Lancair Propjet hot start

hotstart due to isolator switch on startup.

Update! I was on N5474J, and diverted to FSM where I ran into the owner of this propjet. I fessed up that I was the publisher of this video, and he explained that the hotstart tripped a fuse which threw a code on the computer. A mechanic replaced the fuse, and the plane was good to go with no engine damage.

Category:

Autos & Vehicles

Tags:

• propjet
• turbine
• hotstart

[biggles72]

Was it becasue he had the fuel pump running for a few minutes while talking? maybe fuel was getting into the engine when it should not have been?

[zaviac778]

Thats certainly part of it. The isolator switch was the main culprit.

[zaviac778]

I'm not familiar with turbines, there is a throttle and a conditioner. If the throttle fails, you can hit the isolator and use the conditioner as a makeshift throttle. Well the isolator was on, so we started the turbine way too rich causing the temprature to spike.

[cessna421ace]

Did anyone else find that interesting?

[raybanman]

The condition lever (used to add fuel) was up from the start. He started it with the fuel already in. Fuel shouldn't be added untill about 20 percent N1. He started it like a piston engine.

[Elhombresombra]

@NMoulana "shit happens"... ;o)

[DiamondPilotDan]

lol that must have been SO embarrassing for blue shirt guy

[MrRaamet]

Never heard of an isolator switch causing a hot start, introducing fuel too fast is your problem. Try reading your checklist next time you start turbine...

[floatplanepilot2]

I don't know about the Lancair, but with the the -135's on my Cheyenne the igniters don't fire unless I've got the condition lever forward. Isolator switch my guess is just for the igniters to prevent them from firing before the lever is forward, the introduction of fuel is probably more of a mechanical process. My guess is they had the condition lever forward before start. I didn't see any motion of moving it forward, but its hard to say.

[8literbeater]

@NMoulana Well said.

[seq165432]

@biggles72 - All those other little whining noises would be artificial horizon, etc.

[sbaker1595]

i think the guy in the left seat threw the fuel in way too soon because the right seater wasnt watching the condition lever position only the ITT....gotta wait till 12% and the instructor never said that....man that ITT gauge moved FAST!!!