Terrifying History on Instagram: "On July 19, 1989, United Airlines Flight 232 from Denver to Chicago suffered a catastrophic failure when the tail-mounted No. 2 engine exploded at 37,000 feet, sending shrapnel through all three hydraulic systems and leaving the DC-10 with no flight controls. In an unprecedented display of airmanship, Captain Al Haynes and his crew - assisted by an off-duty DC-10 instructor who happened to be onboard - managed to steer the crippled aircraft for 44 minutes using