Accident
Last updated: 19 April 2014
Statuts:Enquête Officielle
Date:mardi 18 septembre 1984
Heure:11:04
Type/Sous-type:Douglas DC-8-55F
Compagnie:AECA - Aeroservicios Ecuatorianos
Immatriculation: HC-BKN
Numéro de série: 45754/224
Année de Fabrication: 1965
Heures de vol:60070
Cycles:17003
Moteurs: 4 Pratt & Whitney JT3D-
Equipage:victimes: 4 / à bord: 4
Passagers:victimes: 0 / à bord: 0
Total:victimes: 4 / à bord: 4
Victimes au sol:victimes: 49
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Quito-Mariscal Sucre Airport (UIO) (   Equateur) show on map
Phase de vol: Au décollage (TOF)
Nature:Cargo
Aéroport de départ:Quito-Mariscal Sucre Airport (UIO/SEQU), Equateur
Aéroport de destination:Guayaquil-Simon Bolivar Airport (GYE/SEGU), Equateur
Numéro de vol:767-103
Détails:
The DC-8 landed at Quito at 06:52 after a flight from Miami. Shortly after scheduled departure time of 09:00 members of the Ecuadorian Federation of Aircrews (FEDTA) requested and were granted permission to board the aircraft and discuss subjects relating to the aircrews' strike. The 4 Aeroservicios Ecuatorianos crewmembers didn't comply with the strike, after consulting AECA management. After a delay of about 2 hours, the no. 4 engine was started. The crew then ordered the aircraft to be towed to the runway, perhaps in order to hasten the departure. The other engines were started during the towing operation.
Pre-takeoff checks were not (or improperly) carried out. This caused the 0.05deg horizontal stabilizer nose-up to go undetected, while 8deg. nose-up is required for take-off. The DC-8 thus barely climbed after a ground run, extended to 48m beyond the runway end. The horizontal stabilizer struck the wooden structure of the ILS aerial, 83m past the runway 35 end. The aircraft then crashed into houses, 460m past the runway end and 35m to the right of the extended centreline. A total of 25 houses were demolished.


PROBABLE CAUSE: "The incorrect position of the horizontal stabilizer in relation to the aircraft's centre of gravity, which prevented the aircraft from reaching rotation and lift-off speed within the runway distance available.
Factors were: 1) Clearance of the aircraft from Quito was done incorrectly, since the MTOW permissible for the existing runway, wind and temperature conditions, the real take-off weight, the useful load distribution and the position of the aircraft's centre of gravity were not determined.
2) The crew's state of mind may have been a contributing factor in the accident. It is assumed that it prevented the crew from concentrating on all aspects of the operation they were performing."

Sources:
» ICAO Cirular 202-AN/123 p.115-130


Photos

photo of Douglas DC-8-55F HC-BKN
photo of McDonnell Douglas DC-8-55F F-BOLI
F-BOLI moved to the USA in 1982 and was sold to AECA August 1983
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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 Quito-Mariscal Sucre Airport et Guayaquil-Simon Bolivar Airport est de 271 km (170 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.
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