Billion dollar hamburger?
I assume it is not a single spool engine?
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Random Griz Aviation Musings
- Thread starter Griz882
- Start date
Correct- PT-6 engines (e.g. T-6, T-44, C-12, T-54) have a free power turbine, so they are governed differently from the E-2, C-2, and P-3 single-shaft engines.
Checks that no other pt6 equipped aircraft operator does...Overspeed governor and before takeoff checks, training command style (slowly and deliberately).
Pedantic trivia warning: Pitch lock is not a thing on the T-6, and you can only feather the prop when the motor is shut down (unless the hub loses oil pressure). It’s very quick to check the system- can even be done on the roll. The airplane doesn’t “need” any time in the runup area, but it’s good training for new pilots.
Pitch lock is not a "thing" on the PT6, but KA pilots do feather and autofeather checks, at least they're supposed to...
On the road (or when RDO), I'd do the Fx and governor check during the taxi. I'd just go Max Beta and brake so that I didn't have to ride the breaks too much when doing the governor check or going into Fx.
I was about to say, I see King Airs doing feather checks all the time.
It's been a long time since I've messed with a PT6A (RC-12 Crew Chief [86-89] & T-34C SNFO time [96])...Maybe I'm cross threading it with my C-2A Crew Chief T56 days....Overspeed governor and before takeoff checks, training command style (slowly and deliberately).
Pedantic trivia warning: Pitch lock is not a thing on the T-6, and you can only feather the prop when the motor is shut down (unless the hub loses oil pressure). It’s very quick to check the system- can even be done on the roll. The airplane doesn’t “need” any time in the runup area, but it’s good training for new pilots.
First flight of the day only
34 was different. No pitch lock though, it was still a PT6 engine. I seem to recall that- unlike the T6- we did feather checks, since that powerplant also had a condition lever and beta.
The more things change the more they stay the same