DEPARTMENT OF THE NAVY

BUREAU OF NAVAL WEAPONS

WASHINGTON 25, D.C.

BUWEP5 13100.A SUP 15 RA-1411

21 Aug 1962

BUWEPS INSTRUCTION 13100.1A SUP 15

From: Chief, Bureau of Naval Weapons To: Distribution List

Subj: Model X-22A; establishment of model designation

Ref: (a) BUWEPSINST 13100.1A of 17 May 1961, Subj: Model Designation of Naval Aircraft (b) DOD Directive 4505.6 of 6 July 1962, Subj: Designating, Redesignating and Naming Military Aircraft

1. Purpose. This Supplement to reference (a) promulgates the model designation of the X-22A Research Aircraft.

2. Model Designation Establishment. The model designation of X-22A has been approved for the Tri-Service VTOL Research Aircraft manufactured by Bell Aero-systems Company (Manufacturer's code letters BC). The mission of this aircraft is to provide a vehicle to explore the mechanical and aerodynamic problems associated with the design, construction and test of the dual tandem, ducted propeller design and to evaluate its military potential including carrier flight deck operation and compatibility with the civil airways system. The aircraft serial numbers are not available at this time.

3. Information. It is noted that the X-22A designation does not conform with existing U.S Navy procedures for establishing model designations as outlined in reference (a), but is consistent with the uniform system of designating, redesignating and naming of military aircraft as outlined in reference (b).

4. Action. Effective immediately, all addressees concerned with Model X-22A Research Aircraft shall identify these aircraft in accordance with the subject model designation. This designation shall apply to all correspondence, aircraft service changes, specifications, records, publications and other official business.

/S/

J. G. HEDRICK By direction