[2] On the day of its maiden fight, the D-1 caught fire and burned inside the Goodyear hangar [3] at Wingfoot Lake, Ohio.

The D-2,[4] D-3, D-4 and D-5 were transferred to the United States Army which the Air Ship Board had given the primary role of operating non-rigid airships after World War I.

D-3 also participated in early "hook-on" experiments to see if it was possible for an airplane to fly up to and hook onto a trapeze hanging from an airship.

[8] The D-6 was built by the Naval Aircraft Factory, Philadelphia, Pennsylvania, but her design was sufficiently different that she was distinct from the other five D-class airships.

The D-6[8] was burned in the Naval Air Station Rockaway hangar fire[9] of 31 August 1921 along with two small dirigibles, the C-10 and the H-1 and the kite balloon A-P.