07/20/2026. Remarks by Johan Visschedijk: "The P-5 Hawk (Model 34L) was similar to the P-1A except that it was fitted with a side-mounted turbo-supercharger on the 435 hp Curtiss D-12F twelve-cylinder liquid-cooled V-engine (military designation V-1150) for improved altitude performance. Service ceiling was 31,900 ft (9,723 m) compared to the 21,350-ft (6,507 m) absolute ceiling of the P-1A. Further development was curtailed by adoption of the larger V-1570 Conqueror engine for Army Hawks.

(Bill McBride Collection)

Only five P-5s were built, serialed 27-327 to 23-331."

Span: 31 ft 6 in (9.6 m)
Length: 23 ft 1 in (7.03 m)
Height: 9 ft 0 in (2.74 m)
Wing area: 252 sq.ft (23.41 sq.m)
Empty weight: 2,551 lb (1,157 kg)
Loaded weight: 3,340 lb (1,515 kg)
Max speed: 171.8 mph (276.48 kmh) at 20,000 ft (6,096 m)
Cruise speed: 115 mph (185.07 kmh) at sea level
Climb: 1,250 ft (381 m)/min
Service ceiling: 31,900 ft (9,723 m)
Range: 310 miles (499 km)