Originally Posted by
Denti
Well, Flex or Assumed Temperature is not allowed. However, derated thrust settings, if available, are allowed and may allow an increased performance limited TOW. However, one has to be careful during training to make sure that pilots understand that increasing thrust above the derate could lead to serious control issues.
Exactly so. Under the 'right' environmental conditions on the 'right' contaminated runway a B744F could have a higher RTOW with TO2 than TO as the Reference Thrust.