Accident
Last updated: 29 August 2014
Statuts:Enquête Officielle
Date:mardi 3 février 1959
Heure:23:56
Type/Sous-type:Lockheed L-188A Electra
Compagnie:American Airlines
Immatriculation: N6101A
Numéro de série: 1015
Année de Fabrication: 1958
Heures de vol:302
Moteurs: 4 Allison 501-D13
Equipage:victimes: 2 / à bord: 5
Passagers:victimes: 63 / à bord: 68
Total:victimes: 65 / à bord: 73
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:1,5 km (0.9 milles) NE de New York-La Guardia Airport, NY (LGA) (   Etats-Unis d'Amérique) show on map
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Chicago-O'Hare International Airport, IL (ORD/KORD), Etats-Unis d'Amérique
Aéroport de destination:New York-La Guardia Airport, NY (LGA/KLGA), Etats-Unis d'Amérique
Numéro de vol: 320
Détails:
The crew of Flight AA320 were carrying out an ILS backcourse approach to New York-La Guardia (LGA) runway 22 with autopilot engaged. The Lockheed Electra aircraft descended until it struck the water some 5000 feet short of the runway and 600 feet to the right of the extended centreline. Ground speed on impact was 150mph and undercarriage and flaps were extended. The wreckage sank in 10m deep East River. Weather at the time of the accident was marginal with a 300-400 feet ceiling, 2 miles visibility in light rain and fog with a 6 knots SSW wind.

PROBABLE CAUSE: "The Board determines the probable cause of this accident was premature descent below landing minimums which was the result of preoccupation of the crew on particular aspects of the aircraft and its environment to the neglect of essential flight instrument references for attitude and height above the approach surface.
Contributing factors were:
1. Limited experience of the crew with the aircraft type;
2. Faulty approach technique in which the autopilot was used in the heading mode to or almost to the surface;
3. Erroneous setting of the captain's altimeter;
4. Marginal weather in the approach area;
5. Possible misinterpretation of altimeter and rate of descent indicator; and
6. Sensory illusion with respect to height and attitude resulting from visual reference to the few lights existing in the approach area."

Sources:
» ICAO Accident Digest Circular 62-AN/57 (87-98)


Opérations de secours

CAB issued 2 Safety Recommendations

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Photos

photo of Lockheed L-188A Electra N6101A
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Plan
Ce plan montre l'aéroport de départ ainsi que la supposé 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-La Guardia Airport, NY est de 1169 km (731 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 tels qui sont connus à ce jour.
languages: English Français Nederlands Deutsch Espanol

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