showed the aircraft was properly maintained, with the most recent inspection completed 15 flight hours prior to the accident. An examination of the Avco Lycoming engine revealed no mechanical discrepancies that would have prevented normal operation, and the engine was found to be capable of producing power.

Analysis of the wreckage showed significant impact damage to the wings and horizontal stabilizer, though the impact angle suggested the wings were level and the aircraft was in a shallow descent at the moment of contact. While investigators noted fatigue cracks in the bolts of the left seat back, it could not be determined if this failure occurred during flight or due to the crash forces. The investigation also noted that the aircraft's altitude during the manoeuvre was below radar coverage, making it impossible to track the exact descent via radar data.

Findings

  • The aircraft entered a spiral manoeuvre that continued below the altitude required for safe recovery under regulations.
  • The aircraft was likely attempting to enter a recovery attitude just before striking the trees.
  • There was no evidence of engine failure or structural failure of the airframe prior to the impact.
  • Weather conditions were ideal and were not a contributing factor to the accident.

Probable cause

The aircraft entered a spiral manoeuvre that was not recovered from until the aircraft was below the legal minimum altitude for aerobatic manoeuvres, leading to a high-speed impact with trees.

Frequently asked questions

What happened in the 1999-04-06 Cessna 152 C-GGGK accident near Valentia, Ontario, CA?

A Cessna 152 training flight resulted in two fatalities after the aircraft entered a spiral manoeuvre and struck trees at high speed.

What aircraft was involved and where did it happen?

The accident on 1999-04-06 involved a Cessna 152 C-GGGK, operated by Canadian Flight Academy Ltd., at Valentia, Ontario, CA.

What was the probable cause of the accident?

The aircraft entered a spiral manoeuvre that was not recovered from until the aircraft was below the legal minimum altitude for aerobatic manoeuvres, leading to a high-speed impact with trees.

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