Gross Weight (lb) Pressure Altitude (ft) 1,500 1,400 1,600 1,700 1,800 0 2,000 4,000 6,000 8,000 10,000 12,000 Outside air temperature 120°F 100°F Outside air temperature 80°F temperature 60°F Outside air temperature 40°F temperature 20°F Outside air temperature 0°F 8,000 FT DENSITY ALTITUDE MIXTURE FULL RICH Normal Procedures (Section 4) Performance (Section 5) Handling, Servicing, and Maintenance  (Section 8) Weight and Balance (Section 6) Aircraft and Systems Description  (Section 7) Figure 5-7.  One of the performance charts in the performance  section is the In Ground Effect Hover Ceiling versus Gross Weight  chart. This chart can be used to determine how much weight can  be carried and still operate at a specific pressure altitude or, if  carrying a specific weight, detrmine that specific altitude limitation. 5-5 The normal procedures section is the section most frequently  used. It usually begins with a listing of airspeeds that  may enhance the safety of normal operations. It is a good  idea to learn the airspeeds that are used for normal flight  operations. The next part of the section includes several  checklists, which cover the preflight inspection, before-  starting procedure, how to start the engine, rotor engagement,  ground checks, takeoff, approach, landing, and shutdown.  Some manufacturers also include the procedures for practice  autorotations. To avoid skipping an important step, always  use a checklist when one is available. More information  on maneuvers can be found in Chapter 9, Basic Flight  Maneuvers, and Chapter 10, Advanced Flight Maneuvers. The performance section contains all the information required  by the regulations and any additional performance information  the manufacturer determines may enhance a pilot’s ability to  operate the helicopter safely. Although the performance section  is not in the limitation section and is therefore not a limitation,  operation outside or beyond the flight-tested and documented  performance section can be expensive, slightly hazardous, or  outright dangerous to life and property. If the helicopter is  certificated under 14 CFR part 29, then the performance section  may very well be a restrictive limitation. In any event, a pilot  should determine the performance available and plan to stay  within those parameters. These charts, graphs, and tables vary in style, but all contain  the same basic information. Some examples of the performance  information that can be found in most flight manuals include  a calibrated versus indicated airspeed conversion graph,  hovering ceiling versus gross weight charts, and a height- velocity diagram.  [Figure 5-7]  For information on how to use  the charts, graphs, and tables, refer to Chapter 7, Helicopter  Performance. helicopters, the manufacturer may assume a higher degree of  knowledge. For more information on helicopter systems, refer  to Chapter 4, Helicopter Components, Sections, and Systems. The handling, servicing, and maintenance section describes  the maintenance and inspections recommended by the  manufacturer, as well as those required by the regulations,  and airworthiness directive (AD) compliance procedures.  There are also suggestions on how the pilot/operator can  ensure that the work is done properly. This section also describes preventative maintenance that  may be accomplished by certificated pilots, as well as the  manufacturer’s recommended ground handling procedures,  including considerations for hangaring, tie down, and general  storage procedures for the helicopter. The weight and balance section should contain all the  information required by the FAA that is necessary to calculate  weight and balance. To help compute the proper data, most  manufacturers include sample problems. Weight and balance  is detailed in Chapter 6, Weight and Balance. The aircraft and systems description section is an excellent  place to study all the systems found on an aircraft. The  manufacturers should describe the systems in a manner that  is understandable to most pilots. For larger, more complex 