The aircraft encountered heavy rain on short final, and attempted a go around.
However, the aircraft encountered a genuine emergency when it lost the drive to its tail rotor.
The cause was determined to be the adverse weather the aircraft encountered, specifically the lightning strike.
Immediately after becoming airborne, the aircraft encountered a strong right cross-wind and settled back onto the strip.
Both aircraft encountered severe weather conditions and the helicopter was unable to take on fuel.
It is probable that the aircraft encountered a thermal caused by the hot weather, for suddenly the right wing lifted.
The two aircraft suddenly encountered each other in the mist, neither having time to take evasive action.
At that point the aircraft encountered a large flock of starlings.
The aircraft had encountered adverse weather during the landing approach.
It was clear to investigators the aircraft had encountered a bird strike upon take-off.