Interim report released for fatal air tanker crash in Australia

All three crewmembers were killed in New South Wales, January 23, 2020

Flight path B134 air tanker crash

The Australian Transport Safety Bureau (ATSB) has released an interim report about the January 23, 2020 crash of a C-130, Air Tanker 134, that killed the three crewmembers on board. This follows the preliminary report the agency issued in February, 2020. The aircraft was known as Bomber 134 (B134) in Australia.

“The interim report does not contain findings nor identify safety issues, which will be contained in the final report. However, it does detail the extensive evidence gathered to date, which has helped ATSB investigators develop a detailed picture of this tragic accident’s sequence of events,” said ATSB Chief Commissioner Greg Hood.

Tanker 134 at Medford, Oregon
Tanker 134 (B134) at Medford, Oregon July 27, 2019. Photo by Tim Crippin.

It was very windy on January 23, with a forecast for the possibility of mountain waves. Before the incident a birddog, similar to a lead plane, and  Bomber 137 (B137), formerly Tanker 138, a Boeing 737 that Coulson sold to New South Wales, was tasked to drop on a fire in the Adaminaby area. Based on the weather the birddog pilot declined the assignment. After B137 made a drop on the fire, the crew reported having experienced uncommanded aircraft rolls up to 45° angle of bank (due to wind) and a windshear warning from the aircraft on‑board systems.

After completing the drop, the B137 crew sent a text message to the birddog pilot indicating that the conditions were “horrible down there. Don’t send anybody and we’re not going back.” They also reported to the Cooma FCC that the conditions were unsuitable for firebombing operations. During B137’s return flight to Richmond, the Richmond air base manager requested that they reload the aircraft in Canberra and return to Adaminaby. The Pilot in Command (PIC) replied that they would not be returning to Adaminaby due to the weather conditions.

B134 was dispatched to the fire at Adaminaby. While they were in route, the PIC of B137 called to inform them of the actual conditions, and that B137 would not be returning to Adaminaby.

After arriving at Adaminaby the PIC of B134 contacted the air operations officer at the Cooma FCC by radio and advised them that it was too smoky and windy to complete a retardant drop at that location. The Cooma air operations officer then provided the crew with the location of the Good Good Fire, about 58 km to the east of Adaminaby, with the objective of conducting structure and property protection near Peak View. Again, there was no birddog operating with the air tanker.

B134 flight path air tanker crash
Flight path overview (in white), including the times and locations of where the crew of B134 was in communication with others. From the report.

Analysis of a witness video confirmed that the aircraft initially established a positive rate of climb and was banking to the left following the retardant drop, the report details. Continue reading “Interim report released for fatal air tanker crash in Australia”

A Q400 air tanker will be based in Australia this summer

Air Tanker 141, C-FFQEQ, Q400
T-141 (C-FFQEQ) Q400AT. At Bundaberg, Queensland, Australia. Photo Credit Brendon Sutton

A De Havilland Canada Dash 8 Q400AT is on contract in Queensland, Australia during the 2020/2021 summer bushfire season. This is the first time the state has had regular access to a large air tanker, rather than borrowing from New South Wales or Victoria. Provided by Conair, Tanker 141 (C-FFQE) arrived in Bundaberg in August after departing from Abbotsford British Columbia and making fuel stops at Oakland, Honolulu, Majuro (Marshall Islands), Honiara (Solomon Islands), and Brisbane where it cleared customs. There is a possibility the contract which started September 1 could be extended for an additional four years during the bushfire seasons.

Air Tanker 141, C-FFQEQ, Q400 refuel Marshall Islands
Air Tanker 141, (C-FFQEQ) Q400AT – Landing in Marshall Islands en route to Queensland – Photo Credit Brendon Sutton.

Conair, working with the Australian company Field Air, will have two other large air tankers on contract in Australia, both RJ 85s, beginning October 1 in New South Wales and early December in Victoria.

In 2017 the Conair Group secured a deal to sell six Q400 Multi-Role aircraft converted to air tankers to France’s Securite Civile (Department of Civil Defence and Emergency Preparedness), two of which have been delivered. These are new aircraft that Conair purchased from Bombardier which can be converted in a few hours to carry passengers.

