PPRuNe Forums - FLEX TEMP

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jcbourne

14th August 2013 13:26

FLEX TEMP

What is the minimum acceptable flex temp for the a320?

Lord Spandex Masher

15th August 2013 06:57

Minimum? Or Farhenheit?

compressor stall

15th August 2013 08:59

And which engines.

gAMbl3

15th August 2013 12:12

Flex temp cannot be lower than T ref or OAT.

Jwscud

15th August 2013 12:43

A large number of engines are flat rated up to ISA+15 so it is only above that temperature that you get thrust reductions when using assumed temperature/flex/whatever. This is certainly the case with the CFMs.

Cough

15th August 2013 13:41

Our 319's with IAE's are flat rated to ISA+40, max flex temp is ISA+65...

de facto

25th August 2013 04:10

Quote:

Our 319's with IAE's are flat rated to ISA+40, max flex temp is ISA+65...

OP is talking about minimum Flex.
Have a loook at your fcom...and look. for MINIMUM ASS or FLEX temp.

The Fmc wil not allow you to enter a flex temp that would calculate a thrust setting higher than your max thrust rating(if you use derate,max thrust for your derate) for actual OAT and PA.

The engines are rated at Sea level and isa+15c, so at sea level your min flex should be about 30c.

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