Alaska Airlines Flight 261
At 16:11, ARTCC asked Flight 261 about their condition, and the flight crew notified them that they were trying to troubleshoot a jammed horizontal stabilizer. The crew then requested, and were granted an altitude block between 20,000 and 25,000 feet. They were then handed off to Los Angeles Center 5 minutes later, who they notified of their intentions to divert to Los Angeles International Airport and their troubles in maintaining their altitude. Flight 261 was then cleared to FL170 and the crew then requested another block of altitude. This was the last transmission from the plane.