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AAP
AAP
National
Tara Cosoleto

Pilot 'drank significantly' before fatal WA plane crash

The Australian Transport Safety Bureau has released its report into a light aircraft crash in WA. (Lukas Coch/AAP PHOTOS) (AAP)

A pilot likely drank a significant amount of alcohol the night before he died in a light aircraft crash south of Perth, the transport safety bureau has found.

The single-engine Dynaero MCR-01 plane took off from Serpentine Airfield on the afternoon of December 28, 2020, for a post-maintenance check flight.

When the plane reached about 300 feet above ground level, the engine began to run rough.

The pilot started to turn left, but the aircraft appeared to decelerate, before it stalled and crashed into the ground.

The pilot, who was the sole occupant, died in the crash and the aircraft was destroyed.

The Australian Transport Safety Bureau on Thursday released its final report into the incident, finding multiple tasks in the aircraft's return to service were not adequately carried out.

The engine's left carburettor was missing a component and contained a significant amount of contamination, the report stated.

The pilot was also unfamiliar with the aircraft and engine type, which increased their risk of not being able to adequately manage an in-flight emergency.

The safety bureau also found the pilot had probably consumed a "significant amount" of alcohol the night before the incident, which increased their risk of post-alcohol impairment.

A number of airfield members had met for an informal social dinner the previous night, with witnesses saying the pilot engaged in "fairly heavy" drinking and appeared "really drunk".

The function ended about 1.30am on the day of the accident.

"Post-alcohol impairment can increase the potential for spatial disorientation for up to 48 hours," the report stated.

"While a pilot may be legally able to fly eight hours after drinking, the residual effects of alcohol may seriously impair their performance when they need it most, such as during an emergency."

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