Loss of control - Schweizer 333, A2-HDB, Gaborone Airport, Botswana, on 22 January 2002

Summary

On 22 Jan 2002, A Schweizer 333 helicopter, registered A2-HDB, crashed at Gaborone Airport in Botswana, killing the pilot, who was an Australian citizen. The Republic of Botswana Department of Civil Aviation (DCA) initiated an investigation into the accident.

The Australian Transport Safety Bureau (ATSB) was notified of the accident in 2005 and appointed an expert under the provisions of clause 5.27 of Annex 13 to the Convention on International Civil Aviation. To protect information supplied by the Botswana DCA to the ATSB and investigative work undertaken to assist the Botswana DCA, the ATSB initiated an investigation under the Transport Safety Investigation Act 2003. A copy of a draft report was sent to the ATSB for review and comment in February 2008. The ATSB provided comments to the Botswana DCA on 20 February 2008.

The Botswana DCA is responsible for releasing a final investigation report regarding this accident. Once completed, a copy of the report can be requested from the Botswana DCA at the following address:

Department of Civil Aviation
PO Box 250
Gaborone
Republic of Botswana

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Released in accordance with section 25 of the Transport Safety Investigation Act 2003.

Occurrence summary

Investigation number AE-2008-011
Occurrence date 22/01/2002
Location Gaborone Airport, Botswana
State International
Report release date 22/12/2008
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Occurrence class Accident
Highest injury level Fatal

Aircraft details

Model 333
Registration A2-HDB
Operation type Private
Departure point Gaborone
Destination Gaborone
Damage Destroyed

Eurpoean Airwings Springbok 41-LK, Levroux, France, on 26 April 2008

Summary

On 21 April 2008 a European Airwings Springbok aircraft suffered a loss of engine power which led to a forced landing being carried out near Levroux, France. There were no injuries to the occupant and the aircraft was slightly damaged. The aircraft was fitted with an Australian manufactured Jabiru aero engine.

The Bureau d'Enquêtes et d'Analyses (BEA) of France is responsible for investigating this occurrence. The BEA requested assistance from the Australian Transport Safety Bureau (ATSB) in establishing a line of communication with the Australian engine manufacturer. The ATSB appointed an accredited representative in accordance with protocols established by the International Civil Aviation Organisation, (ICAO), Annex 13 regarding accident and incident investigation.

Contact was made with Jabiru and copies of correspondence were provided to the BEA. On 24 November 2008 the BEA advised that their investigation had been completed.

Accident reports published by the BEA may be found on the Bureau d'Enquêtes et d'Analyses (BEA) website.

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Released in accordance with section 25 of the Transport Safety Investigation Act 2003.

Occurrence summary

Investigation number AE-2008-041
Occurrence date 26/04/2008
Location Levroux, France
State International
Report release date 12/06/2009
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Occurrence class Accident
Highest injury level None

Aircraft details

Manufacturer European Airwings Springbok
Model Eurpoean Airwings Springbok
Registration 41-LK
Sector Piston
Operation type Sports Aviation
Departure point Levroux, France
Destination Levroux, France
Damage Nil

Aircraft icing and incipient stall - VH-UYI, overhead Gayndah NDB, Queensland, on 5 November 2008

Summary

On 5 November 2008 at about 1838 Eastern Standard Time1, the flight crew of a Saab Aircraft AB 340B, registered VH-UYI, identified an incipient stall while flying a holding pattern in icing conditions. The aircraft's stall warning system did not activate. The pilot in command disconnected the autopilot and recovered the aircraft from the stall. During the recovery manoeuvre, both engines exceeded their maximum continuous operating temperature for an extended period. The manufacturer's Aircraft Operating Manual stated that the Saab 340B stall warning system had an activation level designed for a clean wing only. The manufacturer has issued updated operating procedures for flight in icing conditions, designed to prevent ice build-up on the airframe.

