"...a formula for penalites using slope for both landing and takeoff for non routinely used airports."
Thanks.
One would assume that those penalties are predicated on approved landing data.
I just ran an analysis for 10-28 at CLE for my Dassault trimotor (F900EX).
The limiting weights (wet) are the identical in both directions, so I am inferring that the absence of OEM-provided corrections for slope is at the root of the dilemma.
AC 25-7A doesn't require much in the way of published landing data - obviously, the following directly states "as a minimum":
g. Airplane Flight Manual Landing Distances.
(l) As a minimum, the AFM must include data for standard temperature and zero runway gradient showing the variation of landing distance with weight (up to maximum takeoff weight), altitude, and wind. If the airplane is intended for operation under Part 121 of the FAR, the distances presented should include the operational field length factors for both dry and wet runways required by § 121.195.
Does anyone know if the E-170 performance data includes corrections for slope?
How unusual is the case of the F900 performance data not providing corrections for slope?