Besides the six that will be going to France, Conair has two Q400s, including the one in Australia. The company is working with North American agencies to hopefully see at least two of the  Q400AT’s begin contracts next year. The aircraft were previously owned and are not the Multi-Role models.

Jeff Berry, Manager of Business Development at Conair, said the aircraft, “[A]re pure air tanker STC [supplemental type certificate], so we don’t have any of the residual plumbing, wiring, attachment points inside, or heavy duty flooring that you need for an MR, so it’s stripped down to be a pure tanker. And it gives us the maximum fuel load and the maximum retardant tank capacity. You get the full 10,000 liters [2,642 gallons]. The Q400AT is truly a ‘Green’ airtanker — it is incredibly fuel efficient burning only 58 percent of the fuel per hour while carrying 85 percent of the load of a typical type 1 airtanker.”

“It can operate off a 5,000-foot runway,” Mr. Berry said. “It gives them a lot of flexibility to utilize more of the existing tanker base infrastructure that is in place that may or may not be available for some of the large or very large air tankers.”

Air Tanker 141, C-FFQEQ, Q400
T-141 (C-FFQEQ) Q400AT – Refueling at Majuro, Marshall Islands. Photo Credit Brendon Sutton.

Queensland had an extraordinarily busy 2018/2019 bushfire season. Wildfire Today covered some of the fires that year.

map wildfires in Queensland, Australia
Satellite photo showing smoke from wildfires in Queensland, Australia November 29, 2018. NASA
Map Bundaberg, Queensland
Map showing location of Bundaberg, Queensland, Australia
Air Tanker 141, C-FFQEQ, Q400
T-141 (C-FFQEQ) Q400AT – Photo Credit Jeff Bough.

Erickson enacts pay cuts and furloughs for some employees

Their Air-Cranes have been shipped from Australia to Greece for the northern hemisphere wildfire season

Erickson loads Air-Crane helicopters Australia Greece
Erickson loads Air-Crane helicopters to be shipped from Australia to Greece. Erickson photo, April, 2020. Erickson photo.

Erickson Incorporated, operator of large firefighting helicopters, is cutting the pay and requiring furloughs for some of their employees. The Digital Marketing Manager for the company, Christina Kalman, describes it as temporary:

Consistent with peers in our industry, Erickson is taking precautionary measures on a short-term and temporary basis to protect against additional future impacts and the unexpected costs caused by the global pandemic. As part of this effort, a portion of our employees, including the CEO and all members of the management team, will participate in a temporary pay reduction or short-term furlough program in May and June.

Erickson manufactures, owns, and operates large Type 1 Air-Crane helicopters that are used around the world for firefighting and construction. In April after the bushfire season ended in Australia they loaded approximately half a dozen of them onto a ship for a weeks-long voyage to Greece for the northern hemisphere fire season, arriving May 4. The company now has six Air-Cranes in Greece, Ms. Kalman said.

Erickson loads Air-Crane helicopters Australia Greece map
The map shows the location of the Sider Jasmine carrying Air-Crane helicopters on April 20, 2020, at about the halfway point on its voyage from Australia to Greece. Erickson image.

A person might assume that companies involved in aerial firefighting with multi-year contracts could weather the effects of the COVID-19 pandemic fairly well, however they could have increases in operating costs related to managing their personnel and equipment. Their employees might also be quarantined or stricken by the disease, creating staffing challenges. Erickson is involved in much more than firefighting and works extensively for the military. They also sell helicopters, recently delivering two Air-Cranes to the Korea Forest Service.

One issue that could be causing stress for operators of large helicopters is, as we wrote April 22, the four-year U.S. Forest Service exclusive use (EU) contracts for Type 1 firefighting helicopters issued in 2016 expired April 30, 2020. Since new contracts based on the solicitation issued November 15, 2019 have not yet been awarded, the USFS has given 30-day contracts to a handful of vendors. The agency has refused to provide to us any details about the 30-day contracts, but Fire Aviation has learned that approximately five to seven helicopters are presently working on 30-day deals.

