CL-604 flex
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Join Date: Mar 2007
Location: hungary
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CL-604 flex
Dear Pro's,
1. Could anyone please explain why the CL604 doesn't have a flex/reduced/derated takeoff possibility?
2. The CL604's CF34-3B engines has a normal takeoff (APR not activated) ITT limit of 884 C for the last 3 min out of 5 per the AFM. However, the max cont (MCT) ITT limit is 900 C. So, the MCT is ITT is higher than the T/O ?? Any explanation to this phenomena?
3. Do you transfer routinely to APU bleed for every landing? Or only when hot & high?
Appreciate your inputs.
balaton
1. Could anyone please explain why the CL604 doesn't have a flex/reduced/derated takeoff possibility?
2. The CL604's CF34-3B engines has a normal takeoff (APR not activated) ITT limit of 884 C for the last 3 min out of 5 per the AFM. However, the max cont (MCT) ITT limit is 900 C. So, the MCT is ITT is higher than the T/O ?? Any explanation to this phenomena?
3. Do you transfer routinely to APU bleed for every landing? Or only when hot & high?
Appreciate your inputs.
balaton
Join Date: Sep 2002
Location: La Belle Province
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If you check the N1/N2 limits you'll see those tell a similar story - MCT N1 is 98.6%, while Normal Takeoff is 96.2% - but Max Takoff (i.e. with APR) is 98.6%, the same as MCT.
3. Do you transfer routinely to APU bleed for every landing? Or only when hot & high?
We do use runway analysis by APG for T/O and Landing.
With regards to flex, available on the GLEX, but certified flex power on the CL604 will require money down, I suspect.
I don't work in Le Belle Province, but rather close, BTW.
GF
Nice answer MfS, i've wondered the same thing-how MCT is greater than TO? I always assumed the flat rating was os great the engine essentially ran at MCT or less all the time.