WIsh I completely understood the start-up procedure relative to the generators - sonthing he mentions in previous video about "frying everything" if something wasn't shut off after starting one engine.
Seems to be a good instructor however, the 2 most important gauges in a turbine engine start are the high pressure compressor RPM AND the ITT gauge! They completely ignored the engine temp on start which is a really big no no. You can see the instructor was watching it out of the corner of his eye, but he should really have mentioned it to the student. The scan I do is for start is: Ng-ITT-Fuel Flow-ITT-Oil Pressure-ITT-Ng-ITT. That's kept me Hot and Hung Start free for a couple of years.
You must have chameleon eyes.. lol. Just watch oil pressure and fuel flow. If those are nominal, you have tons of time to look at ITT for light off and rise. If they aren’t nominal, stop the start right there.. ICO, starter to starter only..
Still not clear on the start-up procedures with regards to the generators on/off. Something in the first video about "frying everything" if something was left on. Would love a detailed explanation from anyone about this...
You mean at 1:30? I don't know what iteration of a PT-6 is on this bird, but it appears to have a two-stage fuel introduction sequence. That is, once the pilot moves the fuel lever from cutoff to low idle, fuel is sent to half of the fuel injectors until somewhere around 35% Ng, at which fuel goes through the remaining injectors. Helps keep the starts a lot cooler.
Battery start is 22VDC according to checklist, missed the fuel panel check. And the biggest mistake: WHY did you not even glance at ITT!!!??? Nobody even confirmed the engine did not do a hot start! Not bad overall, but missed some things.
comment. do not teach your student to forget the database and info on the GPS as you turn it on. a lot of accidents due to datase out of date. do not use da da da. da.
