In an emergency, obey the cabin crew without question.

If the damage is only to the middle treads, the tire is serviceable.

Identify the assembly with the correct color.

Examine the opening for cracks that start at its corners.

The external diameter must be concentric to the internal diameter.

Table 1 gives alternative adhesives which you can use.

Make a selection from the available shims to get the correct thickness.

If the filler bonds to the tool, make the tool moist with cold water.

Give temporary protection to areas of bare metal.

If you cannot remove a bolt because of corrosion, apply penetrating oil.

Do not use solvents that contain chlorine to clean parts with a Rilsan coating.