ATA 32

Landing Gear Axle Corrosion
Most Westwind 1124 / 1124A operators are aware that the main landing gear axles are susceptible to internal corrosion. Moisture is the main contributor to this condition, as it becomes trapped in the bore of the axle. It can enter from the anti-skid transducer conduit or from the end plug of the axle itself. Corrosion within the limits set forth in the Westwind Maintenance Manual Chapter 32-10-01 can be removed. Unfortunately, pitting beyond the maintenance manual limits is cause for axle rejection. Be sure your maintenance facility properly coats the axle bore with DC4 and seals the axle cap and top of the anti-skid transducer conduit with sealer. Attention to this detail may prevent axle replacement.