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ATSB Interim Report on Rottnest Seaplane Crash Flags Stall Warning and Survivability Risks

Investigators say they will issue urgent safety notices if required ahead of a final report expected in the second half of 2026.

Overview

  • The report outlines that the Cessna 208 accelerated in a strong crosswind, struck swell after passing Phillip Rock, lifted off, rolled left at about 16 feet, and then the left wing hit the water.
  • Passenger video captured no stall alert and the stall warning circuit breaker was found disconnected, as the operator noted some pilots have reportedly pulled the breaker for water take-offs due to false alarms.
  • Maintenance records show the aircraft was largely inactive from June 2021 until late December 2024, with investigators finding little evidence of required engine preservation during most of that period.
  • Wreckage examination found both wings hinged backward with trailing edges penetrating the cabin near the second row, focusing the probe on crashworthiness and passenger survivability.
  • The ATSB is reviewing the pilot’s choice of an easterly take-off in challenging wind and sea conditions and the operator’s procedures and oversight for Thomson Bay operations.