Occurrence summary

Investigation number AO-2009-003
Occurrence date 05/11/2008
Location Overhead Gayndah NDB
State Queensland
Report release date 29/06/2010
Report status Final
Investigation level Short
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Icing
Occurrence class Serious Incident
Highest injury level None

Aircraft details

Manufacturer Saab Aircraft Co.
Model 340
Registration VH-UYI
Serial number 340B-283
Sector Turboprop
Operation type Air Transport Low Capacity
Departure point Moranbah, Qld
Destination Brisbane, Qld
Damage Minor

Unstable approach of a Bombardier DHC8, VH-TQL, Sydney Aerodrome, New South Wales, on 26 December 2008

Summary

On 26 December 2008, a Bombardier Inc DHC-8-315 (DHC8), registered VH-TQL, was conducting a regular public transport flight from Moree to Sydney Aerodrome, New South Wales. While on final approach, and after capturing the glideslope for the runway 34 Left (34L) instrument landing system approach, the autopilot commanded the aircraft to descend. This prompted the crew to make a number of configuration changes in an effort to continue the approach. Those changes destabilised the aircraft and diminished its performance, which lead to the activation of the aircraft's stickshaker. Shortly after, a missed approach was commenced by the flight crew.

In this occurrence, the crew continued the approach despite becoming aware of the unstable aircraft state. Positive action to avoid a stickshaker event could have been taken if the crew communicated to each other the inappropriate aircraft configuration as it progressed along the approach.

As a result of this occurrence, the operator has proactively implemented changes to its DHC-8 training syllabus, highlighted to its crews the destabilising effects of changes to an aircraft's configuration during an approach and emphasised to crews the importance of good communication in a multi-crew environment.

Occurrence summary

Investigation number AO-2009-001
Occurrence date 26/12/2008
Location Sydney Aerodrome
State New South Wales
Report release date 08/06/2010
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Unstable approach
Occurrence class Serious Incident
Highest injury level None

Aircraft details

Manufacturer Bombardier Inc
Model DHC-8
Registration VH-TQL
Serial number 603
Sector Turboprop
Operation type Air Transport High Capacity
Departure point Moree, NSW
Destination Sydney, NSW
Damage Nil

Wirestrike, 25 km west-north-west of Leongatha Aerodrome, Victoria, on 25 December 2008, VH-ROO, Cessna 172M

Summary

On 25 December 2008, at about 0845 Eastern Daylight-saving Time, a Cessna Aircraft Company 172M aircraft, registered VH-ROO, struck a powerline that was located on a property at Kernot, 25 km north-west of Leongatha Aerodrome, Vic.

The aircraft impacted the ground about 100 m from the powerline and caught fire. The pilot, who was the sole occupant, was fatally injured.

Examination of the wreckage did not identify any mechanical defects that would have affected the safe operation of the aircraft.

Occurrence summary

Investigation number AO-2008-082
Occurrence date 25/12/2008
Location 25 km WNW of Leongatha
State Victoria
Report release date 07/05/2009
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Wirestrike
Occurrence class Accident
Highest injury level Fatal

Aircraft details

Manufacturer Cessna Aircraft Company
Model 172
Registration VH-ROO
Serial number 17266828
Sector Piston
Operation type Private
Departure point Woodleigh, Victoria
Destination Woodleigh, Victoria
Damage Destroyed

In-flight breakup - PZL M18A Dromader, VH-IGT, 58 km south-west of Nyngan, New South Wales, on 29 December 2008

Preliminary report

At about 1145 Eastern Daylight-saving Time, the pilot of a PZL-M18A Dromader aircraft, registered VH-IGT, took off from a road on a property 58 km south-west of Nyngan, NSW. About 10 minutes later, the outboard section of the right wing separated from the aircraft and the aircraft impacted the ground. The pilot, who was the sole occupant, was fatally injured.

Summary

On 29 December 2008, at about 1145 Eastern Daylight-saving Time, a PZL-M18A Dromader (TPE331) aircraft, registered VH-IGT, took off from a road on a property 58 km south-west of Nyngan, New South Wales to conduct agricultural spraying operations. About 10 minutes later, the aircraft was seen flying back towards the road when a witness saw something fall off the aircraft and reported that the aircraft then rolled and impacted the ground. The pilot, who was the sole occupant, was fatally injured.

The investigation found that the outboard 1.8 m of the right wing separated from the aircraft resulting in a loss of control and subsequent impact with the terrain. The separation of the right-wing section could not be conclusively attributed to any particular factor.

