Airmail cover franked with 1931 3c light blue with '1931' overprint tied by GRANADA cds dated JUL 4 1931 and additional 15c vermilion with '1931' overprint applied in MANAGUA cancelled by boxed CORREO AEREO MANAGUA cancel dated JUL 5 1931 (SG 659 & 662). Addressed to USA. In the aftermath of the March earthquake all airmail stamps were recalled to Managua. Airmail letters were sent with payment from the originating P.O. to Managua where they were franked for onward transmission.