Since many of the USFS procurement actions for firefighting aircraft are protested, which delays activation for several months, these 90-day contracts for up to 30 helicopters may be a safety net in case of a protest, in addition to filling the void while there are no long term contracts. If a company receives one of the Type 1 EU contracts, the Forest Service’s solicitation states, they “will then remove your awarded helicopter from consideration for this one-time [90-day] opportunity.”

With the shadow of the pandemic affecting everyday life this is a bad time for the USFS’s dysfunctional aircraft contracting operation to again be too slow in processing a contract that should have been awarded no later than November, 2019 in order to allow time for the typical protests and still be functional from March through November.

Several years ago Erickson grew to the point that they were no longer qualified to bid on USFS helicopter contracts that were limited to “small businesses”. But after their chapter 11 reorganization in 2017, Erickson emerged with new owners and a new ownership structure and the Small Business Administration restored their “small business” status. Ms. Kalman said Erickson submitted a proposal for the latest Type 1 EU contract and is hopeful for an award.

Erickson loads Air-Crane helicopters Australia Greece
Erickson loads Air-Crane helicopters to be shipped from Australia to Greece. Erickson photo, April, 2020. Erickson photo.
Erickson loads Air-Crane helicopters Australia Greece
Erickson loads Air-Crane helicopters to be shipped from Australia to Greece. Erickson photo, April, 2020. Erickson photo.

Report released for crash of Air-Crane helicopter into lake

The accident occurred in Australia in January, 2019

Air-crane helicopter crash Australia report
From the ATSB report.

The Australian Transport Safety Bureau determined that the Air-Crane helicopter that crashed into a lake January 28, 2019 in Victoria, Australia was a victim of vortex ring state (VRS). The accident occurred on a firefighting mission as it descended to draft water at a narrow lake with steep sides.

From the report released April 17, 2020:

The topography, high rate of powered descent, and steep flare that reduced the airspeed, created conditions conducive to the onset of VRS. The crew reported that the rapidity of onset and dimensions of the dip site did not provide enough time or space to maneuver sideways to effect a recovery.

Air-Crane crash Australia helicopter
The Air-Crane crashed in a lake surrounded by rising terrain.

Here is what I wrote about the accident on January 28, 2019 in a comment below the report of the accident:

If the helicopter was attempting to hover to draft water to refill its tanks, the fairly narrow section of the lake with what appears to be steep rising terrain nearby may have been a factor in the confined space. The Air-Crane has six blades on the main rotor with a diameter of 72 feet. It may have encountered what helicopter pilots refer to as a “Vortex Ring State” or VRS. The canyon slopes may have prevented the massive rotor wash from diffusing and could have caused the cushion of air beneath it to become chaotic as the helicopter neared the water surface, reducing lift.

VRS in addition to density altitude was a factor in the crash of the MH-X Silent Hawk that transported Seal Team 6 as they attacked the hideout of Osama bin Laden in Pakistan in 2011. The helicopter was landing inside a yard surrounded by high walls when it lost lift. The pilots had practiced landing in a full-scale model of the site, but the walls in the model were represented by chain link fencing material, and were not solid like the walls around Osama bin Laden’s house. The rotor wash would have been more easily diffused through the chain link fence during the rehearsals.

Air-Crane 341
Air-Crane 341. From the report.

Two crewmembers were not injured, but one sustained a knee injury. In May, 2019 the helicopter was recovered after a complex salvage process.

Air-Crane extracted from lake crash

Below are excerpts from the ATSB report about the Air-Crane incident (which you can view here):


…After a number of water drops, the aerial attack supervisor (AAS) re-tasked the crew to fight a flame front further north, which was east-northeast from the dip site. Each drop was also incrementally further north. This resulted in the crew gradually tightening the approach to the dip site.

During the occurrence approach, the tighter approach resulted in a greater than normal flare to arrest the aircraft at the aiming point in the dip site. The higher nose pitch up prompted the SIC to advise the PIC to move forward of the trees before descending any further to ensure tail rotor clearance. Clear of the trees, the flare was increased.

While descending with a nose-high attitude, the aircraft struck the water tail-first, submerging and removing the tail rotor, causing rapid rotation to the right through one and half turns. While rotating, the main rotor blades separated as they contacted water. The right cockpit door separated from the fuselage, and the aircraft came to rest on its left side, submerging the cockpit.

