Calculating DOC (Direct operating cost).


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Direct Operating Cost per hour (excluding fuel):

DOC = (Total Enginepower) * D-Factor

Power D-Factor
HP or lbs excl fuel
0 - 1000 0,34
1001 - 2500 0,24
2501 - 5000 0,14
5001 - 15000 0,08
15001 - 30000 0,04
30000 - 0,02

The value in the Power column is total power (all engines together) for the aircraft;

EXAMPLES:

DOC excl. fuel for PC-12:
TEP (Total engine power) = 1200 HP
D-Factor = 0,24

DOC = 1200 * 0,24 = $ 288 / h

DOC excl. fuel for C-119:
TEP (Total engine power) = 7000 HP
D-Factor = 0,08

DOC = 7000 * 0,08 = $ 560 / h

DOC excl. fuel for 737-300:
TEP (Total engine power) = 44000 HP
D-Factor = 0,02

DOC = 44000 * 0,02 = $ 880 / h