- 7.7/103 votes
#1 - Hidden Danger (United Airlines 585, USAir 427 and Eastwind Airlines 517)
Season 4 Episode 5 - Aired 5/13/2007
On 3 March 1991, a Boeing 737 operating as United Airlines Flight 585 is on approach to land, when it suddenly rolls into a dive and crashes within eight seconds, killing all 25 people on board. On 8 September 1994, USAir Flight 427 is another Boeing 737 on approach to land, when it rolls and crashes within thirty seconds, killing all 132 people on board. On 9 June 1996, Eastwind Airlines Flight 517 is another Boeing 737 that unexpectedly rolls in similar circumstances, but the crew successfully regains control of the aircraft and lands safely. The cause of all three incidents was the rudder experiencing a "hardover" (suddenly going to full deflection) and jamming due to thermal shock of the hydraulic control valve.
Director: John LaRose
Writer: Michael Sheehan
- 7.7/103 votes
#2 - Ghost Plane (Helios Airways Flight 522)
Season 4 Episode 10 - Aired 6/17/2007
On 14 August 2005, air traffic controllers lose radio contact with Helios Airways Flight 522. Two fighters from the Hellenic Air Force intercept and investigate the flight and find all but one person on board not moving. A few moments later, the aircraft runs out of fuel and crashes, killing all 121 people on board. An incorrect setting on the cabin pressurization panel caused the pilots and everyone else on board to succumb to hypoxia.
Director: John LaRose
Writer: Larry Bambrick