but company SOP is F3 unless F full is required.
these companies will be sued if accident happen. Normal configuration is Full flaps for landing.
SOP must be full flaps unless F3 is required. that's the correct procedure. Not the reverse. I think some airlines think they save money, less flaps=less drag=less fuel...
ok, but you get less lift=more power to get same amount of lift=more fuel
I doubt you save money with F3.
same thing with N1 taxi to your gate:
1 engine taxi =less power= less fuel(airline thinking!)
ok,...but 1 engine=more power on the engine=more rudder and steering to turn due to asymmetric thrust = more fuel(airbus thinking)....
conclusion: to save real money, follow airbus procedures
.
if an airline was saving money with their "new" procedure, all airlines would do the same.
They don't, so when I hear of a new SOP procedure, we can just laugh at it!