Boeing 247

The 247 remained in airline service until [Vous devez être inscrit et connecté pour voir ce lien], when several were converted into C-73 transports and trainers. [Vous devez être inscrit et connecté pour voir ce lien], [Vous devez être inscrit et connecté pour voir ce lien] (RCAF) operated seven Model 247Ds as medium transports during the early part of the war.

Some 247s were still flying in the late 1960s, converted either into cargo transports or personal business aircraft.^{[Vous devez être inscrit et connecté pour voir ce lien]
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A number of specially modified variants included a Boeing 247Y appropriated from United for Air Corps use as a test aircraft fitted with two machine guns in the nose.

The same installation later was fitted to a 247Y owned by Generalissimo [Vous devez être inscrit et connecté pour voir ce lien]; this aircraft also featured a Colt .50 caliber machine gun in a flexible mount.

A 247D purchased by the British Royal Air Force became a test mule for new equipment, featuring a nonstandard nose, new powerplants and non-retracting gear.
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The Turner/Pangborn 247D still exists. Originally flown on September 5, 1934, it was leased from United Airlines for the 1934 MacRobertson Race and returned to United where it served in regular airline service until 1937.

Subsequently, the 247D was sold to the Union Electric Company of St. Louis for use as an executive transport.

The Air Safety Board purchased the aircraft in 1939 and it remained in use for 14 years before it was donated to the [Vous devez être inscrit et connecté pour voir ce lien], [Vous devez être inscrit et connecté pour voir ce lien].

It is displayed today with two sets of markings, the left side is marked as NR257Y, in Colonel Turner's 1934 MacRobertson Race colors, while the right side is painted in United Airlines livery, as NC13369.

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Variants



Model 247

Twin-engined civil transport airliner. Initial production version

247A

Powered by new 625 hp P&W Wasp, on special order for Deutsch Luft-Hansa in 1934.

247E

This designation was given to the first Boeing 247 aircraft, it was
used to test a number improvements, that were later incorporated into
the Boeing 247D

247D

Original one-off was a race aircraft designed for the McRobertson
Race; use of Hamilton Standard variable-pitch propellers allowed for a
seven mph gain; the 247D configuration incorporated in production series
bearing the same name.

247Y

Armed version, one exported to China, second used for trials.

C-73

Designation for Boeing 247D airliners "drafted" into military service in USAAF, 27 in total.

247A

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247D

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247D

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Deux ans plus tard arrivait le DC-2 ce qui explique en partie la courte carrière du B 247