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View Full Version : A320: difference between LEAP-1A and CFM56-5B4


boxhauler767
29th Mar 2021, 18:23
Hello

Can any Airbus experts briefly explain the differences, if any, pilot-wise, between the LEAP-1A engine and the CFM56-5B4 ?

Any major difference if one gets trained in a simulator with the CFM56 and then flies a LEAP-1A in real life?

Thank you

Cak
29th Mar 2021, 21:03
Not really......
Engine start sequemce is a bit different and some limitations

Check Airman
29th Mar 2021, 23:06
1. The new engine takes longer to start

2. Normal law blending between flight and ground modes changed slightly

3. Airbus got rid of the cell phone holders :mad:

Otherwise, same plane. Not sure why they bothered to change the ATC designation.

lomapaseo
30th Mar 2021, 01:49
fuel burn?
FADEC (sic) ?
Instrument messages?

Roj approved
30th Mar 2021, 11:12
1.
3. Airbus got rid of the cell phone holders :mad:.

Nooooooooooooooooooooooo😩
No more ashtrays ??

Checkboard
30th Mar 2021, 19:48
Quieter on take off and climb. Cruise and descent noise is mostly airflow noise, so is about the same.

The LEAP engines look cooler - and you can see through them.

lomapaseo
30th Mar 2021, 22:04
is this before or after the blades get knackered

Max Angle
31st Mar 2021, 22:13
Don't worry "you can go"

FlightDetent
1st Apr 2021, 02:02
Some say that chopping the thrust has stronger effect compared to the original, requiring an adjustment in flare technique. This would be more pronounced against the IAEs, however.

​​​​​​On top of that the pitch down THS below 27 ft is no longer there...

I realized trying to figure out and cope against the various handling characteristics probably distracts me from making the plane do what I need it to. Comparatively best results achieved by just flying the thing without much thinking at all.