During the course of the investigation, it was determined that a number of operators of the aircraft type were not applying the appropriate service life factors to determine the effective hours flown when their aircraft were operated at take-off weights above 4,700 kg. The effect was to overestimate the remaining service life of those aircraft.

It was also found that operators had an interpretation of the Civil Aviation Safety Authority (CASA) exemptions that, by their understanding, permitted operation at weights in excess of the maximum take-off weight and allowed them to operate at higher take-off weights without the need to account for the additional limitation imposed by the manufacturer for operation at those weights.

As a result of the accident, the following safety action has been taken or proposed:

  • The operator undertook a retrospective process of applying the service life factors to its aircraft fleet during operations that had involved take-off weights above 4,700 kg and will apply them to all relevant future flights.
  • CASA advised that they had contacted Certificate of Registration holders of M18 Dromader aircraft to verify that they had a procedure for recording and factoring aircraft hours that included overweight operations. Further verification would also occur as part of CASA's routine surveillance program. CASA also advised that they will provide education to operators on the intention of the exemptions and will be revising the exemptions to ensure that the intended interpretation is clear.

Occurrence summary

Investigation number AO-2008-084
Occurrence date 29/12/2008
Location 58 km SW of Nyngan
State New South Wales
Report release date 20/12/2011
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category In-flight break-up
Occurrence class Accident
Highest injury level Fatal

Aircraft details

Manufacturer PZL Warszawa-Okecie
Model M-18
Registration VH-IGT
Serial number 1Z016-27
Sector Turboprop
Operation type Aerial Work
Departure point Folkstone, NSW
Destination Folkstone, NSW
Damage Destroyed

Midair collision involving Cessna Aircraft 152, VH-FMG and Liberty Aerospace XL-2, VH-XLY, Casula, New South Wales, on 18 December 2008

Preliminary report

Preliminary Report Relaesed 24 February 2009

On 18 December 2008, a Cessna 152 aircraft and a Liberty XL2 aircraft collided in midair over Casula, NSW, in the proximity of the 2RN reporting point, south-west of Bankstown Airport. The Liberty remained flyable and landed at Bankstown approximately 6 minutes later, while the Cessna descended to the ground and was destroyed. Both occupants of the Cessna were fatally injured.

Final report

Abstract

On 18 December 2008, a Liberty XL-2 aircraft, registered VH-XLY, collided in midair with a Cessna 152 aircraft, registered VH-FMG, near Casula, New South Wales (NSW). The Liberty was engaged in a pilot licence flight test; the Cessna was engaged in pilot training. The pilots of both aircraft were operating in uncontrolled airspace under the visual flight rules, in good weather. The collision severely damaged the Cessna, which descended in an uncontrolled manner before impacting terrain, fatally injuring the two occupants. The Liberty was able to continue flying and landed at Bankstown Airport, NSW.

The two pilots in the Liberty had previously sighted the Cessna while they were tracking towards an inbound reporting point. They subsequently lost sight of the aircraft prior to the collision. The investigation found that the limitations imposed by the visual size of the Cessna and its lack of relative motion in relation to the Liberty, the focussed workload of the student under test at the time, and obstructions posed by the aircraft's structure were likely factors in them being unable to re-sight the Cessna before the collision.

The investigation did not identify any organisational or systemic issues that might adversely affect the future safety of aviation operations. However, the factors involved are a salient reminder to all pilots that there are limitations with visual flight procedures and that, regardless of pilot's experience, they need to remain vigilant at all times. That is particularly the case when in the vicinity of other aircraft.

As a result of a number of midair collisions in Australia, the Civil Aviation Safety Authority (CASA) conducted two reviews into operations at General Aviation Aerodrome Procedure (GAAP) aerodromes. Although this accident occurred in Class G airspace (uncontrolled airspace), due to its proximity to an inbound GAAP reporting point, CASA referred to it in those reviews. Those reviews made a number of recommendations to enhance the provision of GAAP procedures education and training and on the current implementation of GAAP. On 3 June 2010, CASA introduced full Class D airspace at all aerodromes that previously operated under GAAP in Australia.

Response to Coroner’s findings

The ATSB notes that on 2 May 2013 the Deputy State Coroner, Magistrate P. A. McMahon, handed down his findings in the inquest into the deaths of the two occupants of a Cessna 152 aircraft, registered VH-FMG, following a midair collision with a Liberty XL2 aircraft, registered VH-XLY.

