Captains Flat - Captains Flat

While completing a local topdressing flight, the pilot lost control of the airplane that crashed in a field. The airplane was destroyed and the pilot, sole on board, was killed. It seems that the aircraft was working and part-way through an agricultural procedure turn, pulling probably 2G+ as normal, when the fin attachment bolts failed. The investigation concluded that apparently the fin and rudder had rolled through about 90 degrees and rested (horizontally) on the tailplane and elevator. The pilot would have been immediately deprived of vertical and directional control at that instant. Being at low altitude, there would have been no means of recovering, even if some vertical control could have been achieved. The wreckage was beyond economic repair and the aircraft was written off at that time. However, the investigation did lead to fleet-wide inspection of all fin attachment bolts and some worn/cracked bolts were revealed. An Airworthiness Directive was immediately issued and all the DHC-2 Beavers were grounded until the inspections and bolt replacements had been completed. While the Beaver was built as a rugged bush aircraft, it was subjected to repeated overload operations from rough agricultural airstrips and subjected to high aerodynamic G forces in every day of agricultural operations. Source: Geoff Goodall.

Flight / Schedule

Captains Flat - Captains Flat

Registration

VH-MLB

MSN

1567

Year of Manufacture

1964

Date

December 6, 1979 at 12:00 AM

Type

CRASH

Flight Type

Spraying (Agricultural)

Flight Phase

Flight

Crash Site

Plain, Valley

Crash Location

Captains Flat New South Wales

Region

Oceania • Australia

Coordinates

-35.5922°, 149.4453°

Crash Cause

Technical failure

Narrative Report

On December 6, 1979 at 12:00 AM, Captains Flat - Captains Flat experienced a crash involving De Havilland DHC-2 Beaver, operated by Aerial Agriculture, with the event recorded near Captains Flat New South Wales.

The flight was categorized as spraying (agricultural) and the reported phase was flight at a plain, valley crash site.

1 people were known to be on board, 1 fatalities were recorded, 0 survivors were identified or estimated. This corresponds to an estimated fatality rate of 100.0%.

Crew on board: 1, crew fatalities: 1, passengers on board: 0, passenger fatalities: 0, other fatalities: 0.

The listed crash cause is technical failure. While completing a local topdressing flight, the pilot lost control of the airplane that crashed in a field. The airplane was destroyed and the pilot, sole on board, was killed. It seems that the aircraft was working and part-way through an agricultural procedure turn, pulling probably 2G+ as normal, when the fin attachment bolts failed. The investigation concluded that apparently the fin and rudder had rolled through about 90 degrees and rested (horizontally) on the tailplane and elevator. The pilot would have been immediately deprived of vertical and directional control at that instant. Being at low altitude, there would have been no means of recovering, even if some vertical control could have been achieved. The wreckage was beyond economic repair and the aircraft was written off at that time. However, the investigation did lead to fleet-wide inspection of all fin attachment bolts and some worn/cracked bolts were revealed. An Airworthiness Directive was immediately issued and all the DHC-2 Beavers were grounded until the inspections and bolt replacements had been completed. While the Beaver was built as a rugged bush aircraft, it was subjected to repeated overload operations from rough agricultural airstrips and subjected to high aerodynamic G forces in every day of agricultural operations. Source: Geoff Goodall.

Aircraft reference details include registration VH-MLB, MSN 1567, year of manufacture 1964.

Geospatial coordinates for this crash are approximately -35.5922°, 149.4453°.

Fatalities

Total

1

Crew

1

Passengers

0

Other

0

Crash Summary

While completing a local topdressing flight, the pilot lost control of the airplane that crashed in a field. The airplane was destroyed and the pilot, sole on board, was killed. It seems that the aircraft was working and part-way through an agricultural procedure turn, pulling probably 2G+ as normal, when the fin attachment bolts failed. The investigation concluded that apparently the fin and rudder had rolled through about 90 degrees and rested (horizontally) on the tailplane and elevator. The pilot would have been immediately deprived of vertical and directional control at that instant. Being at low altitude, there would have been no means of recovering, even if some vertical control could have been achieved. The wreckage was beyond economic repair and the aircraft was written off at that time. However, the investigation did lead to fleet-wide inspection of all fin attachment bolts and some worn/cracked bolts were revealed. An Airworthiness Directive was immediately issued and all the DHC-2 Beavers were grounded until the inspections and bolt replacements had been completed. While the Beaver was built as a rugged bush aircraft, it was subjected to repeated overload operations from rough agricultural airstrips and subjected to high aerodynamic G forces in every day of agricultural operations. Source: Geoff Goodall.

Cause: Technical failure

Occupants & Outcome

Crew On Board

1

Passengers On Board

0

Estimated Survivors

0

Fatality Rate

100.0%

Known people on board: 1

Operational Details

Schedule / Flight

Captains Flat - Captains Flat

Flight Type

Spraying (Agricultural)

Flight Phase

Flight

Crash Site

Plain, Valley

Region / Country

Oceania • Australia

Aircraft Details

Registration

VH-MLB

MSN

1567

Year of Manufacture

1964

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