Conway , Another advantage of the ST style throttles and collective and the main design feature is the ability to take an engine into manual fuel (ie;ECU lockout) without taking your hand off the collective as the solenoid release switch is on the collective head, this means the ST and 222 series can be flown much safer in a single pilot situation, unlike the Blackhawk or Super Puma for example were you must take your hand off the collective to manipulate the throttles or have the nonflying crewmember do it.