Pilots, aircraft owners, mechanics, and manufacturers universally want the aircraft we fly to be safe. The devil is in the details, however, and what constitutes a “safe aircraft” can often become the subject of debate between owners and mechanics. The FAA creates regulations; manufacturers create service guidance; and mechanics are left on the front lines to add their experience in an effort to maintain an airworthy and safe aircraft.
Source: aopaAircraft Maintenance: When is ‘mandatory maintenance’ really mandatory?