Hooded
Provide that the aircraft is configured for landing (gear down and a landing flap selected) then the GPWS input from the radalt invalid and you could land in a field without getting a terrain warning, with EGPWS you need to be landing on a runway that is in its data base, probably not Bagby!!
At present the RADALT reads about 520ft AGL at the lowest point on the approach to 14 (the highest ground at any given point) so i would guess that at say a 3.2 slope then it would give you about 450ft, no doubt someone can do the math. not a lot i agree but we often cross roads near airports at far less, it will just make it that bit easier for the folks up at the royalty to hit us with fireworks!!
I wouldn't recommend hand flying the approach in IMC but for a fully coupled approach it shouldn't be a problem.
Haven't heard about 757's for Jet2 would make sense for their cargo ops, not sure about pax's but with JET2 approach to low cost you never know? who knows it could be Cairo for £19.99 all in.
Cheers
Burt
time to take the dog for a pint