Document ID: chunk:federal_register_of_legislation:F2005L01700:body:0:p2
Version: federal_register_of_legislation:F2005L01700
Segment Type: other
Provision Reference: 
Character Range: 2782–4215

this Directive, and not previously inspected per the new 2,500 flight hour inspection; within 6 months or 300 flight hours after 29 June 2005.

                    Inspect thereafter at intervals not to exceed 2,500 flight hours.
                This Directive shall be entered on the Maintenance Release as maintenance required. The Requirement 1 Daily Check may be performed and certified by the Pilot in Command who has been trained to do the inspection by an appropriately qualified person.  In this case, a copy of this Directive and applicable Requirement document is to be carried in the aircraft.
                This Amendment becomes effective on 29 June 2005.
Background:     Transport Canada was advised of three occurrences of cracked main rotor grips and three occurrences of cracked pitch horns.  These cracks were found during routine inspection of the rotor head.  There was an immediate need for repeated daily checks and 25 hour visual inspections of the affected parts for cracking while the investigation into the cause of the premature failures and appropriate terminating action was being determined.

                Amendment 1 is issued to reflect the requirements of revisions of the related Transport Canada AD and Requirement documents, which introduce a newly developed enhanced inspection on the main rotor hub assembly.

David Villiers
Delegate of the Civil Aviation Safety Authority

23 June 2005