The pilot of a Cirrus SR22 conducted a forced landing on the Mitchell Highway in central NSW after the light aircraft experienced an engine failure and in-flight fire, an ATSB investigation report details.
On 24 January 2025, a pilot and a passenger were flying from the Gold Coast to Mildura.
About three hours into the flight, while approximately 150 km north-west of Dubbo and cruising at about 8,000 ft, the aircraft's engine oil pressure decreased below normal operating limits.
In response the pilot began to divert for a landing at Nyngan. But as they were making a PAN PAN radio call announcing their intentions, they heard the engine begin to 'rev up', followed by a 'bang'.
The pilot then made a MAYDAY broadcast to ATC, advising that the engine had experienced a mechanical failure and they would be making an emergency landing on the Mitchell Highway, east of Nyngan.
As ATC acknowledged the broadcast, the pilot observed flames 'pouring' from the top of the cowl.
The report notes the pilot elected not to deploy the aircraft's ballistic recovery parachute due to concerns that the fire was fuel related, and that a parachute-assisted landing may result in injuries to the passenger, who was pregnant.
Instead, the pilot began an emergency descent, putting the aircraft into a 'dive' in an attempt to put out the fire. The fire self-extinguished, but smoke began to enter the cockpit.
Despite the subsequent reduced visibility, the pilot proceeded to navigate the aircraft to land on the highway, while avoiding road traffic, for a successful forced landing with no injuries.
"The pilot's timely and effective decision-making, likely supported by their experience on the aircraft type and knowledge of its performance capabilities, mitigated the risk of injury and further damage to the aircraft," ATSB Director Transport Safety Dr Stuart Godley said.
Dr Godley noted in-flight engine failures in single-engine aircraft often result in the pilot experiencing high workload and time pressure, making preparedness critical.
"This incident demonstrates how the 'aviate, navigate, communicate' framework establishes a clear hierarchy of priorities, particularly during emergencies," he continued.
"Acting in the appropriate order of priority improves situational awareness and supports coordinated responses in a dynamic environment."
After the landing, the pilot inspected the engine and found the crankcase had ruptured adjacent to cylinder 6, below the induction duct assembly. A connecting rod had separated from the crankshaft and the air filter was visibly damaged by fire.
A disassembly and inspection of the engine had yet to be conducted at the time of publication of the ATSB's investigation report. As a result, the ATSB was unable to determine the root cause for the loss of oil pressure or the mechanical failure of the engine.
"Although engine failures are relatively rare, they do happen," Dr Godley concluded. "Given the potential severity of the consequences of an engine failure or power loss in a single‑engine aircraft, such occurrences therefore need to be planned for and managed appropriately."
