A long spar, beam or a-frame structure, to support a hoist.
NSN 5915-01-511-1024
NSN 6610-01-380-9612
NSN 5835-00-372-3736
NSN 5915-00-346-2611
NSN 6150-00-683-5349
NSN 5910-01-550-4674
NSN 5930-01-514-7541
NSN 6620-01-476-7355
NSN 6145-01-167-1835
NSN 6135-00-347-0595
NSN 5990-01-045-7754
NSN 6620-01-028-0504