KNOTS are used throughout to avoid the confusion between knots (KTS) and miles per hour (MPH) in performance charts and tables.

Complex sentence structure and the large number of meanings and synonyms that many English words have can cause confusion.

These FAA advisory circulars provide specific information regarding continued airworthiness requirements for the manufacturer and owner/operator.

The function and operation of each unit in the system should be described as well as the location of the units.

The index should show the chapter and subchapter in which a circuit of the system appears.

An alphabetical index by subject is to be included in the Introduction, as an assistance in locating the desired circuit.

For simplicity of presentation and understandability, complex systems should be divided into system-function rather than overall master schematic diagrams.

The two most common types of engines used in helicopters are the reciprocating engine and the turbine engine.

Acetone is a heavy-duty degreaser suitable for metal preparation and removing grease from fabric covering prior to doping.

The main frame of the wing includes spars, ribs, stringers, integral fuel tank structure, tip tank supporting structure and frames around openings.

Illustrations should be used whenever they will simplify, shorten, or make the text easier to understand.