Do not use verbs that are general and vague.

A hole of several inches in diameter may be cut in a piece of metal at a point where the metal is not needed for strength, and the edges of the hole are flanged to give it rigidity.

Located in the flange connecting the generator and drive assemblies, ports make oil flow between the constant speed drive and the generator possible.

Once a certificate or approval is issued for a purpose that requires ongoing compliance, such as a Production Certificate, noncompliance with, or violation of the terms of, the approval would result in civil penalty or administrative enforcement action.

Aircraft maintenance manual or section, which includes at least the following information: introduction information that includes an explanation of the airplane＇s features and data to the extent necessary for maintenance or preventive maintenance.

The technique or procedure necessary to duplicate the performance presented shall be included for those items of performance where the attainment of the predicted airplane performance requires a special sequence of actions.

If fuel or lubricating oil spills, clean the area immediately. A wet surface is dangerous and can cause you to fall.

This Section must set forth each mandatory replacement time, structural inspection interval, and related structural inspection procedure required for type certification.

Through a process called continuing airworthiness, virtually every component comprising an airplane is involved in some form of preservation, inspection, preventative maintenance, overhaul, repair, and/or replacement activity.

You should pay attention to precautions and limitations such as use of landing gear and control surface locks, minimum turning radius, maximum towing and pushing loads on nose landing gear, etc.

Center of gravity is the point at which an airplane would balance if suspended. Its distance from the reference datum is found by dividing the total moment by the total weight of the airplane.