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Accident
Last updated: 22 October 2017
Statuts:Enquête Officielle
Date:mercredi 20 octobre 2004
Heure:20:29
Type/Sous-type:Silhouette image of generic B741 model; specific model in this crash may look slightly different
Boeing 747-132SF
Compagnie:Kalitta Air
Immatriculation: N709CK
Numéro de série: 20247/159
Année de Fabrication: 1971-09-22 (33 years 1 months)
Heures de vol:93549
Moteurs: 4 Pratt & Whitney JT9D-7A
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 5
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:au dessus de Lake Michigan, MI (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Cargo
Aéroport de départ:Chicago-O'Hare International Airport, IL (ORD/KORD), Etats-Unis d'Amérique
Aéroport de destination:New York-John F. Kennedy International Airport, NY (JFK/KJFK), Etats-Unis d'Amérique
Numéro de vol: 825
Détails:
Kalitta Air Flight 825 departed from Chicago O'Hare International (ORD) at 20:10, and was en route to New York-JFK. While climbing through about 15,000 feet over Lake Michigan the crew heard a loud bang, the airplane yawed to the left, and the number one engine cockpit indications showed that the engine had lost all power. A visual inspection by the crew of the number one engine to check for damage revealed the pylon was still in place, but the engine was missing. The airplane diverted to DTW and landed without further incident.
After the airplane landed, the examination of the pylon revealed the forward portion was damaged with the entire forward bulkhead including the forward engine
mounts separated from the airplane. The examination The examination also revealed that the top of the mount rails and circumferentially inclusive of the four
mount bolts remained attached to the aft mount on the pylon.

Probable Cause:

PROBABLE CAUSE: "The number one engine separated from the airplane during climb due to the uncontained separation of a portion of the second stage turbine disk rim after the second stage turbine vanes contacted the disk. The second stage turbine vanes contacted the second stage turbine disk due to the operator's inadequate inspection of the high pressure turbine module and the improper repair of the module by unknown maintenance personnel."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 3 years and 1 months
Accident number: CHI05MA011
Download report: Summary report

Sources:
» Kalitta Air, NTSB


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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 Chicago-O'Hare International Airport, IL et New York-John F. Kennedy International Airport, NY est de 1180 km (737 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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