Document ID: chunk:federal_register_of_legislation:F2006B06446:body:0:p2
Version: federal_register_of_legislation:F2006B06446
Segment Type: other
Provision Reference: 
Character Range: 2776–3741

A020-2 frames were also failing before reaching the retirement life. This Directive was raised to highlight the directed visual inspection in the Maintenance Manual for later A020-2 frames.

           Since issue of this Directive several more frames have been found cracked and two reports of frames failing in flight have been received. Most failures occurred on aircraft used in mustering roles in which the fatigue loads on the frame may be more severe. This reduces the fatigue life and requires more stringent inspections.

           This Amendment reduces the visual inspection interval for aircraft engaging in aerial work. An immediate inspection is recommended if any unusual vibration is felt when the aircraft is in flight.

           The inspection intervals may be extended if the frame is strengthened appropriately. Any such scheme must be approved through a CASA District Office and by the manufacturer before being incorporated in the aircraft.