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What happened

On the afternoon of 10 October 2014, the pilot of an amateur-built One Design DR-107 aircraft, registered VH-EGT, was performing low-level aerobatic manoeuvres. The manoeuvres were being performed to the east of Goolwa Airport, South Australia.

Witnesses described the aircraft performing a series of similar manoeuvres. Each involved a vertical climb and tumbling manoeuvre followed by a vertical dive and a low altitude recovery.

Witnesses reported that, during recovery from the last vertical dive, the aircraft collided with terrain. The aircraft was destroyed by the impact and the pilot was fatally injured.

What the ATSB found

The ATSB found no evidence of pilot incapacitation or a mechanical fault with the aircraft that could have contributed to the accident. There was insufficient evidence to determine why the recovery was not accomplished above the pilot’s minimum authorised aerobatics height.

The Civil Aviation Safety Authority (CASA) recommends that pilots performing low-level aerobatics undertake regular peer reviews due to the high level of skill and fine safety margins involved. The ATSB found no evidence of the pilot undertaking a peer review of their aerobatic performance in the 15 months prior to the accident.

Finally, the ATSB identified a safety issue that CASA does not require builders of amateur-built experimental aircraft to produce a flight manual, or equivalent, for their aircraft following flight testing. Without a flight manual, the builder, subsequent owners and other pilots do not have reference to the operational and performance data necessary to safely operate the aircraft.

What’s been done as a result

In response to the identified safety issue, the ATSB has issued a safety recommendation to CASA to take action to require builders of amateur-built experimental aircraft to produce a flight manual, or equivalent, for their aircraft following flight testing.

Safety message

This accident highlights the risks inherent in performing low-level aerobatics. Applying the recommendations in CASA civil aviation advisory publication CAAP 155-1(0) Aerobatics will reduce these risks. Specifically, pilots are encouraged to always maintain minimum approved heights above the ground when performing aerobatics and to engage in regular peer reviews.

Owners of amateur built experimental aircraft are also encouraged to ensure a comprehensive and accurate flight manual, or equivalent, is available for reference by themselves, subsequent owners and other pilots who may fly the aircraft.

Amateur-built One Design DR-107 aircraft, registered VH-EGT

Amateur-built One Design DR-107 aircraft, registered VH-EGT
Source: FlightAware

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The occurrence

Context

Safety analysis

Findings

Safety issues and actions

Sources and submissions

 

Safety issue

AO-2014-163-SI-01 -  

Flight manual requirements for amateur-built experimental aircraft

The Civil Aviation Safety Authority did not require builders of amateur‑built experimental aircraft to produce a flight manual, or equivalent, for their aircraft following flight testing. Without a flight manual the builder, other pilots and subsequent owners do not have reference to operational and performance data necessary to safely operate the aircraft.

Safety issue details
Issue number:AO-2014-163-SI-01
Who it affects:Operators of amateur-built experimental aircraft
Status:Safety action pending

 
General details
Date: 10 Oct 2014 Investigation status: Completed 
Time: 1430 CDT Investigation type: Occurrence Investigation 
Location   (show map):Near Goolwa Airport Occurrence type:Collision with terrain 
State: South Australia Occurrence class: Infrastructure 
Release date: 14 Apr 2016 Occurrence category: Accident 
Report status: Final Highest injury level: Fatal 
 
Aircraft details
Aircraft manufacturer: Amateur Built Aircraft 
Aircraft model: One Design DR-107  
Aircraft registration: VH-EGT 
Type of operation: Private 
Sector: Piston 
Damage to aircraft: Destroyed 
Departure point:Goolwa Airport, South Australia
 
 
 
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Last update 14 June 2016