Accident Cessna 172H VH-KWN, Saturday 5 January 1974
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Date:Saturday 5 January 1974
Time:16:28
Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different    
Cessna 172H
Owner/operator:Peninsula Air Services
Registration: VH-KWN
MSN:
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Destroyed
Category:Accident
Location:Mud Islands, Port Phillip Bay, VIC -   Australia
Phase: Unknown
Nature:Survey
Departure airport:YMMB
Destination airport:YMMB
Investigating agency: BASI
Confidence Rating: Accident investigation report completed and information captured
Narrative:
Attempts were made to obtain photographs of VH-MJO with sharks in the background but these were unsuccessful. It was then decided that VH-KWN would descend to 500 feet to photograph the school of sharks, while VH-MJO remained clear of the other aircraft. The pilot of VH-KWN extended flap to 30 degrees and reduced speed from about 70 knots to 55-60 knots, using just sufficient engine power to maintain 500 feet altitude. Two left hand racecourse orbits were flown around the sharks and, during the third orbit, while on a north-easterly heading, the pilot had a discussion with the photographer regarding the positioning of the aircraft and then looked out to the right to check the location of the other aircraft. As a further left turn was initiated the pilot looked at the aircraft instruments and noticed that the altitude had decreased to 300 feet and that the airspeed was also low. The port wing dropped and the stall warning was heard to operate. Despite the initial application of corrective aileron, and the subsequent application of right rudder, forward stick and engine power, the aircraft lost height rapidly and struck the water in a nose down, port wing low attitude.

Accident investigation:
cover
  
Investigating agency: BASI
Report number: 
Status: Investigation completed
Duration:
Download report: Final report

Sources:

https://www.atsb.gov.au/publications/investigation_reports/1974/aair/aair197403096/
https://www.atsb.gov.au/media/24766/197403096.pdf

Revision history:

Date/timeContributorUpdates
30-Jul-2018 23:10 Pineapple Added

Corrections or additions? ... Edit this accident description

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