The probable cause was stated to be "a loss of airplane pitch control resulting from the in-flight failure of the horizontal stabilizer trim system jackscrew assembly's trapezoidal nut threads. The subsequent investigation by the National Transportation Safety Board (NTSB) determined that inadequate maintenance led to excessive wear and eventual failure of a critical flight control system during flight. The flight was a scheduled international passenger flight from Licenciado Gustavo Díaz Ordaz International Airport in Puerto Vallarta, Jalisco, Mexico, to Seattle–Tacoma International Airport near Seattle, Washington, United States, with an intermediate stop at San Francisco International Airport near San Francisco, California. Licenciado Gustavo Díaz Ordaz International AirportĪlaska Airlines Flight 261 was an Alaska Airlines flight of a McDonnell Douglas MD-83 plane that crashed into the Pacific Ocean on January 31, 2000, roughly 2.7 miles (4.3 km 2.3 nmi) north of Anacapa Island, California, following a catastrophic loss of pitch control, killing all 88 on board: two pilots, three cabin crew members, and 83 passengers. Aircraft involved in the accident seen in 1992
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