Designation: Bolingbroke Mk. IV

Bristol Bolingbroke

Bristol Bolingbroke Mk. IV

A picture of the Bristol Bolingbroke Mk. IV

Development of the Blenheim began in 1935 as a development of a civil transport.  When it first appeared, the Blenheim was faster than most of the fighters then in use by the Royal Air Force, but by the outbreak of war in 1939 it was slow and nearly obsolete.  Nevertheless, it served extensively in the first three years of the war as a bomber, night-fighter, and reconnaissance aircraft.  A version of the Blenheim Mk. IV was built in Canada by Fairchild called the Bolingbroke.  These aircraft served primarily as coastal patrol planes and as trainers.

This Bolingbroke has been restored from the parts of several planes and has been painted to recreate the markings of serial number 9118 assigned to Royal Canadian Air Force No. 115 Squadron at Annette Island, Alaska.  Bolingbroke 9118 was credited with assisting in the destruction of the Japanese submarine RO-32 in early July 1942 along with two US Coast Guard cutters.  The aircraft dropped two depth bombs on the target.  The next day the cutters reported sighting large air bubbles and oil in the water and a heavy smell of diesel fuel.  Officially the RCAF crew and the USCG cutters shared credit for killing RO-32.  In 1945, the very much intact RO-32 was captured in Japan and the credit for the sinking was rescinded.  However, in the early 2000s a photo reportedly taken by the crew of 9118 was discovered which seems to prove that they had indeed attacked a submarine that day.  It has been suggested that it was in fact a Soviet submarine.  Both the Japanese and Soviet navies purchased submarines from the British-Vickers Engineering Co. between World War I and the 1930s.  The subs were built to the same plans and were virtually identical.  The Soviet submarine Shch-138 was reported missing two days after the attack off Annette Island.  Soviet records say it was destroyed by a torpedo malfunction.  However, Soviet submarines are known to have conducted espionage missions along the US and Canadian coasts throughout the war and it is unlikely the Soviets would have admitted that one of their submarines had been caught spying on their allies.

Service History

Built by Fairchild Aircraft Ltd., Longueuil, Quebec, Canada and delivered to the Royal Canadian Air Force on January 25, 1943.  Aircraft 10076 served as a trainer until August 1946 when it was declared surplus.  It was acquired by the Military Aircraft Restoration Corp. in 1972 and moved to storage at Chino, California.  In 2004 it was loaned to the Pima Air & Space Museum for restoration and display.  In 2015 it was purchased by the museum.

Wingspan 56 ft 4 in.


Length 42 ft 9 in.


Height 9 ft 1 in.


Weight 14,500 lbs (loaded)


Max. Speed 262 MPH

Maximum Speed

Service Ceiling 28,400 ft

Service Ceiling

Range 1,400 miles


Engines Two Bristol Mercury XV radials with 920 horsepower each


Crew 4


Fairchild Aircraft Ltd.

Royal Canadian Air Force, No. 115 Squadron, Annette island, Alaska, 1942

Bolingbroke Mk. IV

Serial Number
10076 (Painted as Serial Number 9118)

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