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Accident
Last updated: 18 October 2017
Statuts:Enquête Officielle
Date:lundi 8 novembre 1965
Heure:19:02
Type/Sous-type:Silhouette image of generic B721 model; specific model in this crash may look slightly different
Boeing 727-23
Compagnie:American Airlines
Immatriculation: N1996
Numéro de série: 18901/153
Année de Fabrication: 1965-06-15 (5 months)
Heures de vol:938
Moteurs: 3 Pratt & Whitney JT8D-7
Equipage:victimes: 5 / à bord: 6
Passagers:victimes: 53 / à bord: 56
Total:victimes: 58 / à bord: 62
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:3 km (1.9 milles) N of Cincinnati-Greater Cincinnati, OH (   Etats-Unis d'Amérique)
Élévation des lieux de l'accident: 203 m (666 feet) amsl
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:New York-La Guardia Airport, NY (LGA/KLGA), Etats-Unis d'Amérique
Aéroport de destination:Cincinnati/Northern Kentucky Airport, KY (CVG/KCVG), Etats-Unis d'Amérique
Numéro de vol:AA383
Détails:
American Airlines Flight 383, a Boeing 727, N1996, departed New York-LaGuardia Airport (LGA) at 17:38 for a scheduled flight to the Greater Cincinnati Airport (CVG). It was to be an IFR flight with a requested cruising altitude of 35,000 ft and an estimated time en route of 1 hour 23 minutes. The en route part of the flight was uneventful.
About 18:55, when the flight was about 27 miles southeast of the Greater Cincinnati Airport, radar traffic control was effected by Cincinnati Approach Control. Subsequent descent clearances were issued to the flight and at 18:57 flight 383 reported: "...out of five for four and how about a control VFR, we have the airport." The Approach Controller replied: "... continue to the airport and cleared for a visual approach to runway one eight, precip lying just to the west boundary of the airport and its ... southbound." The crew acknowledged the clearance and the controller cleared the flight to descend to 2,000 feet at their discretion. At 18:58 Approach Control advised the flight that its radar position was six miles southeast of the airport and instructed them to change to the Cincinnati tower frequency. One minute later the tower controller cleared the flight to land. During the approach the visibility at the airport deteriorated as it began to rain. The tower controller reported: "American three eighty three we are beginning to pickup a little rain right now." At 19:01:14 the tower asked: "American three eighty three you still got the runway Okay?" To which the crew replied "Ah just barely we'll ah pickup the ILS here". At this point, thirteen seconds before impact, the 727 was descending at a rate of 2100 feet/min to an altitude of approximately 725 feet (165 ft below published field elevation) with the airspeed holding at 160 knots. The descent rate then decreased to about 625 ft/min for approximately the last 10 seconds of flight with the airspeed decreasing to 147 knots at impact.
The right wing struck a tree at an altitude of 665 feet msl which is approximately 225 feet below the published field elevation. The aircraft slid a distance of 340 feet relatively intact through scrub trees and ground foilage before impacting and coming to rest amidst a group of larger trees. Following impact an intense ground fire erupted which completely destroyed the aircraft cabin forward of the tail section.

Probable Cause:

PROBABLE CAUSE: "The failure of the crew to properly monitor the altimeters during a visual approach into deteriorating visibility conditions."

Sources:
» ICAO Circular Volume III 88/74 (88-108)


Photos

photo of Boeing 727-23 N1996
Three dimensional flight path
photo of Boeing 727-23 N1996
Composite flight track
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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 New York-La Guardia Airport, NY et Cincinnati/Northern Kentucky Airport, KY est de 933 km (583 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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