Hi Nick,
Long time no see! In the 76, if the ship's battery is completely flat because someone left the master switch on for a few days, would it be dangerous to do an external start and allow the generators to recharge the battery. I thought there were enough built in safety features to prevent a thermal runaway, so I was a bit surprised when the company recalled the aircraft which was now 50 miles out to sea and blasted the two pilots for endangering the passengers.