Flight planning question
Can any one help me with this question?
Planning a flight from Paris-London for a twin-jet aeroplane. Preplanning: MTOM = 62,800kg MZFM = 51,250 MLM = 54,900 MTM = 63,050 Assume the following Trip fuel = 1,800kg Alternate = 1,400 Holding fuel (final reserve) = 1,225 DOM = 34,000 Traffic load = 13,000 Catering = 750 Baggage = 3500 Find the take-off mass. Answer given as 51,515 kg The answer that I keep on getting is 51 425kg, which is one of the answers given. I'm working it out as follows DOM+Traffic+Trip fuel+Alternate+Holding = 51,425 kg Where am I going wrong? Thanks for your help. |
You've forgotten to add contingency fuel. 5% of 1800 is 90 kg. Add that to your total and you get the right answer.
You can't ignore contingency fuel. You are required by law to carry it. Even if it's not mentioned in the question, you're supposed to add it automatically. |
Doh :O ! I'll know for next time.
Thanks |
Muppet ;)
"I am not ignorant as I do know 'Just Another Student' well - we all do make mistakes" :E |
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