Incident Overview

Date: Saturday 8 December 2018
Aircraft Type: Pilatus Britten-Norman BN-2A-20 Islander
Owner/operator: Par-Avion
Registration Number: VH-OBL
Location: 101 km WSW of Hobart, TAS – ÿ Australia
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 1 / Occupants: 1
Component Affected: Britten-Norman BN-2A IslanderBritten-Norman BN-2A Islander
Investigating Agency: ATSBATSB
Category: Accident
A Britten-Norman BN-2A Islander, operated by Par-Avion, crashed in mountainous terrain in the Southwest National Park, Tasmania, Australia. The pilot, sole occupant, died during the crash. The aircraft departed Hobart Cambridge Airport at 07:48 local time on a repositioning flight to Bathurst Harbour Airport to pick up passengers, with ADS-B data indicating the aircraft tracked to the south-west towards Bathurst Harbour. After passing through the Arthur Range ‘the portals’, the aircraft executed turns below the surrounding terrain. The final data point was recorded at approximately 08:28. Contributing factors included marginal weather limiting the options for exiting the valley, and reduced visual cues due to low cloud conditions, leading to controlled flight into terrain.A Britten-Norman BN-2A Islander, operated by Par-Avion, crashed in mountainous terrain in the Southwest National Park, Tasmania, Australia. The pilot, sole occupant, died during the crash. The aircraft departed Hobart Cambridge Airport at 07:48 local time on a repositioning flight to Bathurst Harbour Airport to pick up passengers, with ADS-B data indicating the aircraft tracked to the south-west towards Bathurst Harbour. After passing through the Arthur Range ‘the portals’, the aircraft executed turns below the surrounding terrain. The final data point was recorded at approximately 08:28. Contributing factors included marginal weather limiting the options for exiting the valley, and reduced visual cues due to low cloud conditions, leading to controlled flight into terrain.

Description

A Britten-Norman BN-2A Islander, operated by Par-Avion, impacted mountainous terrain in the Southwest National Park in Tasmania, Australia. The pilot, who was the sole occupant, died in the crash. The aircraft departed Hobart Cambridge Airport in Tasmania at 07:48 hours local time on a repositioning flight to Bathurst Harbour Airport to pick up passengers. ADS-B position and altitude data showed the aircraft tracked to the south-west towards Bathurst Harbour. At about 08:16, the aircraft approached a gap in the Arthur Range known as ‘the portals’. The portals are a saddle (lowest area) between the Eastern and Western Arthur Range, and was an optional route that the airline used between Cambridge and Bathurst Harbour when the cloud base prevented flight over the mountain range. After passing through the portals, the aircraft proceeded to conduct a number of turns below the height of the surrounding highest terrain. The final data point recorded was at about 08:28. Contributing factors: – The pilot continued descending over the Arthur Range saddle to a lower altitude than previous flights, likely due to marginal weather. This limited the options for exiting the valley surrounded by high terrain. – While using a route through the Arthur Range due to low cloud conditions, the pilot likely encountered reduced visual cues in close proximity to the ground, as per the forecast conditions. This led to controlled flight into terrain while attempting to exit the range.

Source of Information

https://www.abc.net.au/news/2018-12-09/wreckage-of-missing-plane-found-in-tasmania/10597750https://www.abc.net.au/news/2018-12-09/wreckage-of-missing-plane-found-in-tasmania/10597750

Primary Cause

Marginal weather conditions limited the pilot’s ability to exit the valley.Marginal weather conditions limited the pilot’s ability to exit the valley.

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