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Accident description
Last updated: 22 November 2017
Status:Preliminary - official
Date:Wednesday 5 August 1998
Time:22:01
Type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-4B5
Operator:Korean Air
Registration: HL7496
C/n / msn: 26400/1083
First flight: 1996-06-18 (2 years 2 months)
Engines: 4 Pratt & Whitney PW4056
Crew:Fatalities: 0 / Occupants: 16
Passengers:Fatalities: 0 / Occupants: 379
Total:Fatalities: 0 / Occupants: 395
Airplane damage: Damaged beyond repair
Location:Seoul-Kimpo International Airport (SEL) (   South Korea)
Phase: Landing (LDG)
Nature:International Scheduled Passenger
Departure airport:Jeju (Cheju) International Airport (CJU/RKPC), South Korea
Destination airport:Seoul-Gimpo (Kimpo) International Airport (SEL/RKSS), South Korea
Flightnumber:8702
Narrative:
Korean Air Flight 8702 departed Tokyo-Narita at 16:50 for a flight to Seoul, scheduled to arrive there at 19:20. Bad weather, including heavy rainfall, at Seoul forced the flight crew to divert to Cheju. The aircraft took off from Cheju at 21:07 for Seoul.
The flight was cleared to land on runway 14R with a crosswind component as the wind was from 220 degrees at 22 knots. After touchdown the no. 1 engine thrust reverser did not deploy because the no. 1 engine power lever's position did not allow the reverser to be deployed.
The airplane ran off the side of the runway onto soft ground. Part of the main undercarriage separated after traversing a drainage ditch.

Probable Cause:

The KCAB's investigation determined that the accident was caused by the captain's misuse of the thrust reverser during the landing roll and his confusion over crosswind conditions.

Classification:
Runway excursion

Sources:
» ICAO Adrep Summary 4/98 (#40)
» Korea Herald
» Korea Times


Photos

photo of Boeing 747-4B5 HL7496
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Jeju (Cheju) International Airport to Seoul-Gimpo (Kimpo) International Airport as the crow flies is 448 km (280 miles).

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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Boeing 747

  • 1514+ built
  • 31st loss
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 South Korea
  • 27th worst accident (at the time)
  • 29th worst accident (currently)
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