Détails:A Colgan Air DHC-8-400, N200WQ, operating as Continental Connection flight 3407, crashed during an instrument approach to runway 23 at the Buffalo-Niagara International Airport (BUF), Buffalo, New York. The crash site was approximately 5 nautical miles northeast of the airport in Clarence Center, New York, and mostly confined to one residential house (6038 Long St, Clarence) . The four flight crew and 45 passengers were fatally injured and the aircraft was destroyed by impact forces and post crash fire. There was one ground fatality. Night visual meteorological conditions prevailed at the time of the accident.
|Date:||jeudi 12 février 2009|
de Havilland Canada DHC-8-402 Q400
|Numéro de série:|| 4200|
|Année de Fabrication:|| 2008|
|Heures de vol:||1819|
|Moteurs:|| 2 Pratt & Whitney Canada PW150A|
|Equipage:||victimes: 5 / à bord: 5|
|Passagers:||victimes: 44 / à bord: 44|
|Total:||victimes: 49 / à bord: 49 |
|Victimes au sol:||victimes: 1|
|Dégats de l'appareil:|| Détruit|
|Conséquences:|| Written off (damaged beyond repair)|
|Lieu de l'accident:||10 km (6.3 milles) NE of Buffalo Niagara International Airport, NY (BUF) (Etats-Unis d'Amérique)
|Phase de vol:|| En approche (APR)|
|Nature:||Transport de Passagers Nat.|
|Aéroport de départ:||Newark-Liberty International Airport, NJ (EWR/KEWR), Etats-Unis d'Amérique|
|Aéroport de destination:||Buffalo Niagara International Airport, NY (BUF/KBUF), Etats-Unis d'Amérique|
|Numéro de vol:||3407|
Flight CJC3407 departed Newark-Liberty International Airport, NJ (EWR) at 21:20 on a domestic flight to Buffalo Airport, NY (BUF). At 22:15:14 the Buffalo Approach controller cleared the flight for an ILS approach to runway 23: "Colgan thirty four zero seven three miles from klump turn left heading two six zero maintain two thousand three hundred til established localizer clear i l s approach runway two three." The flight acknowledged that clearance.
At 22:16:02, the engine power levers were reduced to flight idle. At that time Buffalo Approach instructed the crew to contact Buffalo Tower. The crew extended the landing gear and the auto flight system captured the ILS 23 localizer. The captain then moved the engine conditions levers forward to the maximum RPM position as the copilot acknowledged the instructions to Buffalo Tower.
At 22:16:28 the crew moved the flaps to 10°, and two seconds later the stall warning stick shaker activated. The autopilot disconnected at about the same time that the stick shaker activated. The crew added power to approximately 75% torque. The airplane began a sharp pitch up motion, accompanied by a left roll, followed by a right roll, during which the stick pusher activated. During this time, the indicated airspeed continued to decrease to less than 100 kts. Eight seconds after the flaps had been selected to 10°, and at an airspeed of less than 110 kts, the crew retracted the flaps. Sixteen seconds later the flaps were fully retracted.
Following further pitch and roll excursions the airplane pitched down and entered a steep descent from which it did not recover. The airplane impacted a residential house and was destroyed.
Weather reported about the time of the accident (03:20 UTC):
KBUF 130254Z 24015G22KT 3SM -SN BR FEW011 BKN021 OVC027 01/M01 A2979 RMK AO2 SLP097 P0001 60004 T00061006 51015=
[Wind 240 degrees at 15 kts, gusting to 22kts; light snow, mist with a visibility of 3 miles; few clouds 1,100 ft.; broken clouds 2,100 ft.; overcast 2,700 ft. Temperature 0.6°C, Dewpoint -0.6°C]
KBUF 130354Z 24011KT 3SM -SN BR SCT011 OVC021 01/M01 A2981 RMK AO2 SLP103 P0002 T00061006=
[Wind 240 degrees at 11 kts; light snow, mist with a visibility of 3 miles; scattered clouds 1,100 ft.; overcast 2,100 ft.;Temperature 0.6°C, Dewpoint -0.6°C
PROBABLE CAUSE: "The National Transportation Safety Board determines that the probable cause of this accident was the captain’s inappropriate response to the activation of the stick shaker, which led to an aerodynamic stall from which the airplane did not recover. Contributing to the accident were (1) the flight crew’s failure to monitor airspeed in relation to the rising position of the low-speed cue, (2) the flight crew’s failure to adhere to sterile cockpit procedures, (3) the captain’s failure to effectively manage the flight, and (4) Colgan Air’s inadequate procedures for airspeed selection and management during approaches in icing conditions."
» The Buffalo News
Opérations de secours
Ce plan montre l'aéroport de départ ainsi que la supposé destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Newark-Liberty International Airport, NJ et Buffalo Niagara International Airport, NY est de 450 km (281 miles).
Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tels qui sont connus à ce jour.