Dunlop Aircraft Tyres is recommending owners and operators take a number of steps to preserve aircraft tires during extended storage. The practices are applicable to all tires, including those on the main and nose landing gear, as well as new and retreaded tires, it said.

Tires exposed to aircraft deicing fluid should be washed with clean water and plastic covers installed over them. Their pressure should be maintained at the level stated in the aircraft maintenance manual and checked with the appropriate tire gauge at least every five days while the aircraft remains parked. If a tire is found to be at less than 80 percent of its correct inflation pressure, Dunlop said it and its mating tire must be removed from the aircraft.

Moreover, if a tire is flat, it shouldn’t be re-inflated because damage to its internal structure might have occurred. Additionally, wheels should be rotated at least every two weeks by 90 degrees. Doing that will relieve flat spots. Finally, before the aircraft is moved, check to ensure all tires are at their correct inflation.

The flight crew might notice vibrations during taxi and takeoff that is caused by flat spots after a long period of storage. They should diminish after the initial aircraft movement, Dunlop said, adding that maintenance should inform flight crews to expect these vibrations.