Thai Airways Flight 365 crashes into the ocean near Ko Phuket, Thailand, killing all 83 aboard.

Thai Airways Flight 365 was a Thai Airways Company Boeing 737-2P5 with the registration number HS-TBC. On 31 August 1987, the plane crashed during a scheduled flight from Hat Yai International Airport to Phuket International Airport, killing all 83 people on board: 74 passengers and 9 crew. It was the deadliest aviation accident in Thailand at the time, before being surpassed four years later by the crash of Lauda Air Flight 004. Concerned by another aircraft in their vicinity, the crew reduced their approach speed while attempting to land, and failed to recover from an aerodynamic stall. In addition to pilot error, the air traffic controller was blamed for failing to keep Flight 365 and the other aircraft adequately separated.

Phuket is one of the southern provinces (changwat) of Thailand. It consists of the island of Phuket, the country's largest island, and another 32 smaller islands off its coast. Phuket lies off the west coast of mainland Thailand in the Andaman Sea. Phuket Island is connected by the Sarasin Bridge to Phang Nga province to the north. The next nearest province is Krabi, to the east across Phang Nga Bay.