An old Hagen pilot told me just recently he once did a trip in formation with Helly Hagen -Daru in a pair of Twotters. The weather was the usual 8 octas of diwai stratus at Daru. Mate did instrument let down and cracked it .Helly flew out to sea and came back underneath
Contrary to what some thought he probably never I- EFFED it, he just flew hard.