Pilot’s assessment of cause
The pilot reported he did not see or feel anything unusual in entering the hover, but that
the aircraft lost power. When asked why he had used full carburettor heat, the pilot stated
he had been taught “you can never have too much carb heat”. He was unaware that
carburettor heat had an adverse effect on the aircraft’s performance.
Strewth! Who taught him about aero engines (or rather, who didn't)?