MIL-S-17917A, MILITARY SPECIFICATION: SANDWICH CONSTRUCTION, ALUMINUM ALLOY FACINGS, BALSA WOOD CORE (09-JUL-1969) [NO S/S DOCUMENT]

MIL-S-17917A, MILITARY SPECIFICATION: SANDWICH CONSTRUCTION, ALUMINUM ALLOY FACINGS, BALSA WOOD CORE (09-JUL-1969) [NO S/S DOCUMENT]., This specification covers the requirements for structural sandwich composites consisting of aluminum alloy facings and balsa wood cores for aircraft structural application.