Engine Preservation Protocol

This web page provides the source material for the maintenance preservation protocol to support the Continued Airworthiness flights.

Note –  The content of this web page has been compiled by the Aero Club’s Sections & ARO Approved Persons Panel of experts on engines to assist aircraft owners on the best protocol to use related to their aircraft and engines. If you have appropriate and approved OEM documentation, these should take precedence.

Group 1 & 2 – Horizontally opposed piston engines

Group 3A – In-line piston engines

Group 3B – In-line 2 stroke piston engines

Group 4 – Radial engines

Group 6 – Other engines