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Accident description
Last updated: 25 September 2017
Status:Final
Date:Monday 13 March 1967
Time:17:10 UTC
Type:Silhouette image of generic VISC model; specific model in this crash may look slightly different
Vickers 818 Viscount
Operator:South African Airways - SAA
Registration: ZS-CVA
C/n / msn: 317
First flight: 1958
Engines: 4 Rolls-Royce Dart 525
Crew:Fatalities: 5 / Occupants: 5
Passengers:Fatalities: 20 / Occupants: 20
Total:Fatalities: 25 / Occupants: 25
Airplane damage: Damaged beyond repair
Location:2,4 km (1.5 mls) SE off Kayser's Beach (   South Africa)
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Port Elizabeth Airport (PLZ/FAPE), South Africa
Destination airport:East London Airport (ELS/FAEL), South Africa
Flightnumber: 406
Narrative:
Vickers Viscount ZS-CVA, named "Rietbok", was on a scheduled public transport flight SA406 from Port Elizabeth to Johannesburg via East London and Bloemfontein, South Africa.
At Port Elizabeth crew took on board 2,000 lb of fuel in excess of the normal sector fuel uplift, on the basis that they may had to overfly East London and proceed to Bloemfontein due to poor weather at East London.
The flight made a normal takeoff from Port Elizabeth at 16:41 UTC and climbed to Flight Level 90. At 16:58 UTC the aircraft contacted East London Airport Control and was given a weather report: 8/8ths Nimbo Stratus at 200 feet to 300 feet overhead, lowering on the approaches to runway 28; continuous drizzle; visibility 3/4 of a mile; ground temperature plus 16°C.; QNH 1025.
At 16:59 UTC the aircraft acknowledged the weather and requested descent clearance from Flight Level 90. Clearance was given by East London Tower and acknowledged.
At 17:07 UTC the flight was cleared for a runway 10 approach. The last radio transmission was at 17:09 UTC when the flight reported at 2000 feet with the coast line in sight. The airplane impacted the sea at high speed about 17:10 UTC.
Bits of floating wreckage, consisting mainly of cabin interior fittings, were recovered by naval vessels and other pieces were washed ashore.
The main wreckage of the aircraft is believed to he lying at a depth of between 180 and 220 feet, approximately 1˝ miles off-shore. Extensive salvage operations were attempted, but were hindered by murky water, a current up to 8 kts. and dangerous sea conditions.

Probable Cause:

PROBABLE CAUSE: "The available data is not sufficient for the originating cause of the accident to be determined with any degree of probability. In the opinion of the Board certain possibilities can be excluded as being consistent with the evidence and/or as being remote and improbable; among these possibilities are structural failure, failure of the controls, or control surfaces, multiple engine failure, instrument failure, explosion, fire, a 'bad weather' accident and pilot error.
However, on the evidence the Board cannot exclude as the originating cause of the accident a heart attack suffered by the captain in the air, with ensuing loss of control of the aircraft, and with the first officer being unable in the time available to regain sufficient control to prevent contact with the sea."
It was later rumored that the aircraft crashed as a result of a structural failure, because comparable accidents happened during that time.

Accident investigation:
cover
Investigating agency: Board of Inquiry
Status: Investigation completed
Duration: 142 days (5 months)
Accident number: Accident Investigation Report
Download report: Final report

Classification:
Flightcrew incapacitation
Loss of control

Sources:
» Rietbok: new evidence (Daily Dispatch, April 20, 2001)


Follow-up / safety actions

Board of Inquiry issued 5 Safety Recommendations

Show all AD's and Safety Recommendations

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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 Port Elizabeth Airport to East London Airport as the crow flies is 230 km (144 miles).
Accident location: Exact; as reported in the 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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Vickers Viscount

  • 445 built
  • 62nd loss
  • 35th fatal accident
  • 13th worst accident (at the time)
  • 29th worst accident (currently)
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 South Africa
  • The worst accident (at the time)
  • 2nd worst accident (currently)
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