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Flop's Flameout

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Choppy

Well-known member
Joined
Oct 6, 2005
Posts
189
Does anyone know what the story was with the most recent dual flameout over Florida? That one got kind of pushed up under the rug!
 
It's not pushed under the rug, it's on the NTSB website as under investigation. Company has a new procedure for boost pumps and engine anti-ice on at TOD. NTSB said to be concentrating on environmental factors, not fuel.
 
guido411 said:
It's not pushed under the rug, it's on the NTSB website as under investigation. Company has a new procedure for boost pumps and engine anti-ice on at TOD. NTSB said to be concentrating on environmental factors, not fuel.

So you are telling me that the engine heats come on at TOD no matter what the conditions???? If that is so, it sounds like a knee jerk reaction of the first order??? How is that going to help anything if you are flying along in clear air??? Or is there more to the story?????
 
funny thing is the engine heats are only suppose to be put on below 90%n1, and at cruise your above 90%n1, so you have to pull back the power to turn on the heats. And in both glider incidents the motors quit at throttle retard.
 
why would you pull the throttles back to idle anyway just to put on engine heat?
 
RNObased said:
So you are telling me that the engine heats come on at TOD no matter what the conditions???? If that is so, it sounds like a knee jerk reaction of the first order??? How is that going to help anything if you are flying along in clear air??? Or is there more to the story?????

RNO,

Good assesment, "knee-jerk" is the tradional Flight Options reaction, and yes, EVERY TOD when above FL300 for more than 30 mins is what the mandate says. I can't say it hurts to put the boost pumps on, or the ignitors for that matter. So besides burning up more ignitors I guess it's no skin off my back.

qblzr said:
=why would you pull the throttles back to idle anyway just to put on engine heat?

Not back to idle, limitation of the BJ is to have the power at 90% N1 or less before turning engine anti-ice on. It protects the barrier layer of air inside the burner can that insulates really hot fire from the metal of the combustion chamber. If the anti-ice is turned on with the power high it can disrupt the air boundary due to more bleed air leaving the engine.
 

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