Estado:	Final
Fecha:	18 SEP 1984
Hora:	11:04
Tipo:	Douglas DC-8-55F
Operador:	AECA - Aeroservicios Ecuatorianos
Registración:	HC-BKN
Numéro de série:	45754/224
Año de Construcción:	1965
Horas Totales de la Célula:	60070
Ciclos:	17003
Motores:	4 Pratt & Whitney JT3D-
Tripulación:	Fatalidades: 4 / Ocupantes: 4
Pasajeros:	Fatalidades: 0 / Ocupantes: 0
Total:	Fatalidades: 4 / Ocupantes: 4
Víctimas en Tierra:	Fatalidades: 49
Daños en la Aeronave:	Anulado
Consecuencias:	Written off (damaged beyond repair)
Ubicación:	Quito-Mariscal Sucre Airport (UIO) (Ecuador)
Fase:	Despegue (TOF)
Naturaleza:	Carga
Aeropuerto de Salida:	Quito-Mariscal Sucre Airport (UIO/SEQU), Ecuador
Aeropuerto de Llegada:	Guayaquil-Simon Bolivar Airport (GYE/SEGU), Ecuador
Número de Vuelo:	767-103

Descripción:
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."

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