Original Item. Only One Available. This is an interesting U.S. WWII-era aircraft structural component, believed to be a center-section leading-edge wing rib assembly from the Vultee BT-13 Valiant basic trainer. Measuring approximately 23" x 12" [58.4 x 30.5 cm], the piece is constructed from formed sheet metal with a curved upper profile, numerous riveted reinforcements, and mounting brackets along the lower section.

The assembly retains a substantial amount of its yellow protective finish, resembling the zinc-chromate primer commonly used on American aircraft components of the period. An olive-green reinforcing panel occupies the upper portion of one face, while several circular openings and rows of smaller drilled holes are distributed throughout the structure.

Of particular interest is a black identification stencil on the reverse, incorporating the word ASSEMBLY and a number that appears to read:

74-06308-0

The marking is partially worn, particularly toward the end. The "74" prefix is associated with Vultee's V-74 aircraft series, providing a possible connection to the BT-13 Valiant family.

The olive-green panel also carries a later-added yellow Vultee trademark and an aircraft illustration, accompanied by the printed wording:

Vultee Vengeance

BT-13 Center Section Leading Edge Wing Rib

The second inscription identifies the component's presumed position within the aircraft's wing structure. The Vengeance name refers to a separate Vultee dive bomber, while the BT-13 was officially designated the Valiant.

Condition is good overall, with noticeable age and storage wear. Much of the yellow finish survives, although scattered scratches, abrasions, and areas of paint loss are present, particularly along the outer edges. The reverse exhibits widespread small oxidation spots and localized surface pitting, while the lower reinforcing brackets show more pronounced reddish-brown corrosion. The riveted construction remains substantially intact, the assembly retains its original overall shape, and the later display lettering remains clear.

Historical Context

The Vultee BT-13 Valiant was one of the principal basic training aircraft used by the United States Army Air Forces during WWII. Its origins can be traced to the late 1930s, when Vultee Aircraft developed the Model V-51, a two-seat military trainer evaluated by the U.S. Army Air Corps in 1939 under the designation BC-3.

Following these trials, Vultee developed a simplified version designated the Model V-74, incorporating fixed landing gear and a less powerful engine. Accepted into Army service as the BT-13 Valiant, the aircraft entered production during the rapid expansion of American military aviation before and during WWII.

The BT-13 was powered by a 450-horsepower Pratt & Whitney R-985 radial engine and accommodated a student pilot and instructor in tandem cockpits equipped with dual controls. Its fixed landing gear and relatively straightforward construction made it suitable for the demanding training schedules required by the Army Air Forces.

Within the American military pilot training program, the Valiant was primarily employed during the basic phase, following initial instruction in primary trainers and preceding advanced flight training. Cadets progressed to heavier, faster aircraft while learning instrument flying, formation procedures, night operations, and cross-country navigation. The BT-13 also introduced students to equipment such as two-way radios, landing flaps, and two-position propellers, preparing them for the aircraft they would encounter later in their military careers.

The aircraft became widely known among its pilots as the "Vultee Vibrator," a nickname referring to the vibrations and rattling experienced during flight. Despite this reputation, the BT-13 became an essential part of the wartime training program.

Several versions were produced, including the BT-13A and BT-13B, which incorporated changes to their equipment and electrical systems. Engine shortages also led to the production of the closely related BT-15, powered by a Wright R-975 radial engine. The U.S. Navy operated versions of the Valiant under the SNV designation.

By the end of WWII, approximately 10,375 BT-13 and BT-15 aircraft had been accepted by the USAAF, making the Valiant family one of the most extensively employed American military training aircraft of the period.

The wing construction of aircraft such as the BT-13 depended upon a framework of spars, ribs, and reinforcing members. Wing ribs established the aerodynamic contour of the wing and supported its covering, while the spars carried the principal structural loads. Leading-edge ribs helped maintain the curved forward section of the airfoil, which was important to the wing's aerodynamic shape.

These components were manufactured as individual structural assemblies and incorporated into the larger wing framework during production. Their formed metal construction allowed strength and rigidity to be maintained while limiting unnecessary weight. Riveted joints secured the various sections together, while drilled openings and mounting fittings provided attachment points for adjoining structural members.

The BT-13's production coincided with an extraordinary expansion of American military aviation manufacturing and pilot training. By 1944, the Army Air Forces operated 31 basic flying training fields across the United States, and by the end of the war, its Training Command had graduated approximately 250,000 pilots.