NTSB were unable to identify the cause of the initiating electrical failure but did identify two battery issues, one connected to a maintenance error & inadequate functional test requirement.
A lack of a common understanding on minimum drop height was a factor in this 737 striking rising ground after a fire bombing run in Australia
A pilot queries pitch, roll and heave on a drillship helideck. The vessel’s Radio Operator has to go to the DP system screen to find the data. Shortly after the DP system changes to manual mode and control of heading is lost. The change in wind direction rolls the aircraft over.