Loening OL Amphibian

1st Flight 1923

The Loening OL, also known as the Loening Amphibian, was an American two-seat amphibious biplane designed by Grover Loening and built by Loening for the United States Army Air Corps and the United States Navy.

Variants

XCOA-1

Four prototypes powered by 400-hp V-1650-1 engines, three later to COA-1

COA-1

Three prototypes and nine production aircraft for the Army Air Service

OA-1A

Army production aircraft with redesigned vertical tail and powered by a 420-hp, water-cooled Liberty V-12 engine that was mounted inverted, 15 built.

XOA-1A

One prototype with a single retractable main wheel and skids fitted to wing floats, powered by an inverted V-12 Wright Typhoon, redesignated XO-10 before delivery in 1929

OA-1B

Same as an OA-1A with a water-cooled V-1650-1 engine, nine built

OA-1C

OA-1B with redesigned fin and rudder, ten built

OA-2

OA-1C with 480hp Wright IV-1460-1 engine modified tail surfaces and forward-firing machine gun moved to port upper wing, eight built

XO-10

One XOA-1A redesignated before delivery by the U.S. Army

OL-1

Naval version with third cockpit, two prototypes powered by a 440-hp Packard 1A-1500

OL-2

Naval version similar to the COA-1, five built

OL-3

OL-1 powered by a 475-hp Packard 1A-1500 and other detail changes, four built

OL-4

OL-3 powered by a 400-hp V-1650-2 engine, six built

OL-5

Three of these were built for the U.S. Coast Guard in 1926.

OL-6

OL-3 with a redesigned vertical tail as OA-1C, 28 built

XOL-7

One OL-6 fitted with experimental thicker wing

XOL-8

One OL-6 re-engined with an air-cooled 450-hp Pratt & Whitney R-1340-2 radial engine

OL-8

As XOL-8 with two cockpits and a 450-hp R-1340-4 engine, 20 built

OL-8A

An OL-8 fitted with arrestor gear, 20 built

OL-9

An OL-9 with equipment changes, 26 built

XO2L-1

An improved version of the OL-6, prototype only

XO-37

A development of the OA-2 with a 200-hp R-1340-0 engine, project cancelled

Specifications

Crew: two

Length: 34 ft 9 in (10.59 m)

Wingspan: 45 ft 0 in (13.72 m)

Height: 12 ft 9 in (3.89 m)

Wing area: 504 sq ft (46.82 m2)

Empty weight: 3,649 lb (1,655 kg)

Gross weight: 5,404 lb (2,451 kg)

Powerplant: 1 × Pratt & Whitney R-1340-4 Wasp air-cooled radial piston engine , 450 hp (336 kW)

Performance

Maximum speed: 122 mph (196 km/h, 106 kn)

Range: 625 mi (1,006 km, 543 nmi)

Service ceiling: 14,300 ft (4,360 m).

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