747 "Flames" From Engine On Start Up?

[Sheep fancier]

What causes this, inhibiting oil, slight fuel/oil spill within the nacelle?

[PaperTiger]

"Hot Start" or "Wet Start", depending where you live.

Unburnt fuel which collected in the engine or tailpipe the last time it was shut down is ignited when you start it up again. The chaps in the Tech Forum can explain it in detail if you want.

Here's a video: http://www.metacafe.com/watch/319186/airplane_accident/

[Sheep fancier]

Thanks very much for the info.

[ABX]

So predictable to see the uninformed opinions of the posters under that video in metacafe ... "so dangerous" & "why was the camera man just standing there" etc.

[NutLoose]

I think you find that film is it burning off inhibiting fluid as the engine has been just put on the wing....... the person is standing there because he knows it will happen.

[Blues&twos]

Hello. What is inhibiting fluid please??

[henry crun]

Blues&twos: Google will give you all the info.

[yachtno1]

It stops the internal parts of the engine from corroding and reduces deterioation whilst the engine is in storage. Causes a smoke screen when the engine is first started.

[Capt. Inop]

"Hot Start" or "Wet Start", depending where you live.

Unburnt fuel which collected in the engine or tailpipe the last time it was shut down is ignited when you start it up again. The chaps in the Tech Forum can explain it in detail if you want.

Here's a video: http://www.metacafe.com/watch/319186/airplane_accident/

If my memory serves me right that would be good ole LN-BRI with #2 engine
fresh from the "shop".

[chevvron]

Used to happen with Britannias virtually every start cycle.

[Sheep fancier]

I eventually found a pic of what I was looking for -
http://www.jetphotos.net/viewphoto.p...5917959&nseq=0
It looks rather nasty but I'm assured whilst it's not common these days there is no real danger.
SF