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A320 Single Engine Missed Approach

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A320 Single Engine Missed Approach

Old 29th Apr 2023, 20:34
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Thank you Sonicbum

Hi JABBARA

it must be a typo but the LCG is never limiting. Probably You meant ACG
You are right I mistakenly wrote LCG, I corrected it as ACG (Approach Climb Gradient)


Flysmart does have an option to select the required GA gradient and the target altitude until it is required. In that case I believe the results do take care of varying conditions as you have detailed.
That is right if available,
In our FSA there was no such a calculation
The only one on FSA was based on to meet requirement as in EASA CS 25.121 Climb: one-engine-inoperative (d) (1),
If the entered landing weight for given landing condition (including selected CONF) was too much to be able to meet a momentary 2.1 % with single engine + APP Flap + L/G UP, further landing parameters are not calculated.

However the way you describe is not clear for me, if you enter a standart Missed approach gradient (2.5%) up to 4000 from SL GA, what does it calculate?
Does FSA calculates a max weight, so that at given conditions, when airplane reaches 4000 feet, reducing gradient as ascending finally hits down to to 2.5% ?

Last edited by JABBARA; 29th Apr 2023 at 23:29. Reason: Changed GA flap with APP flap
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Old 29th Apr 2023, 21:50
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Originally Posted by JABBARA
Thank you Sonicbum


You are right I mistakenly wrote LCG, I corrected it as ACG (Approach Climb Gradient)



That is right if available,
In our FSA there was no such a calculation
The only one on FSA was based on to meet requirement as in EASA CS 25.121 Climb: one-engine-inoperative (d) (1),
If the entered landing weight for given landing condition (including selected CONF) was too much to be able to meet a momentary 2.1 % with single engine +GA Flap + L/G UP, further landing parameters are not calculated.

However the way you describe is not clear for me, if you enter a standart Missed approach gradient (2.5%) up to 4000 from SL GA, what does it calculate?
Does FSA calculates a max weight, so that at given conditions, when airplane reaches 4000 feet, reducing gradient as ascending finally hits down to to 2.5% ?
Have a look at
about the computation strategies of the flysmart, I really find it interesting.
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Old 29th Apr 2023, 23:28
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Thank you Sonicbum,
Nice video
Although in some specific cases performance engineer interference is needed, I understand this added future of FSA is very helpful


Note When I was watchin video, I remembered ACG is calculated for approach flap, not GA flap, so have corrected it
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