Ignition , A319's
Guest
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In our books it says to turn it on before take-off if heavy rain or turbulence is expected. Other than that you turn it on during single engine flight to protect the remaining engine. It is selected on by the FADEC when engine anti-ice is on and also when the flaps are extended which activates approach idle mode on the engines.
Guest
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Hi Max :
Our POH shows in addition from what you mentioned to turn ignition ON if the runway is covered with standing water , or if heavy rain or severe turbulence is expected during approach or go-around.
The severe turbulence procedure in the supplementary techniques does not include ignition to ON .
So lets say you took off expecting turbulence , ignition selected ON in order to keep it on after flap retraction I guess , and maybe as a back up for the auto selection when the flaps where dawn , or ???
Now when do they expect us to turn it off and why ?
As I said , the severe turbulence procedure does not call to have it on .
It's been ignition ON when in rain for my past 30 years on other aircrafts , this FCOM's talks about it only related to departures and arrivals . Why ?
Max ? Anyone ?
[This message has been edited by basics52 (edited 19 May 2001).]
Our POH shows in addition from what you mentioned to turn ignition ON if the runway is covered with standing water , or if heavy rain or severe turbulence is expected during approach or go-around.
The severe turbulence procedure in the supplementary techniques does not include ignition to ON .
So lets say you took off expecting turbulence , ignition selected ON in order to keep it on after flap retraction I guess , and maybe as a back up for the auto selection when the flaps where dawn , or ???
Now when do they expect us to turn it off and why ?
As I said , the severe turbulence procedure does not call to have it on .
It's been ignition ON when in rain for my past 30 years on other aircrafts , this FCOM's talks about it only related to departures and arrivals . Why ?
Max ? Anyone ?
[This message has been edited by basics52 (edited 19 May 2001).]
Guest
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MAX , I agree that the auto ignition on this engines makes a difference , this could very well be the reason , good point.
Departures and arrivals will most likely put the engines in a more vulnerable condition for flameouts due to maneuvering at slow flight speeds combined with changing compressor speeds . This may also be part of the equation for them to mention Ignition ON when WX dictates during this flight phases.
ZEKE
I have never yet experience a real engine flame out .
My eng out cases on jet aircrafts have been oil seal related events. ( 4 )
There is no question in my mind that Ignition will remain ON after a relight if the WX/ash conditions creating the flameout persist !! Even maybe if they are no longer present , it would really depend I guess .
Thank you both , hope to hear more inputs for this speciffic Airbus topic.
Guest
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49er
That's new for me, A 320's without auto ignition .
Could you provide a little more detailed information on the criteria used as to when to switch it ON for such aircrafts ? Guess it's not only due to heavy rain or ?
Do you all use the IAE engines ?
Guest
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Basics - sorry I cant give u much info abouit the 320's as I dont fly those (only the 319 in my fleet). Basically we turn the igniters on in those conditions where historically the pilots would have had to anyway - standing water on runway, heavy rain, severe turb etc. Just an airmanship thing I guess - I trust the Airbus an awful lot, but Im not sure how good a glider it is 
Guest
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49er selects ignition on his 319 just like in any previous aircraft from what I understand.
Looks to me that is not the way airbus wants this to be done yet I can understand 49er's point of view .
FCOM's do not require ignition to be On for example due to severe turbulence or heavy rain during cruise flight , only for departures and arrivals .
Could anyone else explain his company procedures and personal thoughts on this ?
Is auto ignition really that good as for not having to manualy switch it on during heavy rain at say climb , cruise or descend ?
Looks to me that is not the way airbus wants this to be done yet I can understand 49er's point of view .
FCOM's do not require ignition to be On for example due to severe turbulence or heavy rain during cruise flight , only for departures and arrivals .
Could anyone else explain his company procedures and personal thoughts on this ?
Is auto ignition really that good as for not having to manualy switch it on during heavy rain at say climb , cruise or descend ?
