Starting Reluctance - 250C20

[EESDL]

Any thoughts on the reason why an allison doesn't like starting within 30 minutes of shutting down?
No clackers/auto-relight lights on start.
Am thinkng it's to do with a cracked Ignitor Plug - is this plausible?

[HeliEng]

EESDL,

Yes, is plausable. Also might be your ignitor box playing up.

Had similar problem on Jet Ranger but wouldn't start when cold, but would go like a dream if just shut down. Changed the ignitor, all was well!

Good luck


Helieng

[EESDL]

Hey, Helieng is alive and kicking! Happy New Year to you!!
If I recall, me thinks it was HMPH that didn't like starting within 15 minutes of shutdown - quite embarrassing when just done a drop off for a punter trying to impress their clients:-)

[Hughes500]

Check the bellows in the fcu. I had the problem the other way round. When cold she would light off at a peak of 850 degrees when warm this would be 700. The bellows was sticky !

[Gomer Pylot]

I think it's also possible that the fuel nozzle and/or the igniter might need cleaning. I've also seen the nozzle shimmed incorrectly, causing strange lightoff problems. Cleaning should be easy enough, and done on regular inspections.

[Heli-Ice]

I've spotted a niche here!

A helicopter "ON" button.....

and the simple systems to follow! (with all the certification stuff that goes with it and the cost and... :sad: ...ahhh well maybe it was not such a good idea after all...)