Statuts:	Enquête Officielle
Date:	17 JUN 1979
Heure:	22:48 EDT
Type/Sous-type:	de Havilland Canada DHC-6 Twin Otter 300
Compagnie:	Air New England
Immatriculation:	N383EX
Numéro de série:	245
Année de Fabrication:	1969
Heures de vol:	17058
Moteurs:	2 Pratt & Whitney Canada PT6A-27
Equipage:	victimes: 1 / à bord: 2
Passagers:	victimes: 0 / à bord: 8
Total:	victimes: 1 / à bord: 10
Dégats de l'appareil:	Perte Totale
Conséquences:	Written off (damaged beyond repair)
Lieu de l'accident:	Hyannis, MA (Etats-Unis d'Amérique)
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:	Hyannis-Barnstable Airport, MA (HYA/KHYA), Etats-Unis d'Amérique
Numéro de vol:	248

Détails:
The flight crew reported for duty at 08:45 in the morning for 12 legs out of Hyannis, MA. They arrived back at Hyannis at 18:31. The crew then learned they were had to fly 2 additional flights of 2 legs each (Hyannis-New Bedford-New York-LGA v.v.) The captain was visibly upset about this. On the return flight from La Guardia the crew decided to skip New Bedford because of poor weather there. At 21:32 the flight departed La Guardia for Hyannis. At 22.39 the crew were given Hyannis weather, which included: indefinite ceiling of 200 feet, sky obscured, visibility 3/4mile in fog, wind 210deg at 10 knots. Five minutes later the aircraft was vectored for a runway 24 ILS approach. The aircraft descended below the glidepath and crashed into a heavily wooded area.

PROBABLE CAUSE: "The failure of the flight crew to recognize and react in a timely manner to the gross deviation from acceptable approach parameters, resulting in a continuation of the descent well below the decision height during a precision approach without visual contact with the runway environment.
Although the Board was unable to determine conclusively the reason for the failure to recognize and react to the gross deviation, it is believed that the degraded physiological condition of the captain seriously impaired his performance. Also, the lack of adequate crew coordination practices and procedures contributed to the first officer's failure to detect and react to the situation in a timely manner."

Sources:
» Flight International 08.03.1980 (732)
» NTSB-AAR-80-1