Document ID: chunk:federal_register_of_legislation:F2005L02841:body:0:p2
Version: federal_register_of_legislation:F2005L02841
Segment Type: other
Provision Reference: 
Character Range: 2742–3896

found in the LH MLG Bay.  The subsequent investigation revealed that a fuel line was chafed through, caused by interference with a hydraulic line.  During manufacturing of the aircraft, a minimum distance of three (3) mm (0.118 inch) was maintained between fuel and hydraulic lines.  During operation of the aircraft or during the accomplishment of maintenance tasks, loads induced on these lines can reduce this distance sufficiently enough to cause interference between them.  Interference between fuel lines and hydraulic lines can ultimately result in sufficient wear to the fuel lines to cause a fuel leak.  This condition, if not corrected, could lead to further cases of fuel leakage in the MLG Bay, in the vicinity of hot brakes, potentially resulting in a MLG Bay fire.  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 of the clearance between the fuel lines and hydraulic lines in the LH and RH MLG Bays and, if necessary, corrective action.

James Coyne
Delegate of the Civil Aviation Safety Authority

15 September 2005