Unknown mass
I am an electronic engineer, and look after equipment calibrations as part of my job. Yesterday I flew out of Fuerteventura, and noticed that the baggage weighing machine was not 'tare'd before my luggage was put on, reading -12.5Kg with nothing on there. I thought at the time that it was a bit stupid of the designer not to put an auto-tare sequence into the software, and thought no more about it. It was only today that I realised that there must have been a huge amount of extra weight that the aircraft was having to haul off the ground in that heat. I did some quick sums, and came up with about an extra 2.5 tonnes. The temperature was +28 degrees C. I was just wondering what kind of effect that would have on the 757-200 that we were on (I only fly PA-28s, so can't judge). I was also wondering what would happen to an aircraft with a little less performance, losing an engine just after V1, with an extra tonne or so on board?
Just curious.