Switchboards BD-71, BD-72, BD-72-A and BD-72-B - USA Voorschrift, Technical Manual, 11-330 Direct Support and General Support Maintenance Repair Parts and Special Tools Lists (including Depot Maintenance Repair Parts and Special Tools), Generator, Engine Accessory (Alternating Current), … Switchboard BD-96 : repair instructions operational requirements - USA Voorschrift, Technical Manual, 11-4314