lycoming

AR refers to parts or units that were removed from an aircraft and are now listed for sale. These could state a reason or occasionally be unrepairable after the product’s life.

IN code is used for parts that have been inspected for basic requirements along with different checklists of maintenance inspection if stated alongside.

FN indicates the condition of a product that is brand new from the factory. For it to be FN, the product should not be more than two years old since manufacturing.

NE refers to a piece of new equipment or part that has no operation time and zero working cycles on it. A resold item can also have an NE tag as long as it was never used. The manufacturing date on NE items is not considered to assign this code, and only the operation of the new part is indicated.

MD code is used to define the condition of a product or unit that has been modified or altered in minor or major ways. In some cases, the details of the modification might be stated.

OH condition refers to the possible overhauling of the product or equipment. This could involve completely or partially disassembling the product and restoring it to an optimum/maximum level of functionality.

RP refers to a product that has been repaired and might need some more work for optimum functionality. These parts are commonly used for functional tests compliance to use repaired parts and bring the unit to a serviceable stage.

SV indicated a serviceable part. This means that the part is repaired and passed the functional tests. The exact specifications of the condition might also be stated at times.