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Last updated: 15 June 2021
Statuts:Enquête Officielle
Date:mardi 12 décembre 2017
Heure:07:35
Type/Sous-type:Silhouette image of generic MD88 model; specific model in this crash may look slightly different
McDonnell Douglas MD-88
Compagnie:Delta Air Lines
Immatriculation: N924DL
Numéro de série: 49711/1492
Année de Fabrication: 1988
Heures de vol:74998
Moteurs: 2 Pratt & Whitney JT8D-219
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 56
Total:victimes: 0 / à bord: 61
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Detroit-Metropolitan Wayne County Airport, MI (DTW) (   Etats-Unis d'Amérique)
Phase de vol: En attente (STD)
Nature:Transport de Passagers Nat.
Aéroport de départ:Detroit-Metropolitan Wayne County Airport, MI (DTW/KDTW), Etats-Unis d'Amérique
Aéroport de destination:Raleigh/Durham International Airport, NC (RDU/KRDU), Etats-Unis d'Amérique
Numéro de vol:DL2421
Détails:
Delta Air Lines flight 2421, a McDonnell Douglas MD-88, after being pushed back from the gate, with the towbar still connected, was substantially damaged after the airplane moved forward after engine start and struck the tug at Detroit Metropolitan Airport (DTW), Michigan, USA. There were no injuries to the 61 passengers and crew onboard.

During pushback, the tug driver informed the flight crew they were cleared to start. After the left engine was started, the airplane started to unexpectedly move forward. Both flight crew members were focused inside the cockpit, running checklists, when the tug driver asked if the brake was set on the airplane. The captain responded "no" and the first officer then noticed the position of the tug and told the captain that they needed to stop the airplane. The airplane struck the tug before stopping. After the airplane's brake was set, the flight crew noticed that the engine throttles were not at idle as expected. Ground conditions were reported as slippery. The tug struck the right forward lower fuselage causing damage to the pressure vessel (skin, stringers, and frames).

Probable Cause:

Probable Cause: Failure of the flight crew to confirm the left engine throttle lever was at idle during engine start.

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 7 months
Accident number: DCA18CA042
Download report: Summary report


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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Detroit-Metropolitan Wayne County Airport, MI et Raleigh/Durham International Airport, NC est de 801 km (501 miles).
Accident location: Approximate; accuracy within a few kilometers.

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 tel qu'ils sont connus à ce jour.
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