ATSB report details sequence of events leading to 737 accident in Western Australia
An ATSB preliminary report has detailed the sequence of events leading to a Boeing 737 large air tanker’s impact with a ridgeline in Western Australia’s Fitzgerald River National Park while conducting an aerial fire-fighting task on 6 February 2023.
The preliminary report outlines factual information collected in the on-going investigation’s early evidence collection phase, and details that the modified Coulson Aviation-operated 737 air tanker, callsign ‘Bomber 139’, with two pilots on board, had departed from Busselton Airport to assist fire control efforts near Hopetoun, about 600 km south-east of Perth.
“Arriving at the fire ground, the 737 crew was briefed by a bird-dog aircraft that the tasking was to tag and extend an existing retardant line,” said ATSB Chief Commissioner Angus Mitchell.
“The retardant line was to extend downslope, with the bird-dog briefing the 737 crew that their target altitude (above sea level) was 500 feet descending to 400 feet.”
Flight recorder data shows that Bomber 139 descended to about 400 ft and completed a partial drop of three-quarters of their tank before the captain, who was pilot flying, stopped the drop because their retardant line was entering a burnt area.
Bomber 139 then repositioned to commence another drop to use the remaining retardant to further extend the retardant line.
During the second drop, Bomber 139 descended through 400 ft altitude – or 80 ft above ground height – at an airspeed of 110 kt with the engines at high idle as the retardant line was extended downslope.
“Flight recorder data shows the throttles were advanced and the engines had accelerated just before the aircraft struck a ridgeline with the stick shaker activating. The aircraft then cleared a small line of foliage, before impacting the ground a second time and sliding to rest,” said Mr Mitchell.
“Fortunately, and remarkably, both pilots were able to exit the aircraft through a cockpit window, and suffered only minor injuries.”
The aircraft was subsequently consumed in a post-impact fire.
“Despite extensive fire damage, ATSB recorders specialists in our Canberra technical facilities were able to download files from both the flight data recorder and cockpit voice recorder,” Mr Mitchell said.
Key points:
- 737 had been tasked to tag and extend a line of fire retardant which extended downslope
- Flight data and cockpit voice recorder downloads instrumental in establishing accident sequence of events
- Preliminary report outlines factual information collected in the on-going investigation’s early evidence collection phase
“As well as information from those recorders, interviews with the flight crews, a 3D map of the accident site created using a drone, and other recorded flight information will be instrumental to the ongoing investigation.”
ATSB investigators have also collected documents and recorded data from the operator as well as records from the WA Department of Fire and Emergency Services.
“The investigation is continuing and will include validation of the recorded data and reviews of the communication procedures for bird-dog and large air tanker pilots, the operator’s crew resource management procedures and practices, and standards and safety margins for 737 retardant drops.”
The preliminary report notes that following the accident, the operator increased their large air tanker minimum retardant drop heights and airspeeds.
Mr Mitchell said that a final report, containing findings and the analysis to support those findings, will be released at the conclusion of the investigation.
“However, should a critical safety issue be identified at any time during the course of the investigation, the ATSB will immediately notify relevant parties so appropriate and timely safety action can be taken.”
Email the Travel Weekly team at traveldesk@travelweekly.com.au
atsb Australian Transport Safety Bureau aviation aviation incident boeing Boeing 737Latest News
Travel Weekly announces a new team to helm Australia’s No.1 travel trade title
Some shameless self-promotion from us, but we thought you needed to know who's bringing you the news.
IHG reveals plans for Brisbane’s first Kimpton in 2028
Just another reason to book that trip to Brisvegas. But don't jump the gun, it's not open until 2028.
Cruiseabout’s first store in five years opens in Perth
Perth gets a break from being behind the rest of the country with the addition of the first Cruiseabout store.
ATAS complaints process acknowledges non-economic loss
A High Court case win over 'disappointment and distress' on a cruise gone wrong prompts ATIA complaints change.
Cunard previews new Queen Anne
Yep, this one does exactly what it says on the tin.
Bunnik Tours unveils latest expansion to Iceland
Just as the Icelandic vikings did many years ago, Bunnik is expanding into new territories.
Australia’s first glamping retreat turns 25
25th anniversary gifts usually come in silver. Ours comes in the way of a news story.
Embrace the journey: Traversing the world with the Shokz OpenRun
If you’ve been on the wrong side of a final call in the airport, or missed the stop on rail journey, it might be time to invest in a pair of Shokz OpenRun headphones. Originally marketed as headphones for fitness fanatics, runners or cyclists with a keen to steer clear of a prang with a car, […]
Tourism Western Australia MD Carolyn Turnbull departs
Turnbull hints her new role will see her staying in the tourism and hospitality industry and who can blame her?
DriveAway launches Brit-Euro Blitz campaign
If agents can put the foot down quick enough and get involved, there are some great prizes to be won.
