Document ID: chunk:federal_register_of_legislation:F2005L02838:body:0:p2
Version: federal_register_of_legislation:F2005L02838
Segment Type: other
Provision Reference: 
Character Range: 2782–3992

the RH brake system.  During the subsequent troubleshooting, it was noted that the attachment holes in the control levers of the RH MLG (Normal and Alternate) brake cables were worn out to an extent that imminent failure was likely to occur.  The aircraft (and the affected levers) had accumulated 21,460 flight hours and 15,583 flight cycles. Further investigation showed that the abnormal brake behaviour had been caused by a (unrelated) failure of the RH Normal Brake Control Valve. Fokker Services have determined that a disconnect of one or two of the lower cables would not affect the intended braking action on the MLG involved.  However, this condition, if not corrected, can lead to unintended (uncommanded) braking due to the loss of cable tension on the lower side of the levers, possibly resulting in loss of control of the aircraft during the take-off run, landing roll-out or taxiing.  Since an unsafe condition has been identified that may exist or develop on aircraft of the same type design, this Airworthiness Directive requires a one-time inspection and, if necessary, replacement of the brake control levers.

James Coyne
Delegate of the Civil Aviation Safety Authority

16 September 2005