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ASN Wikibase Occurrence # 27117
Last updated: 27 February 2020
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Date:20-MAY-1976
Time:10:02 EST
Type:Silhouette image of generic PC6T model; specific model in this crash may look slightly different
Pilatus PC-6/B1-H2 Turbo Porter
Owner/operator:Snowy Mountains Hydro-Electric Authority
Registration: VH-SMB
C/n / msn: 657
Fatalities:Fatalities: 3 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Polo Flat, Cooma, NSW -   Australia
Phase: Approach
Nature:Private
Departure airport:Talbingo, NSW
Destination airport:Polo Flat, Cooma, NSW (YPFT)
Investigating agency: ATSB
Narrative:
The aircraft departed Polo Flat at 0750 hours on a planned flight to Khancoban, Talbingo and return. There was dense fog at Polo Flat at this time and the aircraft took off and climbed through fog until it was in clear conditions above. At Cooma Aerodrome, fog which had existed earlier dissipated about 0715 hours and the weather at that location then remained clear.

When the aircraft returned to the Polo Flat area shortly after 0930 hours, fog was still present but it was commencing to break with patches of blue sky visible from time to time. Information regarding the weather conditions was communicated to the, pilot who had established radio contact with the base operations officer at Polo Flat.

Shortly after the aircraft arrived in the area it was observed to make what appeared to be a landing approach into the north but when it had descended to a height of 10 to 15 feet the approach was discontinued and it climbed away. After flying for some time above the fog at a height of about 500 feet the aircraft was heard approaching from the south and the operations officer heard the pilot transmit the words 'hit the...'.

Shortly afterwards the sound of an impact was heard. The port wing of the aircraft had struck the radio transmitter mast 32 feet from the top and the aircraft crashed to the ground in a steep nose-down attitude some 146 metres north of the mast. A fierce fire developed shortly after impact

The three persons on board who were killed were:
John HOWARD (pilot, aged 57)
Evelyn Anne HARVEY (passenger)
Patricia Joy HARVEY (passenger)

ATSB Conclusion: The probable cause of the accident was that the aircraft was operated at an unsafe height in weather conditions in which the pilot was not able to maintain the visual reference necessary to ensure adequate clearance from obstructions.

Sources:

1. http://www.pc-6.com/history/657.htm
2. http://www.atsb.gov.au/publications/investigation_reports/1976/aair/aair197601504.aspx
3. https://en.wikipedia.org/wiki/Cooma%E2%80%93Polo_Flat_Airport#Accidents_and_incidents
4. http://www.pilatus-enthusiasts.com.au/.
5. http://web.archive.org/web/20081121225608/http://www.baaa-acro.com/Pays/A/Australie-1970-1979.htm

Accident investigation:
cover
  
Investigating agency: ATSB
Status: Investigation completed
Duration:
Download report: Final report


Images:


Photo: BASI

Revision history:

Date/timeContributorUpdates
27-Sep-2008 01:00 ASN archive Added
18-Nov-2010 15:16 TB Updated [Cn, Operator, Other fatalities, Location, Departure airport, Source, Narrative]
03-Apr-2014 22:13 Dr. John Smith Updated [Time, Total fatalities, Total occupants, Phase, Nature, Departure airport, Destination airport, Source, Narrative]
03-Apr-2014 22:14 Dr. John Smith Updated [Narrative]
16-Nov-2018 20:31 harro Updated [Photo, Accident report, ]

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