LSM,
“Quote:
Given that Flybe limit the MTOM presumably to reduce nav charges, it's not really such a ground-gripper, is it?
Never said it was.”
I guess I must have misinterpreted your earlier post:
“RJ, trouble is the 175 performance from SOU is sadly lacking, to be kind about it. It's going to struggle to get as far as the Dash with a similar load!”
To do the numbers…..
From your post #88:
“Ignoring the QNH today because I don't know what it was the RTOM at 10C is a gnats cock under 34 tonnes.
Flybe MTOM is 34,999kg. APS is 22,500kg give or take. Max total pax is 88.
88x90 (for cash) = 7920
+ 22,500 = 30,420kg giving you a smudge over 3.5 tonnes of fuel. Enough for Nice? No. That'll probably do you for a Bergerac (maybe) and getting close to an EDI from SOU.
Wait until it gets hotter!”
Let’s just re-work that for RTOM 34,999kg at 28C still air 1013HPa.
34999 – 30420 = 4579 call it 4.5 tonnes for cash.
So, 4.5 Tonnes at 28C, not 3.5T at 10C.
To compare to the D8:
Typical APS 18200 Max pax 78 – x 90kg = 7020 gives a ZFW of 25220kg
Now, at 10C in calm conditions with QNH of 1013 on rwy 20 at SOU the D8 has RTOM of 28727kg, giving a max fuel load of…..3507kg
Bump the temperature up to 28C and you have RTOM of 27850kg, giving a max fuel load of….2630kg
The E175 max fuel load would be 4500kg in either case…..sure, the fuel burn is higher, but not THAT much higher!
Perhaps a better way to look at the 175 would be to say that with an 80% load (70 pax) it can carry about 6000kg of fuel off 20 at SOU in calm conditions on a 30C day.
That takes you a long way into Europe if you put it on a higher yielding route.
The EFB performance app is excellent. It also allows the use of flex in icing conditions. I think the payback time for the ipads will be quite short.