40 Years ago today: On 23 April 1979 a SAETA Vickers Viscount went missing on a Quito-Cuenca flight; killing all 57 occupants.

Date:Monday 23 April 1979
Time:ca 07:45
Type: Vickers 785D Viscount
Operator:SAETA
Registration:HC-AVP
C/n / msn:329
First flight:1957-06-23 (21 years 10 months)
Engines:Rolls-Royce Dart 510
Crew:Fatalities: 5 / Occupants: 5
Passengers:Fatalities: 52 / Occupants: 52
Total:Fatalities: 57 / Occupants: 57
Aircraft damage:Destroyed
Aircraft fate:Written off (damaged beyond repair)
Location:Pastaza Province (   Ecuador)
Crash site elevation:5500 m (18045 feet) amsl
Phase:En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Quito-Mariscal Sucre Airport (UIO/SEQU), Ecuador
Destination airport:Cuenca Airport (CUE/SECU), Ecuador
Flightnumber:011

Narrative:
Went missing on a Quito-Cuenca flight and was found 5 years later on high ground, 25nm off track at an elevation of 18000 feet.
The aircraft departed Quito at 07:08 in the morning and was expected to land at Cuenca at 08:00.