The Coroner’s findings were substantially in accordance with those of the ATSB. The Coroner did not make any recommendations arising out of his findings.

The factors identified in the report and the Coroner’s findings highlight the limitations with visual flight procedures and the need for vigilance at all times, particularly in the vicinity of other aircraft and in potentially high traffic areas.

Cooperation with Coroners

Australian Transport Safety Bureau (ATSB) investigations are conducted with the objective of providing findings that can be used to improve transport safety in the future. Coronial Inquests are a separate process to the ATSB investigation and they are usually supported by their own investigation and brief of evidence. However, as Inquests also have the objective of seeking to prevent a death occurring again, the ATSB provides cooperation through the explanation of the ATSB's findings in its report. 

The ATSB appreciates the interest of Coroners in working with the ATSB in the interests of improving safety. The Coroner formulated his findings and recommendations independently of the ATSB. However, the ATSB supports the coronial process and in the interests of ensuring that safety information is made available to the broadest audience the ATSB is making this publication.

Occurrence summary

Investigation number AO-2008-081
Occurrence date 18/12/2008
Location 10 Km W of Bankstown Airport
State New South Wales
Report release date 12/07/2011
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Airborne collision
Occurrence class Accident
Highest injury level Fatal

Aircraft details

Manufacturer Cessna Aircraft Company
Model 152
Registration VH-FMG
Serial number 15283511
Sector Piston
Operation type Flying Training
Departure point Bankstown, NSW
Destination Bankstown, NSW
Damage Destroyed

Aircraft details

Manufacturer Liberty Aerospace Incorporated
Model XL-2
Registration VH-XLY
Serial number 112
Sector Piston
Operation type Flying Training
Departure point Bankstown, NSW
Destination Bankstown, NSW
Damage Minor

Operational event - Darwin Aerodrome, Northern Territory, 17 December 2008, PK-GZJ, Boeing 737-4MO

Summary

On 17 December 2008, a Boeing Company 737-4MO aircraft, registered PK-GZJ, made a significant diversion around weather at night while en route to Darwin, Northern Territory from Denpasar, Indonesia. The aircraft was cleared to conduct the runway 11 very high frequency omnidirectional radio range (VOR) approach via the initial approach fix NASUX. After the weather diversion, it was more convenient for the flight crew to make a pilot intercept of the 285 radial from the VOR but there was a period of misunderstanding as a result of a breakdown in the application of standard radiotelephony readbacks.

The flight crew left the previously-cleared altitude of 3,000 ft on descent although they had not been cleared to do so. When this became apparent, no updated clearance for a pilot intercept of the 285 radial was issued by the controller. The aircraft continued to descend on the basis of the runway 11 VOR descent profile, even though it was not conducting the runway 11 VOR approach.

The flight crew used the position calculated by the aircraft's inertial reference system (IRS) to intercept the 285 radial, instead of using the signal from the VOR. The IRS position was not accurate enough for this, and the aircraft tracked to outside of the stipulated 5 degrees tolerance either side of the 285 radial. From then on, the aircraft was no longer 'established' on the 285 radial even though it was below the minimum sector altitude in cloud. When it broke through the cloud, the aircraft was clearly not aligned with the runway and a missed approach was carried out.

The investigation did not identify any organisational or systemic issues that might adversely affect the future safety of aviation operations. However, in response to the occurrence, the aircraft operator developed a corrective action plan that addressed a number of crew resource management and non-precision approach training aspects to the event.

Occurrence summary

Investigation number AO-2008-080
Occurrence date 17/12/2008
Location Darwin Aerodrome
State Northern Territory
Report release date 03/03/2011
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Operational non-compliance
Occurrence class Incident
Highest injury level None

Aircraft details

Manufacturer The Boeing Company
Model 737
Registration PK-GZJ
Serial number 29205
Sector Jet
Operation type Air Transport High Capacity
Departure point Bali, Indonesia
Destination Darwin, NT
Damage Nil

Wake turbulence event, Sydney Airport, New South Wales, on 3 November 2008

Summary

On 3 November 2008, a SAAB Aircraft Company 340B-229 (SAAB), registered VH-ORX, was conducting a regular public transport flight from Orange, NSW to Sydney. The crew reported that, at about 0724 Eastern Daylight-saving Time, when tracking to join a 7 NM (13 km) final for runway 34 Right (34R), a passenger sustained minor injuries following a possible wake turbulence event that resulted in a momentary loss of control of the aircraft.

