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Accident
Last updated: 14 December 2017
Statuts:Enquête Officielle
Date:lundi 22 février 1999
Heure:14:55
Type/Sous-type:Silhouette image of generic B752 model; specific model in this crash may look slightly different
Boeing 757-232
Compagnie:Delta Air Lines
Immatriculation: N682DA
Numéro de série: 26958/518
Année de Fabrication: 1993-01-12 (6 years 1 months)
Equipage:victimes: 0 / à bord: 7
Passagers:victimes: 0 / à bord: 125
Total:victimes: 0 / à bord: 132
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Cincinnati/Northern Kentucky Airport, KY (CVG) (   Etats-Unis d'Amérique)
Phase de vol: Au décollage (TOF)
Nature:Transport de Passagers Nat.
Aéroport de départ:Cincinnati/Northern Kentucky Airport, KY (CVG/KCVG), Etats-Unis d'Amérique
Aéroport de destination:Washington-Ronald Reagan National Airport, DC (DCA/KDCA), Etats-Unis d'Amérique
Numéro de vol:DL338
Détails:
On February 22, 1999, about 1455 eastern standard time, a Boeing 757, N682DA, operated by Delta Air Lines as flight 338, penetrated a flock of birds during takeoff from Cincinnati/Northern Kentucky International Airport, Kentucky. The airplane was substantially damaged. There were no injuries.
The airplane pushed back from the gate, and taxied to runway 18L. While taxing, the crew heard no mention of a bird hazard by another aircraft or air traffic control. The takeoff roll was normal until passing approximately 150 knots; at that point, a flock of starling birds traveling from left to right passed in front of the airplane. The captain advised the first officer of the hazard, and asked him to climb over the flock. The first officer increased pitch angle, but the airplane still penetrated the flock. At the time of penetration, the nose wheel was in the air, and the main landing gear was just becoming airborne. The airplane returned to the airport without further incident. At the time of impact, N1 on the left engine dropped from 81.88 percent to 56.00 percent, and on the right engine, it dropped from 81.25 to 71.63 percent. In both cases, throttle positions remained constant. The bird's roost was not identified, and no airport procedures contributing to the accident were observed.

Probable Cause:

A flock birds were ingested into both engines, resulting in substantial damage to the engines.

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 6 months
Accident number: NYC99LA064
Download report: Summary report

Sources:
» SKYbrary 


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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 Cincinnati/Northern Kentucky Airport, KY et Washington-Ronald Reagan National Airport, DC est de 655 km (409 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 tel qu'ils sont connus à ce jour.
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