Original Message

RIPS system was initially proposed but due to the amount it would decrease an already lower useful load than its C+ and ++ predecessors it was never offered on the D.

For helo known ice cert in the US I'd venture it'd have to be a 139 or larger. The only 139's that come to mind flying HAA in the US are in southern / warmer climates. Anyone know of 139's flying HAA in cold climates in the US?