Each crewmember recalled the rehearsed drills from their helicopter underwater escape training (HUET). They identified their seat belt and nearest exit to orientate themselves in the aircraft. They all waited until the last moment to draw a breath, and did not unbuckle and exit the helicopter until motion had ceased. The crew reported that it was not possible to see anything underwater, and that jet fuel contamination was present.

The SIC in the right seat exited through his doorway, from which the door was already missing. The PIC could not open his door so he swam across the cabin (up) and was assisted by the SIC to exit through the right hand door. As the rear door was jammed, the crew chief in the aft seat pushed out a window from the rear of the cabin, and exited through it.

Neither pilot unplugged their helmet. However, the extension cords from the aircraft to the helmet plug allowed the plug to release, preventing the helmets from snaring the pilots. All three crew escaped, and inflated their life jackets. Two crew were uninjured, and one crewmember sustained a knee injury.

At the time of the accident, crews aboard S-76 and S-61N helicopters were assessing the potential of the dip site for later use in night operations. An AAS aboard the S-76 relayed details of the accident to an incident controller who enacted the emergency response plan. Neither the S-76 nor the S-61N was equipped or able to provide direct assistance, other than monitoring, and relaying information. Following exit from the helicopter, the only form of communication available to the Skycrane crew was hand signals. They gave thumbs-up indications to the crew of the overhead S-61N to advise that they were okay. The Skycrane crew then swam to shore and trekked through dense bush to a road where they were met by rescuers.

Findings
These findings should not be read as apportioning blame or liability to any particular organization or individual.

  • The crew conducted a tight descending right hand turn into the dam [lake], inside the upper margins of the flight envelope. This approach required a steep flare on arrival and likely resulted in the rapid onset of vortex ring state.
  • The dam’s [lake’s] steep sides and narrow tapered body provided limited opportunity for vortex ring state recovery actions, contributing to collision with water.
  • The Crew Chief’s presence aboard the aircraft during firebombing operations exposed him to unnecessary risk.
  • All crewmembers credited their survival to skills learned and practiced in Helicopter Underwater Escape Training. In addition, the helmet cord extension cables detached easily from the aircraft, contributing directly to the crew’s egress from the flooded cockpit.

Bloomberg article about Australian fire aviation

Bloomberg graphic fires wildfires air tankers Australia
Bloomberg graphic, showing the flight paths of various firefighting and mapping aircraft in Australia.

When a reporter for Bloomberg asked me if she could interview me I said OK, as long as I could have the rights to publish the article on my web site — Mira Rojanasakul said yes. I thought the article, written with Hayley Warren, was going to be primarily about air tankers, and those used in Australia in particular, but now that it has been published today I see that it also covers how climate change is affecting wildfires down under and in the United States.

In addition to being a writer, Ms. Rojanasakul is an accomplished graphics editor for Bloomberg. And that’s why I’m writing about this article and why you should check it out. She takes graphics to a higher level.

Here are some samples.

Bloomberg graphic fires wildfires air tankers Australia
Bloomberg graphic showing the flight paths of North America based air tankers that travelled to Australia for their 2019-2020 wildfire season.
Bloomberg graphic fires wildfires air tankers Australia
The occurrence of wildfires in Washington, Oregon, and California showing how some of them occurred during the summer bushfire season in Australia. If aviation resources are going to be shared between North America and Australia, this information comes into play. Bloomberg graphic.
Bloomberg graphic fires wildfires air tankers Australia
Bloomberg graphic
Bloomberg graphic fires wildfires air tankers Australia
Bloomberg graphic

Here is an animated .gif of one of the graphics. The description from the Bloomberg site, “Between July 2019 and February 2020, nearly 40,000 flights by firefighting aircraft were taken over southeast Australia.” A much better and larger animated version is on the Bloomberg website.

Report released on crash of firefighting helicopter in Queensland

The Bell 214B crashed while on a water-dropping mission Nov. 13, 2019

B214 helicopter crash Queensland November 13 2019
Bell 214, Queensland, Australia, November 13, 2020. Photo by operator.

