PK-18 Matchbox Grumman Hellcat F6F-3 / Mk I.

During the early part of World War II U.S. Navy observers learned many lessons particularly about ship board fighters. At this time the 'Wildcat' F3F was entering service and it was clear that in many respects it did not compare favourably with its contemporaries.

In June 1941 therefore an order was given to GRUMMAN to produce 2 prototypes of a more advanced machine. Weighing 60% more than the earlier fighter the new aircraft flew in June 1942 as the F6F-1. More speed was requested and the engine was changed to the more powerful R-2800-10 Double wasp.

Production of this modified version was ordered in May 1942 and first production machines flew in October 1942. The aircraft was used by the Royal Navy as the Hellcat 1 and served with distinction mainly in the Pacific area.