Thai Airways flight 365
| Thai Airways flight 365 | |
|---|---|
 An identical Thai Airways machine |
|
| Accident summary | |
| Accident type | Stall on approach for landing |
| place | near Phuket Airport |
| date | August 31, 1987 |
| Fatalities | 83 |
| Survivors | 0 |
| Aircraft | |
| Aircraft type | Boeing 737-200 |
| operator | Thai Airways |
| Mark | HS-TBC |
| Departure airport | Hat Yai Airport |
| Destination airport | Phuket Airport |
| Passengers | 74 |
| crew | 9 |
| Lists of aviation accidents | |
Thai Airways Flight 365 was a scheduled domestic flight of Thai regional airline Thai Airways from Hat Yai to Phuket , one on the on 31 August 1987 Boeing 737-200 in the final approach to the airport Phuket due to a stall crashed into the sea.
plane
The crashed Boeing 737-200 with the aircraft registration HS-TBC and the factory number 22267/685 was built in 1980 and was therefore 7 years and 1 month old at the time of the crash. The aircraft had completed 16,963 flight hours by the time it crashed.
course
The Thai Airways Boeing 737, which took off from Hat Yai, approached the rotary radio beacon of Phuket Airport on Radial 119 at 1,200 meters (4,000 feet ), while at the same time a second Boeing 737 from Dragonair (now Cathay Dragon) was approaching the airport on Radial 090 .
At 3:34 p.m. local time (08:34 UTC ), the Dragonair captain informed the air traffic controller that he was 24 kilometers (13 NM ) from the airport at an altitude of 750 meters (2,500 feet ) and that the Thai Airways See machine at a distance of approximately 9 kilometers (5 NM). Because the Dragonair Boeing 737 was closer to the airport and flew at a lower altitude, its pilots were the first to receive clearance. The Dragonair then turned to the right to enter the final approach for runway 27. A few seconds later, the Thai pilots were told to descend to 1,000 meters (3,000 feet) and land second.
Immediately afterwards, approach control was called again by the Thai crew, who stated that the position information of the Dragonair flight was incorrect. The Thai pilots also informed the air traffic controller that they were only 15 kilometers (8 NM) from the airport, even though their aircraft was significantly further away at the time. Air traffic control gave the Thai machine priority for landing at 8:36 a.m.
The captain of the Dragonair flight has now warned of a possible collision because the Thai Boeing 737 would cut the flight path of his machine. As a result, the Thai Airways crew reduced the speed. When the speed dropped to 163 knots , the stick shaker activated . The machine slowed another ten seconds. At a speed of 152 knots was a stall . After activating the stickshaker, the master increased the power of the engines and retracted the landing gear to intercept the machine, but this was no longer possible because of the low altitude. The plane crashed 15 kilometers east of the airport in the Andaman Sea , shattered on impact and sank to the sea bed about 20 meters deep. All 83 occupants were killed in the crash.
Cause of accident
The accident was caused by negligence on the part of the pilots and air traffic control. While the captain of Thai Airways Flight 365 was reducing airspeed and preparing for landing, the Dragonair crew warned him of a possible collision between the two planes on the final approach . Because the Thai aircraft was behind and above the Dragonair Boeing, the Thai aircraft would have crossed its altitude if the landing order had been adhered to. It seemed that the Thai crew was irritated by the warning from the Dragonair captain, and probably decided to land after the other plane, ignoring their decreasing speed.
There was particular criticism of the way air traffic control worked, which reassigned the landing priorities within a minute without being clear about the actual positions of both machines. According to the investigators, the Thai Airways pilots should not have received a landing permit, but rather the previously established graduation should have been maintained. The correct procedure would have been to request a traffic pattern , even if the Thai machine was actually closer to the airport.
The two air traffic controllers on duty were assigned other fields of work after the accident. Disciplinary proceedings have been initiated against her manager .
Individual evidence
- ↑ a b c Aircraft accident data and report in the Aviation Safety Network (English)
- ↑ a b c ICAO Circular 259-AN / 153, Aircraft Accident Digest No. 34, 1987, pages 97–118 (PDF)
- ↑ a b c d Aircraft Disasters, David Gero, Stuttgart 1994
Coordinates: 8 ° 6 ′ 0 ″ N , 98 ° 27 ′ 10 ″ E