Bangkok Airways Flight 125

Coordinates: 9°31′01″N 100°02′11″E / 9.5169°N 100.03631°E / 9.5169; 100.03631
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Bangkok Airways Flight 125
A Dash 8-100, similar to the accident aircraft.
Date21 November 1990 (1990-11-21)
SummaryPilot error and spatial disorientation
Site5 km southwest of Koh Samui Airport
9°31′01″N 100°02′11″E / 9.5169°N 100.03631°E / 9.5169; 100.03631
Aircraft typede Havilland Canada Dash 8-100
OperatorBangkok Airways
IATA flight No.PG125
ICAO flight No.BKP125
Call signBANGKOK AIR 125
Flight originDon Mueang International Airport, Don Mueang, Bangkok, Thailand
DestinationKoh Samui Airport, Koh Samui, Surat Thani Province, Thailand

Bangkok Airways Flight 125 was a scheduled domestic flight from Don Mueang International Airport to Koh Samui Airport. On 21 November 1990 the Dash 8-100 operating the flight crashed on approach to Koh Samui Airport during bad weather, five kilometres (3.1 mi; 2.7 nmi) southwest of the airport, killing all 33 passengers and 5 crew. Bangkok Airways Flight 125 was the first fatal accident of Bangkok Airways.[1]

The accident was investigated by the International Civil Aviation Organization (ICAO)[citation needed] and the probable cause was determined to be spatial disorientation leading to a loss of control.


Flight 125 departed Don Mueang International Airport at 09:58 UTC. The flight was conducted under IFR and proceeded to climb to a flight level of 210 (21,000 feet (6,400 m)). At 10:45 as the aircraft approached Koh Samui Airport, the crew contacted the control tower and were informed that runway 17 was active. The tower also advised that the weather was mild with rain southeast of the airport. Due to changing wind conditions on the ground the crew was instructed to use runway 35. While attempting to line up for runway 35, errors caused the crew to perform a missed approach. The tower directed the aircraft to make left turn to avoid mountains and flight 125 started a left roll with flaps fully extended in heavy rain. The crew became disoriented and began descending while still in a left roll. The aircraft crashed into a coconut farm 5 km (3.1 mi; 2.7 nmi) southwest of Koh Samui Airport, with the loss of all 33 passengers and 5 crew. Bangkok Airways Flight 125 was the first fatal accident of Bangkok Airways.[1]


The aircraft was a two-year-old Dash 8-100, registered HS-SKI, msn 172. It was first flown in 1989. At the time of the accident, the aircraft had accumulated 3,416 flight hours and 2,998 take-off/landing cycles.


  1. ^ a b Ranter, Harro. "ASN Aircraft accident de Havilland Canada DHC-8-103 HS-SKI Koh Samui Airport (USM)". Retrieved 2019-12-11.