Fly and Stay Free with the Great Southern
Unlike those dodgy scam phone calls you're getting more and more of, there's no strings attached to this deal.
Sober travel and TikTok guide Australian Gen Z trips
Can you call it a sober holiday if you enjoy a few glasses of red on the flight? We think yes.
Travel DAZE Exec Agenda REVEALED: top execs to speak on airline competition
As the industry reels from Bonza's implosion, it is more important than ever to ask the big questions.
TTC: Deals are driving up demand for September trips
The latest market research from TTC Tour Brands shows interest in international leisure travel remains high for 2024, with 77 per cent of Australians over 18 still planning trips this year. Notably, 28 per cent of those travellers are eyeing September for their journeys. Europe continues to be the most popular destination, with 68 per […]
Skroo says Rex will need deep pockets to fill lost Bonza slots
The door is open for Rex, and anyone else who wants to launch a regional Aussie airline...
Sno’n’Ski Holidays unveils 2025 mega famil to Colorado!
Let the games begin - this is certainly not a famil that you will want to miss!
Walk Japan launches Kyoto: Mountains to the sea walking tour
There are two types of people, one who enjoys walking on holiday and another who enjoys sipping Mojitos by the pool.
Which destination had a 48% boost in bookings following 10 MILLION TikTok views?
Here's a clue: it's not Malabar Beach.
Asher Telford appointed General Manager of SeaLink Whitsundays
Telford has plenty of reasons to smile after SeaLink doubles down and makes him GM after buying his tourism operation.
Qantas ‘working urgently’ to fix app data leak
Qantas is looking into customer reports that passengers have this morning been able to access other passengers’ personal information on the airlines app. X user Lachlan posted that he was able log into different accounts every time he opened the app. My @Qantas app logs me in to a different person each time I open […]
Hilton Expands Presence in North Queensland with the signing of Hilton Garden Inn Townsville
Heading to a North Queensland Cowboys clash? Hilton Garden Inn Townsville is set to open, but not until 2026.
Rail Europe ANZ: making dream journeys come true
Rail Europe's running a lottery! You're not going to win millions, but you might just snag a free holiday.
Bonza’s future on knife edge
It would seem a long road back from here, perhaps a knife's edge is too much credit.
Revamped Wailoaloa Beach hotel opens as Crowne Plaza Fiji Nadi Bay Resort & Spa
Crowne Plaza Fiji Nadi Bay Resort & Spa is open and ready for bookings after the first phase of a multi-million-dollar transformation. Part of IHG Hotels & Resorts’ premium collection, the transformation has seen the completion of 106 guestrooms showcasing contemporary interiors reflective of the premium Crowne Plaza brand and is a first for the […]
Nielsen Data reveals brands spending big to attract Aussie tourists
Trip A Deal, Virgin and Ignite Travel walk into a bar, blow their cash on travel advertising instead of the pokies.
Kamalaya Koh Samui clinches clutch of wellness awards
Kamalaya Wellness Sanctuary & Holistic Spa has so far clinched five prestigious awards in 2024, including being inducted into the ‘Hall of Fame’ at the World Spa & Wellness Awards in London. Founders of the Koh Samui sanctuary and spa John and Karina Stewart expressed their heartfelt gratitude for the awards. “We are profoundly honoured […]
Jetstar offers 200,000 return for free flights to celebrate 20th anniversary
Jetstar hits 20 and everyone else gets the presents with free return flights to domestic and international destinations.
Amora Hotels & Resorts set to double APAC portfolio, announces new Sydney office
Staff in the new Sydney office have been welcomed by a week of rain on the forecast.
RIU opens Chicago hotel and rooftop bar a few steps from the world-famous Magnificent Mile
Rooftop cocktails hold a dear place in your heart? Look no further than RIU Chicago.
How can travel agents best sell cruises? Uniworld’s Alice Ager tells all: Travel Weekly TV
Agents, you don't want to miss this. Yes, that's the case with everything in the newsletter, but we really mean it here!
South Africa bookings are back in action
It's a wrap! South Africa in the news with resumed flights, film fest and booking tech.
Agents’ chance to score free spot on Intrepid trip to Antarctica
This is the trip of a lifetime, even if you are scared of the cold!
Bonza nosediving amid mass cancellations and reports of repossessed planes
Bonza's days appear to be numbered as the low-cost carrier today announced mass cancellations around the country.
Amy Poehler joins Vivid Sydney event
Oh Joy! Hit comedian Amy Poehler will make an emotional appearance at the Sydney Opera House for Vivid.
Pullman Sydney Penrith ties up with Trilogy Hotels, announces new GM
The crew from Trilogy hotels doing their best impression of the Penrith front row here.
Linkd appoints Carolyn Nightingale and Lawson Dibb to new roles
Linkd Tourism sings praises of Carolyn Nightingale and dubs Lawson Dibb as Kyushu Tourism Office guru.