ASN Aircraft accident BAC One-Eleven 420EL LV-JGY San Carlos de Bariloche, RN
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Status:Accident investigation report completed and information captured
Date:Monday 21 November 1977
Type:Silhouette image of generic BA11 model; specific model in this crash may look slightly different
BAC One-Eleven 420EL
Operator:Austral Lineas Aéreas
Registration: LV-JGY
MSN: 155
First flight: 1968
Total airframe hrs:21272
Engines: 2 Rolls-Royce Spey 511-14W
Crew:Fatalities: 5 / Occupants: 5
Passengers:Fatalities: 41 / Occupants: 74
Total:Fatalities: 46 / Occupants: 79
Aircraft damage: Damaged beyond repair
Location:21 km (13.1 mls) E of San Carlos de Bariloche, RN (   Argentina)
Phase: Approach (APR)
Nature:Domestic Non Scheduled Passenger
Departure airport:Buenos Aires-Jorge Newbery Airport, BA (AEP/SABE), Argentina
Destination airport:San Carlos de Bariloche International Airport, RN (BRC/SAZS), Argentina
Flightnumber: 9
BAC One-Eleven LV-JGY was one of three chartered aircraft flying from Buenos Aires to San Carlos de Bariloche. LV-JGY was, at 22:53, the second plane to depart from Buenos Aires. While climbing to the assigned cruising altitude of FL350, the airplane suffered pressurization problems. This forced the crew to request FL290. At 00:40 the flight was cleared to descend to FL200. Nine minutes later the crew requested and was granted a direct ILS approach. The ILS approach to runway 28 was discontinued because of problems with the ILS reception. The pilot then requested a visual runway 10 approach. Wind was 270deg/15 knots and the pilot decided to use ILS procedure no. 2 and try to land at runway 28 anyway. Last radio contact was when the pilot reported abeam the VOR beacon. The airplane collided with terrain near Cerro Pichileufú.

Probable Cause:

PROBABLE CAUSE; "The accident was caused by the collision of the aircraft with the ground during the final approach to Bariloche runway after an improper and premature descent which was below safety limits.
The accident can be attributed to a procedural error by the crew during the final approach in that they abandoned the ILS procedure, an action strongly and unduly influenced by the interruption of the VOR signal and also probably by the state of mind of the pilot-in-command."

Premature descent
Controlled Flight Into Terrain (CFIT) - Mountain

» Informe Final de Accidente de Aviación / Junta de Investigación de Accidentes de Aviación Civil (JIAAC)


photo of BAC-One-Eleven-420EL-LV-JGY
accident date: 21-11-1977
type: BAC One-Eleven 420EL
registration: LV-JGY

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 Buenos Aires-Jorge Newbery Airport, BA to San Carlos de Bariloche International Airport, RN as the crow flies is 1331 km (832 miles).
Accident location: Exact; deduced from official accident report.

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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BAC One-Eleven

  • 245 built
  • 14th loss
  • 8th fatal accident
  • The worst accident (at the time)
  • 2nd worst accident (currently)
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