1922 United States Navy Aircraft Designation System - The System

The System

The system conveyed its information in the form:

(Mission)(Design Number)(Manufacturer)-(Subtype)(Minor Modification)

For example, F4U-1A referred to the first minor modification (A) to the first major subtype (1) of Chance-Vought's (U) fourth (4) fighter (F) design.

For the first few years after the system was introduced, the manufacturer's letter and the mission letter were sometimes reversed. If it was the manufacturer's first design for that particular mission, there was no number before the manufacturer letter.

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