I'm beginning to suspect that the Airbus "Reduced Flexible Thrust" procedure may have had a role in A340 white knuckle takeoffs. While input of aircraft gross weight should be somewhat straightforward, other variables such as actual temperature wind etc. may be more complex. How sensitive is the Flex Thrust program to input errors? What percentage of maximum thrust available (TOGA) was being used in the Bogota takeoffs?
Cheers,
Grog