The Australian Transport Safety Bureau has released an Occurrence Brief regarding the Bell 214B that crashed while it was on a water dropping mission near Pechey, Queensland, Australia November 13, 2019.

The pilot suffered minor injuries and was flown to a hospital by another helicopter.

Below is the complete text of the Brief. (We added the photo taken by 9News):


Occurrence Briefs are concise reports that detail the facts surrounding a transport safety occurrence, as received in the initial notification and any follow-up enquiries. They provide an opportunity to share safety messages in the absence of an investigation.

What happened
On 13 November 2019, a Bell 214B helicopter was water bombing during fire control operations near Pechey, Queensland. At 1344 Eastern Standard Time, the helicopter approached the bushfire downwind and down hill from the north-west at about 60 knots, and made a descending right-hand turn back into wind over the fire.

The descent was continued towards the drop zone. The airspeed was further slowed and the height was reduced to about 150 feet above ground level (50 feet above treetop level). The pilot then released the load of water before departing the drop area into rising terrain. The pilot heard the low rotor RPM warning and had insufficient altitude and clearance from obstacles to recover the rotor RPM and continue flying. He was concerned that further actions required to recover the rotor RPM would result in the helicopter possibly striking trees or ending up in the actively burning fire.

Helicopter Down crash Queensland Australia
Bell 412B crashed while working on a fire near Pechey, Queensland, Australia November 13, 2019. Photo by 9News

In maintaining the climb to avoid rising ground, trees and fire, the rotor RPM appeared to decay further. As the helicopter cleared the trees, it began to descend, yawed to the right and the left-hand skid collided with the ground. The helicopter rolled onto its left side resulting in substantial damage. The pilot was able to turn off the fuel to stop the engine and exited the helicopter via the overhead window with minor injuries. Neither the g-force activated ELT beacon or flight tracking alarm were triggered.

The distance from the last water drop to the impact point was less than 100 metres and the recovered aircraft showed little evidence of damage from forward moment.

B214 helicopter crash Queensland November 13 2019
Bell 214, Queensland, Australia, November 13, 2020. Photo by operator.

Operator’s investigation and comments
Based on the pilot’s account of the accident and assessment of the recovered aircraft, mechanical malfunctions were ruled out as a contributing factor. The operator determined that the accident was most likely the result of a loss of rotor RPM that the pilot was unable to recover, due to a downwind descending turn, low altitude for the water drop, and a departure into rising terrain. The pilot had to make a decision between putting the helicopter into tall trees and active bushfire or climbing over the trees to clear ground. In choosing the latter, the rotor RPM decayed further and the helicopter contacted the ground.

The operator stated that the helicopter type is renowned for its ‘hot and high’ performance making it a very effective firefighting platform. Firefighting combines a number of factors which result in flying that is close to the performance limits of the aircraft – high gross weights, low airspeeds, low altitude, close quarters manoeuvring, high work rate environment and adverse weather conditions. In this case the combination of factors immediately leading up to the accident resulted in the helicopter operating outside its performance envelope without having enough space and height to recover.

Safety action
As a result of this occurrence, the aircraft operator has advised the ATSB that they are taking the following safety actions:

The operator has provided a briefing to all of their pilots on the circumstances and the outcome of this accident. The pilot involved in this accident will be involved in future training and checking to enable the recognition and avoidance of the circumstances that saw the limitations and flight envelope exceeded. This training will become part of the operator’s annual training for all pilots conducting fire control operations.

Safety message
Fire control flying operations can involve challenges and complexities that require crews to maintain a heightened awareness of their aircraft’s operating limits and the environmental conditions. Flying within operating limits can ensure pilots have a performance margin to react to unforeseen circumstances.

About this report
Decisions regarding whether to conduct an investigation, and the scope of an investigation, are based on many factors, including the level of safety benefit likely to be obtained from an investigation. For this occurrence, no investigation has been conducted and the ATSB did not verify the accuracy of the information. A brief description has been written using information supplied in the notification and any follow-up information in order to produce a short summary report, and allow for greater industry awareness of potential safety issues and possible safety actions.

