Narrative:

Adjustment locking mechanism failed on first officer's rudder pedals. Waiting on the runway for takeoff clearance; captain set the parking brake and transferred control of aircraft. Takeoff clearance was given; parking brake released; power set to 50 percent N1. As the aircraft started to roll and needed ground directional control; both first officer rudder pedals pushed all the way to their full travel together with no directional or braking control. Checked that the adjustment handle was in the stowed/locked position. Pedals still failed. Transferred aircraft control to captain; he rejected the takeoff; slowed the aircraft to exit at the first taxiway. Speed at occurrence was approximately 30 knots. Stopped on the taxiway; confirmed that the locking mechanism had failed and returned to gate. Mechanical failure of the first officer's rudder pedals. Other than a personal setting adjustment at the gate; there is no procedure to check first officer's rudder pedals for proper movement and use. Failure was not found until actual use for ground directional/flight is required. I would suggest adding a procedure to check first officer rudder pedals for proper movement and use.

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Original NASA ASRS Text

Title: An A320 series First Officer rudder pedals traveled full forward together with the handle in the stowed/locked position so the Captain rejected the takeoff and returned to the gate.

Narrative: Adjustment locking mechanism failed on First Officer's rudder pedals. Waiting on the runway for takeoff clearance; Captain set the parking brake and transferred control of aircraft. Takeoff clearance was given; parking brake released; power set to 50 percent N1. As the aircraft started to roll and needed ground directional control; both First Officer rudder pedals pushed all the way to their full travel together with no directional or braking control. Checked that the adjustment handle was in the stowed/locked position. Pedals still failed. Transferred aircraft control to Captain; he rejected the takeoff; slowed the aircraft to exit at the first taxiway. Speed at occurrence was approximately 30 knots. Stopped on the taxiway; confirmed that the locking mechanism had failed and returned to gate. Mechanical failure of the First Officer's rudder pedals. Other than a personal setting adjustment at the gate; there is no procedure to check First Officer's rudder pedals for proper movement and use. Failure was not found until actual use for ground directional/flight is required. I would suggest adding a procedure to check First Officer rudder pedals for proper movement and use.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.