Aircraft Wing Balance Adjustment

Study Notes

Identifying Wing-Heavy Condition

A wing-heavy condition is present when considerable control wheel pressure is required to keep the wings level during normal flight.

Correcting Wing-Heavy Condition

To correct the wing-heavy condition, two possible solutions can be applied:

Solution 1: Remove Wing Fairing Strip

Remove the wing fairing strip on the wing-heavy side of the airplane to alleviate the condition.

Solution 2: Adjust Bushings

Loosen nut (10) and rotate bushings (8) simultaneously until the bushings are positioned with the thick side of the eccentrics up.
This adjustment lowers the trailing edge of the wing, decreasing wing-heaviness by increasing the angle-of-incidence of the wing.

Eccentric Bushing Alignment

Rotating eccentric bushings simultaneously is crucial to maintain alignment between off-center bolt holes, preventing shearing force on the bolt and potential damage to the wing spar hole.
Rotating bushings separately will destroy this alignment.

Correcting Wing-Heavy Condition

If wing-heavy condition persists after initial setup, remove fairing strip on the lighter wing and loosen the nut.
Rotate eccentric bushings simultaneously until the thick side of the eccentric is down, which raises the trailing edge of the wing and increases wing heaviness to balance the opposite wing.

Testing and Adjustment

Perform a test flight to confirm wing-heavy condition correction.
If necessary, repeat the process of loosening the nut, rotating the bushings, tightening the nut, and reinstalling the fairing strip until the wing-heavy condition is resolved.

Description

This quiz covers the steps to adjust the wing balance of an aircraft when it requires considerable control wheel pressure to remain level in normal flight. It involves adjusting the angle of incidence of the wing to reduce wing-heaviness.