rat5. For the bar room debate: Here's what moving away from the paper charts does for you.
Actual figures taken off our system for B737 300
I should add the figures don't fill me with glee but they are what they are.
LKPR RW 24
30C wet
QNH 1000
Wind calm
53000kg TOM
Derate to 20k thrust
39deg ass temp
Flap 1
V1 127 Vr 145 V2 151
And strangely enough when I look at fixing the flap at 1 with Improved climb selected I get same derate, a higher assumed temp and a V1 of 142. So.... in the original case the V1 figure of 127kt looks ... erm.... low.
I look forward to the bar room debate