Fire broke out on a RC-135V while the aircraft was about to take-off at Offutt Air Force Base on Apr. 30. Now, investigators have figured out that an oxygen leak was the cause of the accident.
![635749819120060830-RC-135-Fire-Damage[1]](http://alert5.com/wp-content/uploads/2015/08/635749819120060830-RC-135-Fire-Damage1.png)
Photo: Air Combat Command
When the aircraft underwent depot maintenance, personnel from L3 Communications failed to properly tighten a retaining nut to a junction which was fed by oxygen. The leak started a fire which burn a hole on the upper fuselage.
Four on board were lucky to escape with just smoke inhalation.