The fuel vent system keeps the pressure of the fuel tanks near the ambient pressure. Too large a pressure difference can cause damage to the wing structure.

The moment is the product of the weight of an item multiplied by its arm.

In addition, it shall provide definitions or explanations of symbols, abbreviations, and terminology used in the Handbook.

Arrows shall be used to indicate flow direction when needed to understand the schematic diagram.

Tighten the nuts but do not torque them at this time.

If you cannot remove a bolt because of corrosion, apply penetrating oil.

Make sure that there is no blockage of the pitot pipe.

All range distances shall be expressed in nautical miles.

Each graphical or tabular data presentation shall include one or more examples of the proper use of the data presentation unless its use is sufficiently simple that misuse or misunderstanding is improbable.

This Section of the Pilot＇s Operating Handbook shall contain all performance information required by the Federal Aviation Regulations (or other applicable regulations) and this Specification.

The Recommended Turbulent Air Penetration Speed