Climb Limit Weights
Joined: Jun 2004
Posts: 1,843
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From: Australia
The "Approach Climb" is essentially for the configuration that you would set the aircraft to if a missed approach was carried out during approach, i.e. Gear UP and the Flaps retracted to the "Go-Around" setting, typically a setting routinely used for Takeoff. With OEI, the minimum Gross Gradient is 2.1% (Note that PANS-OPS minimum obstacle-clear gradient is 2.5%, be careful!)
The "Landing Climb" is with ALL engines operating in the Landing Configuration, i.e. Gear DOWN" and Flaps left at the Landing Flap setting. Minimum required gradient is 3.2%.
In Short, Approach Climb is intended to cover you for a 1 Engine Inoperative Missed Approach, and Landing Climb for the All engines missed approach. (There's a bit more to it than that, but that's the basics).
Regards,
Old Smokey
The "Landing Climb" is with ALL engines operating in the Landing Configuration, i.e. Gear DOWN" and Flaps left at the Landing Flap setting. Minimum required gradient is 3.2%.
In Short, Approach Climb is intended to cover you for a 1 Engine Inoperative Missed Approach, and Landing Climb for the All engines missed approach. (There's a bit more to it than that, but that's the basics).
Regards,
Old Smokey
Joined: Jun 2005
Posts: 1,420
Likes: 1
From: AEP
My notes from long ago...
Sorry - old fart here - but yes, I remember the approach climb is always the limiting factor.
This with 2, 3 or 4 motors. I did not study requirements for planes with 5...
Balked landing climb is not limiting.
xxx
Happy contrails
This with 2, 3 or 4 motors. I did not study requirements for planes with 5...
Balked landing climb is not limiting.
xxx
Happy contrails
Joined: Jun 2004
Posts: 1,843
Likes: 0
From: Australia
BelArgUSA got it right, no further comment necessary 
(Mind you, the law of "Stating things categorically" dictates that somewhere "out there", there's a weird aircraft where the Landing Climb MIGHT be more limiting, but like my "old fart" colleague, I can't think of any
Regards,
Old Smokey
(Mind you, the law of "Stating things categorically" dictates that somewhere "out there", there's a weird aircraft where the Landing Climb MIGHT be more limiting, but like my "old fart" colleague, I can't think of any
Regards,
Old Smokey
Joined: Sep 2002
Posts: 2,188
Likes: 6
From: La Belle Province
How about a fixed UC aircraft, where both approach climb and landing climb have the drag of the UC? Then it depends if the drag saved by retracting to the approach flaps is more than the power lost by a single engine loss?
