[SkyKing]

First off, the mission capabilities of a normally aspirated 337G would be most difficult at 15,000', as these units are not equipped with oxygen and they are normally aspirated.

Even with the dual centerline thrust TCM IO-360's, the airplane's Service Ceiling is 18,000' with both mills turning. Front engine only is 6,900' and with the rear only, 7,100'.

Cruise configurations for the 337G (1977 model year) using recommended lean mixture with fuel allowance for engine start, taxi, takeoff, climb, 45-minutes reserve at 45% and descent will net the following:

75% power @ 5,500' with 528 pounds of fuel: 545nm/3.3hrs

75% power @ 5,500' with 888 pounds of fuel: 990nm/5.9hrs

MAX Range at 10,000' with 538 pounds of fuel: 670nm/5hrs

MAX Range at 10,000' with 888 pounds of fuel: 1,235nm/9.3hrs

Takeoff at full gross: 1,000'; over 50' obstacle: 1,675'
Landing ground roll: 700'; over 50' obstacle: 1,650'

Stall speed: (CAS)
Flaps up, power off: 70 knots
Flaps down, power off: 61 knots

Rate of climb @ sea-level: 1,100 FPM

MAX WT:
Takeoff - 4,630 lb
Landing - 4,400 lb

Standard Empty WT: 2,790 lb; Skymaster II: 2,913 lb

SkyKing