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DOUGLAS A-26 INVADER
XA-26 - Serial no. 41-19504 served as the prototype for the series; initially flown with dummy armament
XA-26A - Serial no. 41-19505 served as a prototype night fighter with a crew of two - pilot plus radar-operator/gunner
XA-26B - Serial no. 41-19588 was a prototype "solid-nosed" attack variant with crew of three: pilot, gun loader/navigator (in front cockpit) plus gunner in rear, and carrying a forward firing 75 mm (2.75 in) cannon.
A-26B - Attack bomber with solid nose carrying six or eight 0.50 in (12.7 mm) machine guns. Production totals: 1,355 A-26Bs were built and delivered, 205 at Tulsa, Oklahoma (A-26B-5-DT to A-26B-25-DT) plus 1,150 at Long Beach, California (A-26B-1-DL to A-26B-66-DL). About 24 more airframes were built at Long Beach but not delivered to USAAF, some of those later sold to other civil and military customers. A-26B was redesignated B-26B with USAF in 1948.
B-26B-51-DL Invader/44-34331 of the 8th BS/3rd BG, over North Korea, circa 1951
TB-26B - Unarmed variant converted from B-26B for training purposes.
VB-26B - Unarmed variant converted from B-26B for administrative purposes.
A-26C - Attack bomber. Production totals: 1,091 A-26Cs were built and delivered, five at Long Beach, California (A-26C-1-DL and A-26C-2-DL) plus 1,086 at Tulsa, Oklahoma (A-26C-16-DT to A-26B-55-DT). About 53 more airframes were built at Tulsa but not delivered to USAAF, some of those later sold to other civil and military customers. A-26C was redesignated B-26C with USAF in 1948.
RB-26C - Unarmed photo reconnaissance variant converted from B-26C; it carried cameras and flash flares for night photography. Designated FA-26C prior to 1962.
TB-26C - Unarmed variant converted from B-26C for training purposes.
XA-26D - Serial no. 44-34776 prototype for the proposed A-26D attack bomber with uprated Chevrolet manufactured R-2800-83 engines, and late model A-26B armament of eight 0.50 in (12.7 mm) machine guns in solid nose and six 0.50 in (12.7 mm) guns in the wing; series of 750 A-26Ds was cancelled after V-J Day.
XA-26E - Serial no. 44-25563 prototype for the A-26E attack bomber. As with the XA-26D but with an A-26C-type glass nose; a contract for 2,150 A-26E-DTs was cancelled following V-J Day.
XA-26F - Serial no. 44-34586 prototype for a high-speed A-26F powered by two 2,100 hp (1,600 kW) R-2800-83 engines driving four-bladed propellers with a 1,600 lbf (7.1 kN) s.t. General Electric J31 turbojet installed in the rear fuselage. The prototype reached a top speed of 435 mph (700 km/h) but the series was cancelled as performance gains were not sufficient.
A-26Z - Unofficial designation for a proposed postwar production version of the A-26. It was to have a more powerful version of the Pratt & Whitney R-2800 radial engine and was to be fitted with such features as a raised pilot's cockpit canopy, an improved cockpit arrangement and wingtip drop tanks. If produced, the unglazed nose version would have been designated A-26G and the glazed nose version A-26H. However, in October 1945, the USAAF concluded that there were enough A-26 aircraft to meet postwar needs, consequently, the "A-26Z" version was not produced.
JD-1 - US Navy version with one A-26B (44-34217) and one A-26C (44-35467) redesignated during World War II, postwar, 150 surplus A-26s for use by land-based utility squadrons as target tugs and later, drone directors (designated JD-1D) and general utility aircraft. In 1962, the JD-1 and JD-1D were redesignated UB-26J and DB-26J respectively.
YB-26K - On Mark Engineering prototype for refurbished attack bomber; modifications included rebuilt, strengthened wings, enlarged tail assembly, new R-2800-103W engines with reversible propellers/propeller spinners, dual controls, wingtip tanks, newer avionics and increased hardpoint/armament enhancements.
B-26K - On Mark Engineering conversions of 40 B-26Bs or TB-26Bs with two B-26Cs and a single JB-26C; changes included fitting of 2,500 hp (1,900 kW) R-2800-52W engines with no propeller spinners and the six wing guns deleted. During operations in Vietnam, in May 1966, the aircraft were reassigned the old attack designation of A-26A. The A-26As were retired in 1969 when they had reached the safe limits of allotted flying time.
B-26K Invader/67-17645 of the 609th SOS near
Nakhon Phanom Royal Thai Air Force Base circa 1968.
RB-26L - Two RB-26Cs (44-34718 and 44-35782) modified for night photography missions.
B-26N - Unofficial designation applied to B-26s operated by the French Air Force (Armée de l'air) in Algeria as night fighters. These aircraft were modified B-26Cs fitted with AI Mk X radar taken from obsolete Meteor NF 11 night fighters, two underwing gun packs each with two 0.50 in (12.7 mm) M2 Browning machine guns and SNEB rocket pods.
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