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Accident
Last updated: 18 October 2017
Statuts:Enquête Officielle
Date:lundi 9 février 1998
Heure:09:54
Type/Sous-type:Silhouette image of generic B722 model; specific model in this crash may look slightly different
Boeing 727-223
Compagnie:American Airlines
Immatriculation: N845AA
Numéro de série: 20986/1125
Année de Fabrication: 1975-05-06 (22 years 10 months)
Heures de vol:59069
Moteurs: 3 Pratt & Whitney JT8D-9A
Equipage:victimes: 0 / à bord: 6
Passagers:victimes: 0 / à bord: 115
Total:victimes: 0 / à bord: 121
Dégats de l'appareil: Substantiels
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Chicago-O'Hare International Airport, IL (ORD) (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Kansas City International Airport, MO (MCI/KMCI), Etats-Unis d'Amérique
Aéroport de destination:Chicago-O'Hare International Airport, IL (ORD/KORD), Etats-Unis d'Amérique
Numéro de vol:AA1340
Détails:
American Airlines Flight 1340 crashed short of the runway while on a coupled instrument landing system (ILS) category II approach to runway 14R at Chicago-O’Hare. The approach was normal until the airplane passed through 200 feet above ground level (agl), where the airplane started a pitch oscillation that grew in time. The airplane descended below the ILS glide slope, then climbed above it, and finally descended below it again, impacting the ground 300 feet short of the runway threshold. Upon impact, the airplane slid over the threshold and then off the right side of the runway, where it came to rest..
The weather at the time of the approach was ceiling overcast at 100 feet, 1/2-mile visibility in freezing fog, temperature and dew point were 28 degrees F. The runway 14R RVR was 1,400 feet variable 1800 feet.

Probable Cause:

PROBABLE CAUSE: "The failure of the flight crew to maintain a proper pitch attitude for a successful landing or go-around. Contributing to the accident were the divergent pitch oscillations of the airplane, which occurred during the final approach and were the result of an improper autopilot desensitization rate."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 3 years and 3 months
Accident number: DCA98MA023
Download report: Summary report


Opérations de secours

NTSB issued 7 Safety Recommendations

Show all AD's and Safety Recommendations

Photos

photo of Boeing 727-223 N845AA
American Airlines B727-223 N845AA following the accident; Photo By Michael F. McLaughlin / MikePhotos Airliner Images
photo of Boeing 727-223 N845AA
photo of Boeing 727-223 N845AA
photo of Boeing 727-223 N845AA
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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 Kansas City International Airport, MO et Chicago-O'Hare International Airport, IL est de 643 km (402 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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Boeing 727

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  • 79ème loss
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