What happened
During a night operation at Brisbane Airport, an aircraft began its takeoff roll from the edge of the runway rather than the centerline. Radar data indicated that after the initial movement from an intersection (A7) departure, the aircraft subsequently moved across toward the runway centerline. At the time of the incident, the airport's taxiway and runway lighting systems were fully operational.
The investigation
The investigation examined the environmental and operational conditions present during the departure. It was noted that the airport lacked lead-in lights to assist pilots in aligning with the runway centerline. Furthermore, the aircraft's taxi light provided very limited visibility to the pilot during the taxi and potential takeoff phases.
Operational factors also played a role. The pilot reported feeling rushed following the receipt of line-up clearance from the Aerodrome Controller (ADC). This sense of urgency was compounded by the controller issuing a frequency change while the pilot was still performing necessary line-up checks. While Airservices noted that no actual urgency existed due to a 30-second wake turbulence delay and no conflicting traffic on final approach, the pilot experienced a significant perception of time pressure.
Findings
- The aircraft was positioned on the runway edge during the start of the takeoff roll.
- Perceived time pressure and the distraction of a frequency change during critical checks hindered the pilot's ability to detect the misalignment.
- The absence of lead-in lights on the taxiway contributed to the difficulty in centering the aircraft.
- The limited brightness of the aircraft's taxi light reduced visibility during the maneuvering process.