Chapter 12. Publications, Forms, & Records §43.2 Records of overhaul and rebuilding These terms are not defined in part 1, and are given full explanation in this subpart. Each term states that it may not be used to describe work done on an aircraft, airframe, aircraft engine, propeller, appliance, or component part unless that item has been: Disassembled, Cleaned, Inspected, Repaired as Necessary, Reassembled, and Tested, The key difference between the two terms is in determining how the item will be tested. If it will be “tested in accordance with approved standards acceptable to the Administration which have been developed and documented by the manufacturer, the item is said to be overhauled." This is basically another way of describing “service limits," which is a term frequently used to describe manufacturer specified acceptable limits for used parts. A “rebuilt" item, on the other hand, must be tested to the same tolerances and limits as a new item. §43.3 Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations There are nine different persons who may perform maintenance: (Reminder: Per part 1, the FAA definition of a person is “an individual, firm, partnership, corporation, association, joint-stock association, or governmental entity. It includes a trustee, receiver, assignee, or similar representative of any of them.") Certified mechanic per part 65. Certified repairman per part 65. Person working under the supervision of a certified mechanic or repairman. Holder of repair station certificate. Holder of an air carrier certificate. Holder of pilot certificate (other than a sport pilot certificate) may perform preventive maintenance on an aircraft he or she owns or operates. This does not apply to aircraft operated under part 121, 129, or 135. (Note: Preventive maintenance is identified in appendix A, paragraph C of this part.) Pilot of a rotorcraft (when operated under part 135 and in remote areas) may perform specific preventive maintenance actions. These actions may only be accomplished under the following conditions: The mechanical difficulty or malfunction occurred enroute to or in the remote area. The pilot has been satisfactorily trained and is authorized in writing by the certificate holder to perform the required maintenance. There is no certificated mechanic available. The certificate holder has procedures to evaluate the work performed when a decision for airworthiness is required. The work done is listed in paragraph (c) or Appendix A of this chapter. Holder of part 135 certificate may allow pilots of aircraft with nine or less passenger seats to remove and reinstall cabin seats and stretchers, and cabin mounted medical oxygen bottles. These actions may only be accomplished under the following conditions: The pilot has been satisfactorily trained and is authorized in writing by the certificate holder to perform the required maintenance The certificate holder has written procedures available to the pilot to evaluate the work performed Manufacturer may inspect and rebuild any item it has manufactured.

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