Yep, V2/V1 ratio it was, then
In the 73 QRP, I find three different tables for "Max allowed temp derate (25%)", one for 23,5K, one for 22K and one for 20K - so it's gotta be assumed temp only for that limit.
Would you know
why the 25% limit came about? Changes in rudder forces when full thrust was selected after EFATO - or???
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