Three P-2s were subsequently converted to P-1A standard for squadron service. A fourth was fitted with the Curtiss V-1570 Conqueror engine of 600 hp as the XP-6 to participate in the 1927 National Air Races, in which it placed second, achieving 189 mph (304 kmh).
Note: The probe seemingly fitted to the propeller is in fact a long boom (part of test equipment) fitted to the bracing strut of the left wing, not to the propeller.
Span: 22 ft 10 in (6.96 m)
Length: 22 ft 10 in (6.96 m)
Height: 8 ft 7 in (2.62 m)
Wing area: 250 sq.ft (23.23 sq.m)
Weight empty: 2,081 lb (944 kg)
Loaded weight: 2,869 lb (1,301 kg)
Max speed: 172 mph (276 kmh) at sea level
Climb: 2,170 ft (661 m)/min."
Read the type remarks on page 11581.