FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

When repairing puncture type damage of a metal faced laminated honeycomb panel, it is important to taper the edges of the doubler to ensure a smooth transition between the patch and the panel. Option C of 100 times the thickness of the metal is the most appropriate tapering distance as it provides enough surface area for an effective bond without adding excessive weight to the panel. Options A and B of 10 and 50 times the thickness of the metal are too small and may result in a weak bond, while option D of 200 times the thickness of the metal is too large and may add unnecessary weight to the panel. It is important to carefully consider the thickness of the metal and choose a tapering distance that will provide the best balance between structural integrity and weight.