Different TOFL and V-speeds for the same FLEX N1 target

[Rodeo]

Example, for an OAT of +5°C:

• assumed temperature of +45°C already gives apparent "maximum reduction" for FLEX (N1 target 85.0%)
• increasing the assumed temperature to +50°C gives the same N1 target of 85.0% as the above…
  • but V-speeds (here, V1) and especially required takeoff distance differ:

…that over 100m of runway, which seems like a lot if it were caused by e.g. rounding (say, N1 target of 85.04% at FLEX 45 vs. 84.96% at FLEX 50)?

It kind of looks like, possibly, the assumed temperature of +50°C initially results in an N1 target lower than 85.0 which then gets sanitized to a minimum target, but TOFL and V-speeds are based on the invisible, unbounded N1 target instead?

Regards,

Tim

@Graeme_77

[sunake]

I've noticed this too and was going to make a post, so I'll just +1

[Rodeo]

Ping?

Regards,

Tim