Managing a departure with a performance limited takeoff can be one of the more challenging tasks that face the Captain of an aircraft today. It all sounds simple enough in theory. Based on the Airport/Runway, Ambient Weather Conditions and Aircraft, a computer will spit out down to the kilogram how much weight you’re allowed to lift off the runway. From this number a passenger/cargo and fuel load is determined – and off you go. But all is not as it seems.





![coldtemp12 Cold Temperature Altimetry Corrections [Corrected 26Jun17]](https://www.infinidim.org/wp-content/uploads/2016/11/ColdTemp12.jpg)







