Fatal glider crash near Seillans highlights medical oversight risks

Casualties unknown • Seillans, FR

A 71-year-old pilot died when his amateur-built glider struck trees and terrain during a local flight in southern France.

What happened

On March 26, 2016, a JP 15-34 glider, registered F-CRJB, was performing a local flight near the Fayence - Tourrettes airfield. After being towed and releasing the cable at approximately 1,180 meters, the pilot began a series of right-hand turns while searching for thermals. While flying northwest toward the terrain north of Seillans, the aircraft entered a descent that resulted in a collision with treetops and the ground. The impact caused the death of the pilot and the destruction of the aircraft.

The investigation

Investigators examined the wreckage and the accident site, noting that the right wing struck vegetation before the final impact, suggesting the aircraft was in a nose-down attitude. No mechanical anomalies were found in the wreckage. Meteorological conditions were clear with light to moderate turbulence and a southeast wind of 8 to 10 knots.

Regarding the pilot's medical status, the investigation found that while the pilot held a valid Class 2 medical certificate, he suffered from several complications related to non-insulin-dependent diabetes, including microangiopathy, renal insufficiency, and anemia. Although the pilot was taking oral antidiabetic medication—a condition that requires consultation with the licensing authority—this consultation did not take place. Furthermore, while the pilot's medical history included cardiac stress tests that showed anomalies, the investigation could not confirm if the examining physician was aware of these specific results.

Findings

  • The exact cause of the accident could not be definitively determined, but the flight path suggests a loss of control during a right-hand turn.
  • The pilot was subject to several "silent" diabetic complications, such as microangiopathy, which could lead to sudden incapacitation through events like retinal hemorrhage or hypoglycemia.
  • There was a failure to follow regulatory procedures regarding the consultation between the examining physician and the licensing authority for pilots using oral antidiabetic treatments.
  • The medical monitoring system for general aviation pilots showed vulnerabilities, specifically regarding the assessment of asymptomatic but progressive diseases.

Probable cause

While the specific cause of the loss of control remains undetermined, the investigation highlights the potential for sudden in-flight incapacitation due to the pilot's underlying diabetic complications and a lack of adequate medical oversight regarding his fitness to fly.

Frequently asked questions

What happened in the 2016-03-26 JP 15-34 accident near Seillans, FR?

A 71-year-old pilot died when his amateur-built glider struck trees and terrain during a local flight in southern France.

What aircraft was involved and where did it happen?

The accident on 2016-03-26 involved a JP 15-34, registration F-CRJB, at Seillans, FR.

What was the probable cause of the accident?

While the specific cause of the loss of control remains undetermined, the investigation highlights the potential for sudden in-flight incapacitation due to the pilot's underlying diabetic complications and a lack of adequate medical oversight regarding his fitness to fly.

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