The Hulk! #13

Plot

When Bruce Banner reads a newspaper article about a scientist that can reverse the effects of radiation on people, Bruce uses the last of his money to fly to Switzerland. The airplane he rides in is suddenly hijacked, the excitement causes Bruce to transform into the Hulk and break free. The Hulk then prevents the plane from having too serious a crash.

He changes back into Bruce Banner, where he is found by the hijackers and taken with the rest. When an old woman he was riding with tries to stand up to the hijackers she is killed in cold blood. This causes Banner to change back into the Hulk who makes short work of the hijackers and carries the plane to where it can be seen by rescuers. Leaving the scene and changing back to Banner, Bruce returns to the site with the body of the old woman.