Page 15 - Volume 10 Number 10

An aft flap track assembly on a King Air, which extends pretty far into the wing structure and means several labor hours if an assembly needs replaced.
The flap track assembly extends pretty far into the wing structure. If condemned, it means big bucks to change it as many hours of labor are required. To be absolutely certain about this flap track, we stripped the paint and measured carefully. It was exactly at max limits for wear.
Whew! The owner dodged a big expensive bullet on that one! But if there is no more leeway left on this flap track, how much longer will it last? I don’t have a crystal
ball, but it will last longer than you’d think provided it is regularly inspected and properly maintained. The washer and bearing should be replaced before they get really bad, and the dry lube called for by the maintenance manual must be applied.
You can check your own King Air to see if the washers and rollers are in the correct position. For a 90 or 100 model, put the flaps down and stand at the trailing edge of any flap. For a 200, 300 or 350, choose either outboard flap.
OCTOBER 2016
KING AIR MAGAZINE • 13