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Last updated: 15 December 2019
Statuts:Enquête Officielle
Date:vendredi 13 octobre 1978
Heure:16:44
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 200
Compagnie:Arctic Guide
Immatriculation: N4048B
Numéro de série: 125
Année de Fabrication: 1968
Moteurs: 2 Pratt & Whitney Canada PT6A-20
Equipage:victimes: 1 / à bord: 1
Passagers:victimes: 0 / à bord: 1
Total:victimes: 1 / à bord: 2
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Barrow, AK (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Charter National
Aéroport de départ:Anaktuvuk Pass Airport, AK (AKP/PAKP), Etats-Unis d'Amérique
Aéroport de destination:Barrow-Point Barrow Airport, AK (PBA), Etats-Unis d'Amérique
Détails:
It was snowing at Barrow as Twin Otter N4048B approached the airport. Ice probably started to accumulate on the aircraft until the airplane stalled and crashed short of the runway. It appeared that the de-ice boots on the horizontal stabilizer were installed improperly.

Probable Cause:

PROBABLE CAUSE:
pilot in command - continued VFR flight into adverse weather conditions
personnel - maintenance,servicing,inspection: inadequate maintenance and inspection
airframe - flight control surfaces: other
miscellaneous acts,conditions - improperly installed
pilot in command - failed to use or incorrectly used misc.equipment
miscellaneous acts,conditions - anti-icing/deicing equipment-improper operation of/or failed to use
pilot in command - misused or failed to use flaps
FACTORS:
personnel - operational supervisory personnel: inadequate flight training-procedures
personnel - operational supervisory personnel: deficiency,company maintained eqpmt,services,regulation
weather - icing conditions-includes sleet,freezing rain,etc.

Sources:
» NTSB


Photos

photo of DHC-6-Twin-Otter-200-N7661
accident date: 13-10-1978
type: de Havilland Canada DHC-6 Twin Otter 200
registration: N7661
 
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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