I've got 10 years on type and currently a TRE/TRI on the 600 for the last 2 years.
The ATR is perfectly capable of maintaining a rate of climb with an unfeathered prop if controlled correctly. ATR don't specifically have a procedure to deal with the no autofeather scenario due to the odds of it occurring. That been said many operators have their own for safety reasons.
Generally a crew would identify the ATPCS had failed during the initial memo items immediately after the gear is selected up (let's say 100ft). Timely identification takes place and the engine would be shut down. This is not a difficult procedure and an experienced crew would have no issues maintaining 200/300ft/min until completed
I personally don't like speculating on accidents but I highly doubt a failure of the auto feather system is the culpriate. If indeed there was a failure of the left engine after takeoff then it could be as simple as the crew mishandling the failure.
Last edited by BO0M; 4th Feb 2015 at 09:09.
Reason: Auto correct issues