Category Archives: Control Surfaces

Thursday 11th April 2019

Andy is here for another day so I can work on some outstanding things that need doing on the the wings.

With Andy here he can help me move the wings so I can get some of the outstanding work on them done.

The aileron hinges are of the piano top and need to be fitted, lubricated and locked in position with split pins.

The split pins I need are 1/16″ x 3/8″ but I only have a longer version so they are cut down in size with side cutters.

They are fitted from the top of the wing so they can’t fall out in service if the locking fails.

The ends are bent over to lock the pins in place.

The Aileron actuator and flap hinge bolts are fitted and tightened against the bearing. They have Nyloc nuts to prevent them becoming loose.

A check for free movement after tightening is made.

To check any movement I’ve run some torque seal over the nut and threads. If the torque seal cracks it indicates movement and will need to be checked.

The hinge is lubricated with white lithium grease.

Once completed, the exact same work is carried out on other wing.

The elevator hinge is also a piano hinge so will need to have the same work carried out as the ailerons. The trim tab is already fitted and the hinge is secure when manufactured.

There’s two pieces of wire in the elevator which needs to be adjusted and secured at both ends and lubricated with white lithium grease.

I decided to change the landing light retaining screws to black cap head screws which I think look better.