The B43 was never used in combat, but it was involved in a
nuclear accident when an
A-4E Skyhawk, BuNo
151022, of the (from Attack Squadron
VA-56), was lost off the coast of
Japan on 5 December 1965 when it rolled off an elevator, in of water in the Pacific Ocean, from
Kikai Island,
Kagoshima Prefecture,
Japan. The Skyhawk was being rolled out of the number 2 hangar bay, onto the number 2 elevator, when it continued over the edge and was lost. Neither the pilot LTJG
D. M. Webster, airframe, nor the bomb were ever recovered. No public mention was made of the incident at the time and it would not come to light until a 1989
US DoD report revealed that one of these one-megaton bombs (which had recently been retired from service and replaced) had gone missing. Japan then asked for details of the incident. ==Withdrawn==