Tailpipe Fire on Shutdown
 

Hi there,

Can anyone shed some light on the chances of getting a tailpipe fire on shutdown with the CF6-80 type engines on a B744?

Thank you

I don't think there's any real history of this happening - if it did happen I'd think it likely to be an oil leak in or around a turbine sump. Check the manufacturer's SOI.

I knew of a military engine that, if taxied in "Hot" and promptly shutdown, would experience a brief re-ignition. The hot oil in the oil cooler would boil off a small bit of fuel that could only escape via the fuel nozzles.

The service was disinclined to call it a "fire" because of its short duration and no harm done - so the terminology was deemed to be "post-shutdown Dieseling". :rolleyes:

I agree with barit1

I have never seen or heard of a tail pipe fire happen on my company fleet who have been operating CF6-80s since 1989.

Last time I saw such an event was on a PW JT9D on shut down and the RB211 G can catch people out whom do igniter checks without doing a dry spin first to remove pooled fuel. It took 8 bolts to fix the defect last time it occurred

Or should we say.. McBolts? :}