Figure 14-2.  Preferred Entry-Crossing Midfield.  Figure 14-3.  Alternate Midfield Entry.  faa.gov/air_traffic/flight_info/aeronav.  Figure 14-4  contains  an excerpt from a directory. For a complete listing  of information provided in a Chart Supplement U.S.  and how the information may be decoded, refer to the  “Legend Sample” located in the front of each Chart  Supplement U.S.  In addition to airport information, each Chart Supplement  U.S. contains information such as special notices, Federal  Aviation Administration (FAA) and National Weather  Service (NWS) telephone numbers, preferred instrument  flight rules (IFR) routing, visual flight rules (VFR) waypoints,  a listing of very high frequency (VHF) omnidirectional range  (VOR) receiver checkpoints, aeronautical chart bulletins, land  and hold short operations (LAHSO) for selected airports,  airport diagrams for selected towered airports, en route  flight advisory service (EFAS) outlets, parachute jumping  areas, and facility telephone numbers. It is beneficial  to review a Chart Supplement U.S. to become familiar  with the information it contains.  Time-critical aeronautical information, which is of a temporary  nature or not sufficiently known in advance to permit  publication, on aeronautical charts or in other operational  Figure 14-4.  Chart Supplement U.S. (formerly Airport/Facility Directory excerpt.  14-4  Notices to Airmen (NOTAM)  Pattern altitude  +500 feet  Descend to  pattern altitude,  then turn  Yield to  downwind  traffic and  enter  midfield  downwind  at 45°  1  3  4  Fly clear of  traffic pattern  (approx. 2 mi.)  2  Yield to the preferred 45° and downwind  traffic, then turn downwind  Pattern altitude 