the letter of the law regarding regulatory standards, taking a design approach that addresses how the pilots could address single-system failures without adequately considering scenarios in which multiple simultaneous malfunctions of different systems could occur. On October 31, 1979, a DC-10 flying as Western Airlines Flight 2605 crashed in Mexico City after a red-eye flight from Los Angeles. The Western crash, however, was due to low visibility and an attempt to land on a closed runway, through, reportedly, confusion of its crew. The loss of Air New Zealand Flight 901 on November 28, 1979, which killed 257 people, added to the DC-10's negative reputation. The Antarctic sightseeing flight hit a mountain; however, the crash was caused by several human and environmental factors not related to the airworthiness of the DC-10, and the aircraft was later completely exonerated. Ironically, another DC-10 crash ten years later, United Airlines Flight 232, restored some of the aircraft's reputation. Despite the aircraft losing an engine and all flight controls and crash-landing in a huge fireball (which was caught on video by a local news crew) that killed 112 people, 184 people survived the accident. Experts praised the DC-10's sturdy construction as partly responsible for the high number of survivors. Orders for DC-10s dropped off sharply after the events of 1979 (the U.S. economic recession of 1979–82 was also a contributing factor in reduced demand for airliners). From there until the end of production ten years later, the two largest DC-10 customers were FedEx and the U.S. Air Force (KC-10 Extender). Despite initial safety concerns, DC-10 aircraft continued to serve with passenger airlines for over three decades after the crash of Flight 191. DC-10 production ended in 1988, and many retired passenger DC-10s have since been converted to all-cargo use. The DC-10 freighter, along with its derivative, the MD-11, constitute part of the FedEx Express fleet. The DC-10s have been upgraded with the glass cockpit from the MD-11, thereby turning them into MD-10s. American Airlines retired its last DC-10s in 2000 after 29 years of service. In February 2014, Biman Bangladesh Airlines operated the final DC-10 passenger flights. DC-10s continue to be used extensively in air freight operations, and military variants also remain in service. Victims Nationalities of the victims Passengers Two of the victims in the crash of Flight 191 were: Itzhak Bentov, a Czechoslovakia-born Israeli–American biomedical inventor (the cardiac catheter) and New Age author