The declassified federal investigation report on the 1976 plane crash that killed 11 people, including the then Sabah chief minister Fuad Stephens, found no element of sabotage.

Instead, the investigating team's conclusion is that the most probable cause of the accident - dubbed the Double Six Crash - was the plane's centre of gravity being off balance.

"The report concludes that the probable cause of the accident was due to a centre of gravity position well outside the aft limit which caused the control column to run out...