gofor
With an average minimum temperature during the hottest time of the year of 14°C, you could expect the temperature to be around 20°C by the departure time of 8:40pm. A quick look at an RTOW for one of our 777-300ER’s out of JNB reveals a max ATOW of 320.3T for RWY 21R (up hill), 20°C, 1013, 0 Wind, F15, Packs Off or APU to Packs, Alt CG ≥ 31.2% and TO Bump. The max structural TOW for our ER’s is 351.53T so there is still quite a weight penalty (31.23T) to be suffered at this time of the day. If you compare this to one of our 400’s with the same conditions the weight penalty is about 22T’s.
Last edited by 404 Titan; 2nd October 2009 at 01:39.