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DarkMale327
4th Apr 2015, 21:51
Hey guys, I've been searching the forums for an answer to my question, but there doesn't seem to be a "definitive" answer available.

In AMC2 CAT.POL.A.225 it's written that:
"For instrument approaches with a missed approach climb gradient greater than 2.5%, the operator should verify that the expected landing mass of the aeroplane allows for a missed approach with a climb gradient equal to or greater than the applicable missed approach gradient in the OEI missed approach configuration and at the associated speed."

Also, from our OM-A it is stated that "The mass of the aircraft shall not exceed the mass which allows an one engine out missed approach (approach configuration) gradient of at least 2.5%, unless a higher gradient is required by the airworthiness requirements or by the published missed approach procedure for a specific runway."

I can't seem to find any reference as to whether these are GROSS or NET climb gradients? The only reference to a NET climb gradient I can find is for take-off climb gradients.

Sorry for the long post, and thanks in advance for your replies!

B737900er
5th Apr 2015, 10:40
Its GROSS.

DarkMale327
5th Apr 2015, 12:20
Thank you!

MD80rookie
5th Apr 2015, 14:05
From memory, Net performance of airplanes is factorized to give Gross performance meaning that Gross performance has a safety factor to account for the average pilot, flying the average airplane in the fleet on an average day.

Measured performance is that demonstrated by highly skilled test pilots (i.e. not me at least :})

VinRouge
5th Apr 2015, 15:52
Measured --> Factored ----> Gross ----> factored -----> Net

Good explanation here:

http://www.atpforum.eu/showpost.php?p=45922&postcount=2

Don't forget the visual baulked requirement too

DarkMale327
5th Apr 2015, 21:28
Thanks for all the replies guys!