The pressure decreases while the tires become cool.

The exhaust gas temperature indicator, on piston engine powered airplanes, is the instrument used to identify the lean fuel flow mixtures for various power settings.

Pressure Altitude refers to altitude measured from standard sea level pressure (29.92 in. hg.) by a pressure or barometric altimeter. It is the indicated pressure altitude corrected for position and instrument error. In this Handbook, altimeter instrument errors are assumed to be zero.

Airplane certification conditions include one engine becoming inoperative and windmilling (or, in airplanes with autofeathering devices, feathered), not more than a 5° bank toward the operative engine, takeoff power on the operative engine, landing gear up, flaps in the takeoff position, and the most critical C.G.

Wing and power loading is based on the Maximum Takeoff Weight and the Takeoff Horsepower Rating and the Wing Area.

Pilots Operating Handbooks are appropriate on airplanes having a certification basis of FAR 23 except Commuter Category.

This handbook includes the material required to be furnished to the pilot by the federal aviation regulations and additional information provided by the manufacturer and constitutes the FAA approved airplane flight manual.

Those units and components which furnish a means of supporting and steering the aircraft on the ground or water, and make it possible to retract and store the landing gear in flight. Includes brakes, wheels, floats, doors, shock struts, tires, linkages, position indicating and warning systems.

Flight Controls System refers to those units and components which furnish a means of manually controlling the flight attitude characteristics of the aircraft, including items such as hydraulic boost system, rudder pedals, control column linkages, control cables, tab controls, mounting brackets, etc.

Tank and reservoir capacities in U.S., imperial and metric measure, shall be included. ANA or other standard specification number and grade (if applicable) of fuel, oil, fluid, and other material used shall be given. Specifications and grades shall be shown grouped on one page to facilitate revisions. For fuel, given expansion volume, total fuel capacity, sump capacity, net fuel capacity (as applicable). For oil, given allowance for expansion.

Chapter 26 is entitled "Fire Protection", and is about those fixed and portable units and components which detect and indicate fire or smoke, and store and distribute fire extinguishing agent to all protected areas of the aircraft, including bottle, valves, tubing, etc., if furnished as manufacturer designated standard equipment.