'a' for a2-a5 engine to a2-a5 gear case, standard rotation
NSN 6220-00-728-4559
NSN 6320-01-067-0474
NSN 6220-00-255-5652
NSN 5990-01-124-9063
NSN 6135-01-510-9986
NSN 4140-00-913-9374
NSN 5965-01-037-8333
NSN 6645-00-754-4108
NSN 6610-00-250-5344
NSN 5895-01-467-2659
NSN 5975-01-527-2406
NSN 6105-01-323-7679