PMDG 737NGX 0.00.45
TUTORIAL #2
For Simulator Use Only DO NOT DUPLICATE 27FEB15 RTM
Now we can calculate our alternate trip fuel:
Subtract the predicted fuel at EDDM - 2200 lbs (998 kg) from the
PROG page’s predicted fuel at LOWI - 3200 lbs (1451 kg).
3200 lbs - 2200 lbs = 1000lbs alternate trip fuel
(1451 kg - 998 kg = 453 kg alternate trip fuel)
Contingency fuel:
This is a legal 5% requirement for the alternate as well.
1000 lbs * 0.05 = 50 lbs contingency fuel
(453 kg * 0.05 = 23 kg contingency fuel)
Hold fuel:
It’s also a legal requirement that we carry fuel to account for 30
minutes in a holding pattern during the diversion to EDDM.
Holding uses around 84 lbs (38 kg) an hour. This assumes best
hold speed at 1500 feet above ground level.
30 * 84 lbs = 2520lbs hold fuel
(30 * 38 kg = 1140 kg hold fuel)
Our total alternate diversion route fuel requirement thus is:
1000 lbs + 50 lbs + 2520 lbs = 3570 lbs alternate diversion
route fuel
(453 kg + 23 kg + 1140 kg = 1616 kg alternate diversion route
fuel)
We can now calculate the total by adding the two parts of the route
together:
12196 lbs + 3570 lbs = 15766 lbs
(5527 kg + 1616 kg = 7143 kg)
Round up to the nearest 100lbs or kg and we have 15800lbs
(7200 kg) total to load.
On the captain’s CDU, press MENU, then FS ACTIONS, then
FUEL.
Enter 15800 (7200 kg) into the TOTAL LBS field at LSK 1L.
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