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Columbia XJL

The Columbia XJL is a large single-engine amphibious aircraft designed by Grumman Aircraft but built by the Columbia Aircraft Corp.

It was intended to replace the Grumman J2F Duck but the type did not reach production status.

The Grumman J2F Duck biplane amphibian had successfully served the United States Navy (USN) in quantity from late 1934 onwards.

The final 330 examples were built in 1941/42 under sub-contract by the Columbia Aircraft Corp, retaining the J2F-6 designation 1.

At the end of World War II, Grumman completed a major re-design of the aircraft for the USN as a Wright R-1820-56 powered monoplane amphibian.

The new design was turned over to the Columbia Aircraft Corporation for development and construction so that Grumman could focus on the production of fighter aircraft for the USN.

The aircraft strongly resembles the J2F Duck, except for its monoplane layout, and has been referred to as a “single-winged Duck”. It is, however, a completely new design.

The USN ordered three XJL-1 experimental aircraft from Columbia, with the first being used for destructive strength testing on the ground.

The remaining two airframes, were delivered to the USNs test establishment at Patuxent River Naval Air Station Maryland for evaluation in 1946.

The two aircraft tested at Patuxent River were found to have repeated structural failures of various components and testing was abandoned on 21 September 1948.

The aircraft were deleted from the USN inventory in February 1949.

No further orders were placed for production of the JL design.

The aircraft were sold as surplus in 1959.





6 passengers


45 ft 11 in (14.00 m)


50 ft 0 in (15.24 m)


16 ft 0 in (4.88 m)

Wing area

413 sq ft (38.37 m2)

Empty weight

7,250 lb (3,288 kg)

Gross weight

13,000 lb (5,897 kg)


1 × Wright R-1820-56 , 1,350 hp (1,007 kW)


Maximum speed

200 mph (322 km/h, 170 kn)


2,070 mi (3,330 km, 1,800 nmi)

Rate of climb

1,110 ft/min (5.6 m/s).




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