What happened
A formation of five Consolidated B-24E Liberator bombers was en route from Wendover Air Force Base to Pocatello, Idaho. While cruising at an altitude of 11,100 feet, the aircraft registered 42-7183, which occupied the third position in the formation, began to fall behind the group. The pilot of this aircraft increased engine power to close the distance and rejoin the formation. During this maneuver, the tail of 42-7183 struck the left wing of the aircraft registered 42-7408. The impact sheared off the number one engine of 42-7408, causing both planes to lose control. Both aircraft dived into the ground and crashed in a massive explosion. All 25 occupants across the two aircraft were killed.
Findings
Official investigations determined that the pilot of 42-7183 bore full responsibility for the accident due to a failure to adhere to basic disciplinary rules during the training flight. However, investigators also noted that heavy icing in the region was a contributing factor, as it reduced the performance capabilities of the aircraft involved.