1977 P337 Skymaster with Gross Wt increase to 5120 lbs, wing extensions, 40 gallons aux fuel tanks, winglets and large Tail boom fairings. Wing span = 44’6”
1979 T337 with Rocket Winglets and Medium Tail Boom Fairings.
2008 P337 Skymaster
Increase from 450 to 700+ hp
Useful load increase of ~500 lbs
(1040 lbs for ferry flights)
Gross weight Increase of 700-1240 lbs
Up to 408 Gallons fuel capacity
Up to 2500 mile range
350 lbs increase useful load increase and 10% overall increase in performance with wing extensions. a fuel jettison system is required for the weight increase.
