ASN logo
Accident
Last updated: 15 December 2017
Status:Schlussbericht
Datum:Samstag 17 März 2001
Zeit:07:05
Flugzeugtyp:Silhouette image of generic A320 model; specific model in this crash may look slightly different
Airbus A320-212
Fluggesellschaft:Northwest Airlines
Kennzeichen: N357NW
Werknummer: 830
Baujahr: 1998
Betriebsstunden:9346
Triebwerk: 2 CFMI CFM56-5A3
Besatzung:Todesopfer: 0 / Insassen: 6
Fluggäste:Todesopfer: 0 / Insassen: 145
Gesamt:Todesopfer: 0 / Insassen: 151
Sachschaden: schwer beschädigt
Konsequenzen: Repaired
Unfallort:Detroit-Metropolitan Wayne County Airport, MI (DTW) (   USA)
Flugphase: Start (TOF)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Detroit-Metropolitan Wayne County Airport, MI (DTW/KDTW), USA
Flug nach:Miami International Airport, FL (MIA/KMIA), USA
Flugnummer: 985
Unfallbericht:
Takeoff was initiated on runway 3C (8,500 feet by 200 feet, wet). The flight crew reported that at an airspeed of approximately 110 knots, the nose of the airplane began to lift off. The captain attempted to lower the nose, however, the airplane was unresponsive. The airplane became airborne and climbed to an altitude of 20 to 30 feet above the runway. The captain reduced the power on both engines and the airplane settled to the runway, striking the tail. The airplane traveled approximately 700 feet off the end of the runway where it came to rest in the muddy terrain. An emergency evacuation was performed during which the L2 evacuation slide did not deploy. During the investigation, NTSB determined that the airplane was loaded so that its center of gravity (CG), although within limits, was in the aft region of the permissible range. Further, the flight crew had incorrectly set the trim for the trimmable horizontal stabilizer (THS) at -1.7°UP (airplane nose up). This setting resulted in a pitch-up trim condition. The proper trim setting, 1.7°DN (airplane nose down), would have resulted in a correct trim condition for the way the airplane was loaded. The improperly set trim caused the nose of the airplane to lift off the runway prematurely.

Probable Cause:

PROBABLE CAUSE: "The pilot induced oscillations and the delay in aborting the takeoff. Factors associated with the accident were the first officer used an improper trim setting and the captain did not identify and correct the setting during the taxi checklist, and the wet runway conditions."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 8 months
Accident number: CHI01FA104
Download report: Summary report

Informationsquelle:
» NTSB id CHI01FA104


Sicherheitsempfehlungen

FAA issued 1 Airworthiness Directive
NTSB issued 4 Safety Recommendations

Show all AD's and Safety Recommendations

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 Detroit-Metropolitan Wayne County Airport, MI to Miami International Airport, FL as the crow flies is 1834 km (1146 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.
languages: languages

Share