Naval Aircraft Factory PN - Variants

Variants

PN-5

Redesignated Felixstowe F5L

PN-6

Redesignated F-6L. Last two Naval Aircraft Factory F5Ls, modified with revised tail surfaces.

PN-7

Modified version with new wings with high lift thick aerofoil section and reduced wingspan (72 ft 10 in compared with 103 ft 9 in). Powered by two 525 hp Wright T-2 engines.

PN-8

PN-7 with metal hull. Powered by two 475 hp Packard 1A-2500 V-12 engines. Two built

PN-9

Converted from PN-8 with redesigned engine nacelles. One converted.

PN-10

Similar to PN-8. Powered by two 500hp Packard 1A-2500. Two built.

PN-11

New hull eliminating sponsons. Four built, one with two Pratt and Whitney R-1690 Hornet engines, and remaining three powered by two Wright R-1750 D Cyclone. Last three later re-designated XP4N.

XPN-11

One prototype, fitted with twin vertical tail surfaces.

PN-12

Development of PN-10 powered by radial engines. Two built. One powered by two Pratt and Whitney Hornet engines, with the other powered by two Wright R-1750 Cyclone engines.

Douglas PD-1

Developed production version of PN-12. Two 575 hp Wright R-1750 Cyclone engines. 25 built by Douglas.

Keystone PK-1

Production version of PN-12. Twin tails. Two 575 hp Wright R-1820 Cyclone engines. 18 built by Keystone.

Martin PM-1

Production derivative of PN-12. Two 525 hp Wright R-1750 Cyclone engines. 27 built for US Navy by Martin.

Martin PM-1B

Export version of PM-1 for Brazil. Three built.

Martin PM-2

Improved derivative of PM-1 with more powerful Wright R-1820 Cyclone engines and twin tails. 25 built.