Accident description
Last updated: 29 August 2014
Status:Preliminary - official
Date:Wednesday 16 September 1998
Time:22:53
Type:Boeing 737-524
Operator:Continental Air Lines
Registration: N20643
C/n / msn: 28904/2933
First flight: 1997-09-12 (1 year )
Engines: 2 CFMI CFM56-3C1
Crew:Fatalities: 0 / Occupants: 6
Passengers:Fatalities: 0 / Occupants: 102
Total:Fatalities: 0 / Occupants: 108
Airplane damage: Damaged beyond repair
Location:Guadalajara-Miguel Hidal Airport (GDL) (   Mexico) show on map
Phase: Landing (LDG)
Nature:International Scheduled Passenger
Departure airport:Houston-George Bush Intercontinental Airport, TX (IAH/KIAH), United States of America
Destination airport:Guadalajara-Don Miguel Hidalgo y Costilla International Airport (GDL/MMGL), Mexico
Flightnumber: 475
Narrative:
Continental Flight 475 departed Houston at 20:56 for an IFR flight to Guadalajara. After executing a missed approach on their first ILS approach to runway 28, the flight was vectored for a second approach to runway 28. The second approach was reported by both pilots to be uneventful; however, after touchdown, the aircraft drifted to the left side of the runway. The left main landing gear exited the hard surface of the runway approximately 2700 feet from the threshold and eventually all 3 landing gears exited the 197 foot wide asphalt runway. The first officer, who was flying the airplane, stated that he never felt any anti-skid cycling during the landing roll and did not feel any "radical braking" which was expected with the auto-brake in the number 3 setting. The airplane's nose landing gear collapsed resulting in structural damage to the avionics bay, the forward baggage compartment, the engine cowlings and pylons. Both engines incurred FOD. A total of 15 runway lights on the southern edge of runway 28 were found either sheared or knocked down. The tower operator reported that intermittent heavy rain showers accompanied with downdrafts and strong winds associated with a thunderstorm northeast of the airport prevailed throughout the area at the time of the accident. The two transport category airplanes that landed prior to Continental flight 475 reported windshear on final approach. The winds issued to Continental 475 by the tower while on short final were from 360 degrees at 20 knots, gusting to 40 knots. Prior to the arrival of Continental flight 475, an Aeromexico MD-82, drifted to the left side of the runway to the point where the left main gear exited the hard surface of the runway. The pilot of that flight stated that he used differential power to regain control and bring the aircraft back on the runway. The flight taxied to the gate without further incident.

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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 Houston-George Bush Intercontinental Airport, TX to Guadalajara-Don Miguel Hidalgo y Costilla International Airport as the crow flies is 1313 km (821 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Networkĺs 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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