Catplaystation
Having flown the BN2A (with 300 hp engines) I confirm that with 7 people on board it maintained altitude with temp above ISA with one engine operating at simulated feather.
The initial post said the aircraft involved in this accident had a double engine failure. If that is the case your rant about the single engine performance is not really relevant.
if one engine failed with only 5 people on board I would have expected it to maintain altitude but only if the inoperative propellor was correctly feathered.