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Last updated: 18 September 2020
Status:Definitief
Datum:woensdag 21 november 1990
Tijd:18:15
Type:Silhouette image of generic DH8A model; specific model in this crash may look slightly different
de Havilland Canada DHC-8-103
Luchtvaartmaatschappij:Bangkok Airways
Registratie: HS-SKI
Constructienummer: 172
Bouwjaar: 1989
Aantal vlieguren:3416
Aantal vluchten:2998
Motoren: 2 Pratt & Whitney Canada PW120A
Bemanning:slachtoffers: 5 / inzittenden: 5
Passagiers:slachtoffers: 33 / inzittenden: 33
Totaal:slachtoffers: 38 / inzittenden: 38
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:5 km (3.1 mijl) SW of Koh Samui Airport (USM) (   Thailand)
Fase: Nadering (APR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Bangkok-Don Muang International Airport (BKK/VTBD), Thailand
Vliegveld van aankomst:Koh Samui Airport (USM/VTSM), Thailand
Vluchtnummer: 125
Beschrijving:
Flight 125 left Bangkok at 09:58 UTC with IFR clearance to Samui at FL210. Samui Tower was contacted at 10:45 and the crew were told runway 17 was the active runway and that the weather was fair with rain southwest of the field. Wind was later reported at 030 deg/10 knots and the runway was changed to runway 35. On base leg for runway 35 the flight continued ahead instead of turning right for finals. A missed approach procedure was executed with flaps still fully extended and both pilots were confused about which way to go. Samui Tower instructed them to turn left because of a mountain on the right side. BKP 125 entered an area of heavy rain and rolled to the left. Both pilots were disoriented as the aircraft continued to descend in a left wing down attitude. The aircraft eventually impacted into a coconut plantation at a 147 knots speed, 36deg nose-down and 75deg left roll.

Probable Cause:

PROBABLE CAUSE: "The pilot experienced spatial disorientation which resulted in improper control of the aircraft. Factors which contributed to accident were as follows: (1) The pilot flew the aircraft into bad weather condition which had very little or no visual reference; (2) Channelized attention occurred when all of the pilots concentration were focused on looking for the airport and neglecting to do proper cross checking or monitoring the aircraft attitude; (3) Confusion of pilots, poor teamwork or poor cockpit co-ordination in monitoring the flight instruments might contribute to loss of situational awareness and improper control of the aircraft through their false senses."

Bronnen:
» ICAO Circular 263-AN/157 (231-245)


Foto's

photo of DHC-8-103-HS-SKI
accident date: 21-11-1990
type: de Havilland Canada DHC-8-103
registration: HS-SKI
 

Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Bangkok-Don Muang International Airport en Koh Samui Airport bedraagt 486 km (304 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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DHC-8-100

  • 404 built
  • 2e ongeval
  • The first dodelijk ongeval
  • The zwaarste ongeval
» safety profile

 Thailand
  • 5e zwaarste ongeval (toen het plaatsvond)
  • 8e zwaarste ongeval (op dit moment)
» safety profile