Examination of the available radar, meteorological and aircraft operational data identified that the momentary upset probably resulted from wake turbulence, which was generated by an Airbus Industrie A380-800 (A380) that was conducting a parallel approach to runway 34 Left (34L). There was a 35 kt left crosswind affecting both aircraft's approaches.

Airservices Australia (Airservices) reported to the SAAB operator that, as a result of this incident, they had introduced a number of interim minor changes to Sydney parallel runway operational procedures during high crosswind conditions. Those minor changes would have effect while Airservices carried out a review of A380 operations. In addition, the Civil Aviation Safety Authority has opened a regulatory change project to review and update wake turbulence separation information in the Manual of Standards Part 172.

Occurrence summary

Investigation number AO-2008-077
Occurrence date 03/11/2008
Location Sydney Aerodrome 160deg M 13KM
State New South Wales
Report release date 09/12/2009
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Loss of control
Occurrence class Serious Incident
Highest injury level Minor

Aircraft details

Manufacturer Saab Aircraft Co.
Model 340
Registration VH-ORX
Serial number 340B-293
Sector Turboprop
Operation type Air Transport Low Capacity
Departure point Orange, NSW
Destination Sydney, NSW
Damage Nil

Collision with terrain, 3 km north of Bathurst Airport, New South Wales, on 7 November 2008, VH-OPC, Piper PA-31-350 Chieftain

Preliminary report

Preliminary report released 19 January 2009

At about 2026 Eastern Daylight-saving Time on 7 November 2008, a Piper Aircraft Corp PA-31-350 Chieftain, registered VH-OPC, collided with terrain. The aircraft was seriously damaged, and the four occupants were fatally injured.

Summary

On 7 November 2008, a Piper Aircraft Corp. PA-31-350 Chieftain, registered VH-OPC, was being operated on a private flight under the instrument flight rules from Moorabbin Airport, Vic. to Port Macquarie via Bathurst, NSW. On board the aircraft were the owner-pilot and three passengers.

The flight from Moorabbin to Bathurst was conducted in accordance with the pilot's flight plan and a review of recorded air traffic control data and communications did not reveal any problems during that flight. After refuelling at Bathurst Airport, the pilot departed from runway 35 for Port Macquarie in dark-night conditions with light rain in the area. At about 2024, some 2½ minutes after reporting airborne, residents of Forest Grove to the north of Bathurst Airport, heard a sudden loud noise from an aircraft at low altitude. Shortly after, there was the sound of an explosion and the glow of a fire. The aircraft was found to have impacted terrain resulting in serious damage to the aircraft. The four occupants were fatally injured.

The aircraft had impacted the ground upright, slightly right wing low, at a descent angle greater than 20°. The wreckage trail, oriented on a ground track of 165° M, extended for about 300 m. Almost all of the major aircraft parts were seriously impact and fire damaged. The propellers indicated high rotational energy. The landing gear and wing flaps were retracted.

Due to fire and impact damage, and limited information about the sequence of events after take-off, the evidence available to the investigation was limited. There were no indicators of aircraft malfunction or pilot impairment prior to the accident. After extensive examination, the investigation found there was no evidence of any aircraft unserviceability, and that airworthiness was not likely to have been a contributing factor in the accident. The investigation was unable to establish why the aircraft collided with terrain; however, pilot spatial disorientation or pilot incapacitation could not be discounted.

Occurrence summary

Investigation number AO-2008-076
Occurrence date 07/11/2008
Location 3 km N Bathurst Airport
State New South Wales
Report release date 22/01/2010
Report status Final
Investigation level Systemic
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Collision with terrain
Occurrence class Accident
Highest injury level Fatal

Aircraft details

Manufacturer Piper Aircraft Corp
Model PA-31
Registration VH-OPC
Serial number 31-7952082
Sector Piston
Operation type Private
Departure point Bathurst, NSW
Destination Port Macquarie, NSW
Damage Destroyed