ASN logo
Last updated: 30 November 2021
Date:Thursday 29 December 1977
Type:Silhouette image of generic VISC model; specific model in this crash may look slightly different
Vickers 764D Viscount
Operator:SAN Ecuador - Servicios Aéreos Nacionales
Registration: HC-BEM
MSN: 183
First flight: 1956
Crew:Fatalities: 4 / Occupants: 4
Passengers:Fatalities: 20 / Occupants: 20
Total:Fatalities: 24 / Occupants: 24
Aircraft damage: Damaged beyond repair
Location:near Cuenca (   Ecuador)
Phase: En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Guayaquil-Simon Bolivar Airport (GYE/SEGU), Ecuador
Destination airport:Cuenca Airport (CUE/SECU), Ecuador
The pilot had filed an IFR flight plan but continued VFR after passing Puna. Weather was poor however, and the aircraft flew into a hill.

VFR flight in IMC
Controlled Flight Into Terrain (CFIT) - Mountain


photo of Vickers-764D-Viscount-N905G
accident date: 29-12-1977
type: Vickers 764D Viscount
registration: N905G

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 Guayaquil-Simon Bolivar Airport to Cuenca Airport as the crow flies is 128 km (80 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

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.
languages: languages


Vickers Viscount

  • 445 built
  • 112th loss
  • 57th fatal accident
  • 24th worst accident (at the time)
  • 30th worst accident (currently)
» safety profile

  • 8th worst accident (at the time)
  • 14th worst accident (currently)
» safety profile