Preliminary report released about crash of Air Tanker 134

The accident occurred January 23, 2020 in Australia

ATSB preliminary report crash Air Tanker 134 Australia
Figure 1: Flight path of N134CG (white). Source: Google Earth, Aireon and RFS tracking data, annotated by the ATSB.

Today the Australian Transport Safety Bureau released a preliminary report about the crash of Air Tanker 134, an EC-130Q, that occurred January 23, 2020 while fighting a bushfire in New South Wales. The location was 50 km north-east of Cooma-Snowy Mountains Airport (near Peak View). All three members of the crew perished, First Officer Paul Clyde Hudson, Captain Ian H. McBeth, and Flight Engineer Rick A. DeMorgan Jr.

Below is the complete text of the report.


Preliminary report published 28 February 2020

Sequence of events
On 23 January 2020, at about 1205 Eastern Daylight-saving Time,[1] a Lockheed EC130Q (C‑130) aircraft, registered N134CG and contracted to the New South Wales (NSW) Rural Fire Service, departed Richmond RAAF Base, NSW. The crew had been tasked with a fire retardant drop over the ‘Adaminaby Complex’ bush fire.

After approaching the Adaminaby complex fire, the drop was unable to be completed and the aircraft was diverted to a secondary tasking, to drop retardant on the ‘Good Good’ fire (Figure 1). Witnesses reported seeing the aircraft complete a number of circuits, prior to completing the retardant drop. The drop was conducted on a heading of about 190°, at about 200 ft above ground level, with a drop time of approximately 2 seconds. The crew released about 1,200 US gallons (4,500 L) of fire retardant during the drop.

Witness videos taken of the aircraft leading up to the accident showed a number of passes conducted at varying heights prior to the retardant drop. Following the retardant drop (Figure 2), the aircraft was observed to bank left, before becoming obscured by smoke[2] after about 5 seconds. A further 15 seconds after this, the aircraft was seen flying at a very low height above the ground, in a left wing down attitude. Shortly after, at about 1316, the aircraft collided with terrain and a post-impact fuel-fed fire ensued. The three crew were fatally injured and the aircraft was destroyed.

ATSB preliminary report crash Air Tanker 134 Australia
Figure 2: Overview of the drop zone (red fire retardant) and accident location. Source: ATSB

A review of the Airservices Australia audio recording of the applicable air traffic control frequency found no distress calls were made by the crew prior to the impact.

Wreckage and impact information
The accident site was located on slightly sloping, partially wooded terrain, about 50 km north-east of the Cooma-Snowy Mountains Airport. The wreckage trail (Figure 3) was approximately on a heading of 100°, with the initial impact at an elevation of about 3,440 ft above mean sea level.

The ATSB’s on-site examination of the wreckage, damage to the surrounding vegetation, and ground markings indicated that the aircraft initially impacted a tree in a left wing down attitude, before colliding with the ground. The post-impact fuel-fed fire destroyed the aircraft. The examination also found that an emergency dump of the fire retardant had not been activated.

The engines, propellers, and several other components have been retained by the ATSB for further examination.

ATSB preliminary report crash Air Tanker 134 Australia
Figure 3: Aircraft impact and wreckage. Source: ATSB

Aircraft information
The Lockheed C-130 is predominantly an all-metal, high-wing aircraft, largely designed for military operations. The aircraft was manufactured in 1981 and was powered by four Allison T56-A-15 turboprop engines, fitted with Hamilton Sundstrand 54-H60-91 four blade propellers. Previously owned by the United States Navy, the aircraft was re-purposed for firefighting activities and registered as N134CG in 2018 (Figure 4). The modifications included the installation of an avionics package and firefighting tank system known as Retardant Aerial Delivery System XXL (RADS).

The RADS included a 4,000 US gallons (15,000 L) tank system located within the aircraft’s fuselage. The system was capable of delivering discrete quantities of retardant, dependent on the duration that the doors remained open. It was controlled from the cockpit, with drop controls located on both the pilot and copilot yokes. The system also included an emergency dump switch, which, when activated, fully opened the doors and jettisoned the load. The doors remained open until the RADS was reset by the crew.

N134CG arrived in Australia in November 2019, but had previously operated in the country during the 2018‑2019 fire season. The aircraft was designated as a ‘large air tanker’.

