A silver color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a blue equilateral triangle bearing two silver stars, one above the other, and with its apex between two vertical orange broad arrows, tips to base, all within two silver wings the tips curved upwardly and conjoined and the scapulars resting in base upon an orange scroll bearing the inscription "CURA ET PERFECTIO" in silver letters.
Ultramarine blue and golden orange are the colors traditionally associated with Aviation. The two broad arrows denote the Southern Philippines and Luzon Campaign assault landings and the stars symbolize the Bismarck Archipelago and Leyte Campaigns during World War II, in which the former organization participated. The triangular shapes, suggested by the Philippine Presidential flag, allude to the Philippine Presidential Unit Citation awarded to an element of the unit for those campaigns. The wings, symbols of flight, allude to that aspect of the organization's mission. The motto is translated to "Accuracy and Perfection."
The distinctive unit insignia was originally approved for the 49th Aviation Battalion on 11 April 1969. It was redesignated for the 76th Aviation Group on 10 December 1974. It was redesignated for the 40th Aviation Battalion on 13 April 1979. The insignia was redesignated for the 140th Aviation Regiment with the description and symbolism revised effective 1 October 1987.