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Alaska Airlines Flight 261

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Alaska Airlines Flight 261 was departing from Puerto Vallarta, Mexico to Seattle, Washington, with a layover stop at San Francisco, California on January 31, 2000. The aircraft was a McDonnell Douglas MD-83 and had 5 crew members and 83 passengers on board at the time of its accident. It was nearly 4 hours into the flight when it crashed into the Pacific Ocean near Anacapa Island, California. All of the passengers and crew members perished. The cause of the accident resulted from an “inflight failure of the horizontal stabilizer trim system jackscrew assembly’s acme nut thread.”(NTSB, 12/10/2002) There were a couple of contributing factors that led to this failure and accident. The first factor is the lubrication intervals at which Alaska

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