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Last updated: 20 April 2021
Statuts:Enquête Officielle
Date:dimanche 12 décembre 1976
Heure:23:26
Type/Sous-type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operated by:Atlantic City Airlines
On behalf of:Allegheny Commuter
Immatriculation: N101AC
Numéro de série: 262
Année de Fabrication: 1969
Moteurs: 2 Pratt & Whitney Canada PT6A-27
Equipage:victimes: 1 / à bord: 2
Passagers:victimes: 3 / à bord: 8
Total:victimes: 4 / à bord: 10
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Wildwood-Cape May County Airport, NJ (WWD) (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Atlantic City-Bader Field, NJ (AIY/KAIY), Etats-Unis d'Amérique
Aéroport de destination:Wildwood-Cape May County Airport, NJ (WWD/KWWD), Etats-Unis d'Amérique
Numéro de vol: 977
Détails:
Weather was poor around Cape May when Flight 977 approached. The sky was obscured with a 400 feet indefinite ceiling and a visibility of 1-1,5 miles existed. The aircraft was making a runway 23 VOR approach when it collided with the ground 4000 feet short of the threshold.

Probable Cause:

PROBABLE CAUSE: "The flight crew's lack of altitude awareness during a circling approach permitting the aircraft's flight path to deviate below a safe approach profile. The aircraft's rate of descent and descent flight path angle increased as a result of windshear encountered during visual approach below minimum descent altitude. The flight crew did not recognize these flight path deviations because they were relying on visual references which were degraded by non-homogeneous fog and on kinesthetic cues which were adversely affected by the aircraft's forward centre of gravity resulting from the improperly loaded aircraft. Contributing to the accident was the lack of company procedures requiring altitude-callouts during the visual portion of an approach."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 years
Accident number: NTSB/AAR-77-12
Download report: Final report

Sources:
» ICAO Circular 146-AN/96 (168-183)


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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 Atlantic City-Bader Field, NJ et Wildwood-Cape May County Airport, NJ est de 55 km (34 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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