High Altitude Airways are generally for use above 18,000 (class A airspace) while Low Altitude Airways are used below 18,000. Since they are primarily for IFR use. The HHA (High) charts don't provide much terrain detail unlike sectionals. Their primary purpose is to show the airway info. Each Airway has a designation (like a highway number) and the charts will show the appropriate VOR radials and distances for the Airways.
The layout is basically the same. This is because pilots from all over the world need to interact with Departure and Arrivals chart instruction and routes plus airport requirements.
VFR or Visual Flight Rules means you generally have good visibility and are in a certain range of altitudes. You basically fly using what you see (and of course navaids and charts). IFR or Instrument Flight Rules are used at certain altitudes, with certain types of aircraft and under certain kinds of visibility. Under IFR, you fly by using navaids, charts and instruments. Oftentimes you'll have zero visibility but IFR lets you fly in these assuming you're IFR certified.
IFR stands for International Financial Reporting.
During IFR flight, ATC will dictate cruising altitude.
Issued For Review
Any pilot (PIC) wishing to operate under IFR at Sion shall be trained and qualified for the local IFR Procedures with an aircraft able to operate on the IGS Steep Approach (initial 6 degree glide path
There was a lack of funding, and alot of near misses between pilots in IFR conditions
Initial Fire Response
The VFR hold line is the line on the taxi way which vehicles are not allowed to cross without permission from ATC during VFR weather conditions. The IFR hold line serves the same purposes but during IFR weather. In most places there will simply be a "hold line" which serves as the hold line during both VFR and IFR conditions.... but in situations where an aircraft waiting at the hold line may interfere with ground-based radio signals (such as an ILS approach signal) an IFR hold line may be positioned farther back from the runway to reduce this risk.
Pilots use many different types of maps (called charts in pilot-speak); I will try to go over as many as I can. The first type of chart is the sectional chart. This shows airports, navaids, airways, etc. as well as detailed terrain. These are used mainly by pilots who are flying visually. Similar charts are World Aeronautical Charts(shows a larger area), and Terminal Area Charts(smaller area). The other main type of chart a pilot will use is and IFR (Instrument Flight Rules) Enroute chart. This shows airports, navaids, airways, etc, but does not include any terrain. These are used by pilots flying by instruments. IFR charts are divided into High(>18000') and Low(<18000') altitude. If you would like to view any charts to see what they look like, go to www.skyvector.com. On the top right side of the screen, you can select which chart you want to view. If a chart just has a city name like New York, it is a sectional chart. Other charts are labeled like one of the following examples: Enroute L-33, enroute H-12, cf-19 WAC, Boston TAC, etc.
Consider the navigation tutorials. They cover IFR (instrument flight rules) and vfr (visual flight rules). Youll learn about reading charts, setting way points in the gps , setting your afd radio, using NDB,s. Vor etc
Use IFR plan or your visual flight rules