67 Years ago today: On 16 June 1955 an Panair do Brasil Lockheed Constellation suffered a CFIT accident at night near Asuncion, Paraguay, killing 16 of 24 occupants.

Date:Thursday 16 June 1955
Time:ca 01:15
Type:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed L-149 Constellation
Operator:Panair do Brasil
Registration:PP-PDJ
MSN:2032
First flight:1946
Crew:Fatalities: 7 / Occupants: 10
Passengers:Fatalities: 9 / Occupants: 14
Total:Fatalities: 16 / Occupants: 24
Aircraft damage:Damaged beyond repair
Location:12,9 km (8.1 mls) SW of Asunción-Silvio Pettirossi International Airport (ASU) (   Paraguay)
Phase:Approach (APR)
Nature:International Scheduled Passenger
Departure airport:São Paulo-Congonhas Airport, SP (CGH/SBSP), Brazil
Destination airport:Asunción-Silvio Pettirossi International Airport (ASU/SGAS), Paraguay
Flightnumber:263

Narrative:
Lockheed Constellation PP-PDJ was carrying out a scheduled Panair flight from London to Buenos Aires with stops at Paris, Lisbon, Dakar, Recife, Rio de Janeiro, São Paulo and Asuncion. The aircraft was on the São Paulo – Asuncion leg of this flight when the crew contacted Asuncion at 01:05. They were cleared to land on runway 02 and were told to report when on finals. Last contact was at 01:15. The aircraft was descending through clouds until the left wing hit a 12 metre tree. Part of the wing broke off and the plane continued knocking down coconut trees. Some 500 metres from the initial point of impact, the aircraft came into violent contact with a tree at ground level, uprooting it, so that the fuselage fell over in a position facing about 30° to the left of the path of flight. At this point the fuselage caught fire.
Probable Cause:

PROBABLE CAUSE: “1) The accident was due to a piloting error in making the approach circuit on instruments. An error in timing resulted in the final approach being initiated at too great a distance from the airport. Proof of this was provided by the fact that the landing gear was found extended, the flaps down, the mixture control set at ‘rich’, all of which indicated that the aircraft was in the ready to land condition. 2) The accident was caused by personnel failure: pilot error. The pilot did not follow the recommended procedure for instrument final approach and he descended below the height prescribed in the final approach chart. Concurring factors were: 1) flight fatigue, due to excess flight time. The pilot flew in the preceding months an average of 113 hours. 2) The crew did not follow the normal cockpit procedure. The co-pilot did not set his altimeter to the received altimeter settings. 3) Bad layout of the face of the chronometer of the instrument panel, which did make the readings more difficult.”