PPRuNe Forums - 2 flames out on Airbus?

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hey guiones...

Sorry, don't agree...

The OFF then ON cycling of the Start lever(s) needs to be fairly quick...

No more than approx. 1 second in the CUTOFF position.

Cheers...FD

F D:

You made me pull out the FCOM.

FCOM 3.2.70 ENG DUAL FAILURE

"ENG MASTERS.................................OFF 30S/ON
Engine masters must be left OFF for 30 seconds to allow ventilation of combustion chamber."

It also says that before bleed assisted start to do the 30 seconds OFF.

BTW same applies to the A330.

G

Perhaps there are two different issues being discussed here. :confused:

One is a condition where the engine has either flamed out or been shutdown at altitude and is being restarted by SOP.

The other (which I spoke about) is where the engine EGT goes up into the red while the N2 fails to acclerate at all.

The later case is indicative of a engine hung in a stall condition.

At any rate remember if you allow the N2/N3 to get too low for any reason then an air start is not possible without assistance. In an all engine out the roll off of N2/N3 below starting conditions is most often associated with the pilots desire to configure for maximum glide Lots of things on your mind when you are a glider.