Accident
Last updated: 25 October 2014
Status:Schlussbericht
Datum:Dienstag 18 September 1984
Zeit:11:04
Flugzeugtyp:Douglas DC-8-55F
Fluggesellschaft:AECA - Aeroservicios Ecuatorianos
Kennzeichen: HC-BKN
Werknummer: 45754/224
Baujahr: 1965
Betriebsstunden:60070
Anzahl Zyklen der Zelle:17003
Triebwerk: 4 Pratt & Whitney JT3D-
Besatzung:Todesopfer: 4 / Insassen: 4
Fluggäste:Todesopfer: 0 / Insassen: 0
Gesamt:Todesopfer: 4 / Insassen: 4
Opfer am Boden:Todesopfer: 49
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:Quito-Mariscal Sucre Airport (UIO) (   Ecuador) show on map
Flugphase: Start (TOF)
Betriebsart:Frachtflug
Flug von:Quito-Mariscal Sucre Airport (UIO/SEQU), Ecuador
Flug nach:Guayaquil-Simon Bolivar Airport (GYE/SEGU), Ecuador
Flugnummer:767-103
Unfallbericht:
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."

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


Fotos

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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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Quito-Mariscal Sucre Airport to Guayaquil-Simon Bolivar Airport as the crow flies is 271 km (170 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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