The Analyst's analysis - BSV no.48
In October 2017, the BEA published the report on the accident involving the Dyn'Aero MCR01M microlight registered 84-MP which occurred on 12 August 2016 at the Col de Bacchus (26). The pilot was killed.
Full report at:
https://bea.aero//uploads/tx_elydbrapports/BEA2016-0482.pdf
The pilot was probably used to using the mountain landing strip (altisurface). However, with routine and time, degradations in the level of safety creep insidiously into the usual activity of the pilot, without his knowledge. These include, for example:
- a gradual deterioration of the grass strip,
- trees that grow, year after year,
- allowing for slightly less favourable air conditions than usual,
- a peculiarity of the aircraft, probably minor but real (a microlight derived from an aircraft previously registered as an aeroplane),
- sub-optimal maintenance or engine ageing leading to imperceptible reductions in power,
- training that has weakened over time as regards handling the aircraft at very low speeds,
- reduced responsiveness on the controls in the event of an abnormality on take-off.
These deteriorations form the "breeding ground" for an accident when the trigger suddenly appears: here, probable impurities in the carburettor that significantly reduced power.
Bernard Boudou
Flight Safety Analyst
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