Accident
Last updated: 29 August 2014
Estado:Final
Fecha:lunes 23 julio 1973
Hora:17:43
Tipo:Fairchild FH-227B
Operador:Ozark Air Lines
Registración: N4215
Numéro de série: 513
Año de Construcción: 1966
Horas Totales de la Célula:14300
Motores: 2 Rolls-Royce Dart 532-7
Tripulación:Fatalidades: 1 / Ocupantes: 3
Pasajeros:Fatalidades: 37 / Ocupantes: 41
Total:Fatalidades: 38 / Ocupantes: 44
Daños en la Aeronave: Anulado
Consecuencias: Written off (damaged beyond repair)
Ubicación:3,7 km (2.3 milles) SE of Saint Louis-Lambert International Airport, MO (STL) (   Estados Unidos de América) show on map
Fase: Aproximación (APR)
Naturaleza:Vuelo Doméstico Programado
Aeropuerto de Salida:Marion-Williamson County Airport, IL (MWA), Estados Unidos de América
Aeropuerto de Llegada:Saint Louis-Lambert International Airport, MO (STL/KSTL), Estados Unidos de América
Número de Vuelo: 809
Descripción:
Ozark Air Lines Flight 809, an FH-227B, was a regular flight between Nashville Metropolitan Airport, TN (BNA) and St. Louis (STL), with intermediate stops at Clarksville, TN (CKV), Paducah, KY (PAH), Cape Girardeau Airport, MO (CGI) and Marion-Williamson County Airport, IL (MWA) with an instrument flight rules (IFR) flight plan.
The flight departed Marion at 17:05. The flight proceeded via the V-335 airway toward St. Louis without difficulty. At 17:26, the Kansas City Air Route Traffic Control Center (KCC) controller requested that Flight 809 make a 360 degree turn to the right. He advised that there would be about a 5-minute delay and that the right turn would keep the flight clear of the weather.
At 17:28, the KCC controller cleared the flight to proceed to the St. Louis VOR and to contact St. Louis Approach Control. One minute later the first officer transmitted, "Approach, this is Ozark eight oh nine, seven thousand, with Quebec." Weather information 'Quebec' indicated: Estimated ceiling-4,000 feet broken, visibility-5 miles, haze
and smoke, wind-120° at 8 knots , temperature-92 degrees, altimeter-30.06, ILS runway 12R approaches in use, landing and departing runways 12. The approach controller responded: "Ozark eight oh nine, Roger, maintain seven thousand and, ... continue toward the VOR, be vectors runway three zero left ILS." Between 17:32 and 17:39, the approach controller gave Flight 809 radar vectors through an area of thunderstorm cells that lay south and southeast of the St. Louis Airport. At 17:40, the controller cleared the flight for an ILS approach to runway 30L and cleared the flightcrew to contact the St. Louis Control Tower. The Tower controller cleared the flight to land.
At 17:42:31, the local controller said, "Ozark eight oh nine, it looks like a heavy rain shower moving right across the approach end of the runway now." The first officer replied, "Roger, we see it."
After passing the Outer Marker, the aircraft began to descend below the glide slope until it struck the ground.
First, the aircraft struck tree tops about 55 feet above the ground. It continued and struck the ground on a hillside near Lowen Drive in Normandy, Missouri--a suburb of St. Louis.


PROBABLE CAUSE: "The aircraft's encounter with a downdraft following the captain's decision to initiate and continue an instrument approach into a thunderstorm. The captain's decision probably was influenced by the lack of a timely issuance of a severe weather warning by the National Weather Service, and the improper assessment of the weather conditions in the terminal area by the flight crew and the flight dispatcher."

Fuentes:

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - USA
report status: Final
report number: NTSB/AAR-74-05
report released:24-APR-1974
duration of investigation:275 days (9.2 months)
download report: Ozark Air Lines, Inc., Fairchild Hiller FH-227B, N4215, near the Lambert- St. Louis International Airport, St. Louis, Missouri, July 23, 1973. (NTSB/AAR-74-05)
cover

Fotos

Add your photo of this accident or aircraft

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 Marion-Williamson County Airport, IL to Saint Louis-Lambert International Airport, MO as the crow flies is 160 km (100 miles).

languages: English Français Nederlands Deutsch Espanol

Share
Share

Fairchild FH-227

  • 7th loss
  • 78 built
  • worst accident (a la hora)
  • 3rd worst accident (actualmente)
safety profile

 Estados Unidos de América
  • 61st worst accident (a la hora)
  • 89th worst accident (actualmente)
»safety profile