Originally Posted by
RVDT
for helicopters with IBF installed:
Flights in falling or blowing snow shall be prohibited
Flights at or below 5 °C OAT when visible moisture is present shall be avoided. Visible moisture can be precipitation (snow, sleet, ice crystals) or fog/cloud reducing the visibility below 800 m.
Now there's some wonderfully ambiguous English. Does the 800m refer only to fog/cloud or also to precipitation? And noting rain is not in the list of precipitation.
IBF out please!