The Mitsubishi G4M is a twin-engine, land-based medium bomber formerly manufactured by the Mitsubishi Aircraft Company, a part of Mitsubishi Heavy Industries, and operated by the Air Service (IJNAS) of the Imperial Japanese Navy from 1940 to 1945.

Delivered to the Imperial Japanese Navy (IJN) as Type 1 Attack Bomber / G4M1 Model 11 Betty manufacture number 1280. Assigned to an unknown Kōkūtai (Air Group). Possibly, assigned to the 761 Kōkūtai (761 Air Group). Tail code "370" and later "-321". This Betty operated from western New Guinea.

A database of photographs, desctriptions and locations of WWII wreckage remaining in Pacific.

May 23, 2024 · The G4M1 Model 11, was a multipurpose twin engine bomber, and was an all metal, mid wing design. Its semi-monocoque fuselage was built as two halves, joined at the 24th bulkhead for ease of construction.

A database of photographs, desctriptions and locations of WWII wreckage remaining in Pacific.

Site 4 - Mitsubishi G4M1 Model 11 (Late production) Betty Bomber Betty crash site survey sketch. When you walk up to the Betty site the first thing you see is the huge tail standing like an enormous monolith at the site.

Two Mitsubishi MK4E Kasei 15 fourteen-cylinder air-cooled radials rated at 1,530 hp for take-off, 1,400 hp at 2,600 m and 1,280 hp at 6,000 m, driving three-blade metal propellers (G4M1 Model 12).

Feb 24, 2015 · To meet the requirements, a Mitsubishi design team led by Kiro Honjo crafted an airplane called the G4M with fuel tanks in the wings that were not resistant to explosion when punctured during combat. These tanks were much lighter in weight than explosion-proof (also called 'self-sealing') gas tanks.

The G4M1 series was a twin engine design using two Mitsubishi 14 cylinder twin row Kasei-11 air cooled engines developing 1530 HP, giving the aircraft a maximum speed of 265 mph. The 1100 gallon fuel tanks gave the G4M1 an operational range of 3,100 miles.