ATSB preliminary report crash Air Tanker 134 Australia
Figure 4: N134CG. Source: Coulson Aviation

Meteorological information
A Bureau of Meteorology graphical area forecast, issued at 0924 and valid for the time of the flight, forecast moderate mountain wave activity above 3,000 ft (above mean sea level) in the area of operation from Richmond to Cooma, and included the Adaminaby and Good Good fire grounds. A SIGMET[3] issued at 0947 forecast severe turbulence below 10,000 ft.

The aerodrome forecast for the Cooma-Snowy Mountains Airport[4] was amended at 0948, and indicated wind speeds of 30 kt, gusting to 48 kt, with a mean wind direction of 320°. It also included blowing dust and visibility of 2,000 m, with severe turbulence below 5,000 ft above ground level.

The weather observations recorded at the airport about 11 minutes prior to the accident, indicated a wind speed of 25 kt, gusting to 39 kt, from a direction of 320°, with visibility reduced to 6,000 m.

Cockpit voice recorder
Cockpit voice recorders (CVR) are designed on an endless loop principle, where the oldest audio is continuously overwritten by the most recent audio. The CVR fitted to the aircraft was a Universal model CVR-30B, part number 1603-02-03, serial number 1541. This model of recorder used solid-state memory to record cockpit audio and had a recording duration of 30 minutes.

The CVR was recovered from the aircraft and transported to the ATSB’s technical facility in Canberra, Australian Capital Territory, on 25 January 2020 for examination and download. The CVR was successfully downloaded, however, no audio from the accident flight had been recorded. All recovered audio was from a previous flight when the aircraft was operating in the United States.

Further investigation
The investigation is continuing and will include consideration of the following:

  • Engine, gearbox and propeller component examinations
  • Aircraft maintenance history
  • Aircraft performance and handling characteristics
  • Impact sequence
  • Analysis of numerous witness reports
  • Review and analysis of the available recorded data, including witness videos, aircraft tracking data, audio recordings and any onboard systems
  • Review and analysis of environmental influences
  • The crew’s qualifications, experience and medical information
  • The nature of aerial fire-fighting operations
  • Operating policies and procedures
  • Exploring the possible reasons why the CVR did not record the accident flight
  • Similar occurrences

The ATSB will continue to consult with the engine and airframe type certificate holders. Accredited representatives from the United States National Transportation Safety Board (NTSB) have been appointed to participate in the investigation.

Acknowledgments
The ATSB acknowledges the support of the NSW Police Force, NSW Rural Fire Service, NSW Fire and Rescue, the Australian Defence Force, and those involved with facilitating safe access to an active fire ground and supporting the ATSB’s on-site investigation team.

_________

The information contained in this preliminary report is released in accordance with section 25 of the Transport Safety Investigation Act 2003 and is derived from the initial investigation of the occurrence. Readers are cautioned that new evidence will become available as the investigation progresses that will enhance the ATSB’s understanding of the accident as outlined in this preliminary report. As such, no analysis or findings are included.

_________

  1. Eastern Daylight-saving Time (EDT): Coordinated Universal Time (UTC) + 11 hours.
  2. From the video, it was unclear if the aircraft flew behind the smoke or entered the smoke.
  3. Significant meteorological information (SIGMET): a weather advisory service that provides the location, extent, expected movement and change in intensity of potentially hazardous (significant) or extreme meteorological conditions that are dangerous to most aircraft, such as thunderstorms or severe turbulence.
  4. The Cooma-Snowy Mountains Airport has an elevation of 3,106 ft.

MIL-8 MTV helicopter filmed in Australia

MIL-8 helicopter
The MIL-8 helicopter operated by Hevilift. Screenshot from the video.

The video below published January 10, 2020 features a  helicopter operated by Hevilift that was becoming available to help firefighters in Australia.

The on scene reporter said the helicopter can carry 5,000 liters (1,300 gallons), which is half of the capacity of an Air-Crane helicopter. Large and very large air tankers can carry 3,000 to 19,000 gallons.

The MIL-8 MTV did not extract the UH-1H helicopter that earlier ditched into a lake, as stated in the video. The Royal Australian Navy and Royal Australian Army pulled it out of the water.