Use of manual/continuous ignition
Hello.
I fly a PT6-equipped aircraft and in our AOM it says that manual ignition should be used in turbulence, heavy precipitation, contaminated runway or icing conditions.
However, some captains use manual ignition when encountering light to moderate turbulence at cruise and even descent speeds and I fail to see the logic behind that, since the engine has lots of ram air to use and there is no change in power by means of power lever.
By "turbulence", I'd take it like flying at low speeds, high AOA or when power lever movement is required, i.e. takeoff, climb, approach and landing. Other than that, I don't see how a moderate turbulence encounter at cruise speed could possibly cause a flame-out. Am I missing something?
Thanks in advance