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14 votes
Accepted

What is an "Alternate Airway"?

I found an old definition in the All-Weather Flight Manual published by the US Navy in 1957: Alternate Airways Alternate airways are occasionally used for lateral separation when traffic conditions ...
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13 votes
Accepted

Why publish an unusable airway?

Short answer: only part of the airway is unusable, and even then it's usable with GPS. Your image shows V522 between FAILS intersection and the ERI VOR but you have to look at the full airway, which ...
  • 70.5k
11 votes
Accepted

How can a pilot fly a distance of 594 NM connecting two VOR's?

You are correct that VOR's rarely have a range of more than 200 NM. However, Alta Floresta VOR (ATF) is colocated with an NDB (and DME). In spite of less accuracy, NDB's have a much greater range (...
10 votes
Accepted

Do airways with multiple numbers (e.g., J89-101) imply combined segments?

Yes, from your example J34-68-538 are jet routes that share a segment and aircraft on different routes may travel the same segments between waypoints. A complete explanation is in the FAA's ...
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9 votes

What is an "Alternate Airway"?

To add to the information from the other answers to this question: Years ago, prior to the extensive availability of ATC radar, it was not uncommon to use Alternate Airways for IFR enroute lateral ...
  • 20.8k
8 votes
Accepted

Is there a list of all airways?

Airway data is published in each country by their respective regulatory authority. This is published as a part of AIP(Aeronautical Information Publication). This page contains links to some of the ...
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8 votes
Accepted

Why do aircraft fly over land rather than over the Adriatic Sea?

Most air routes in Europe are unchanged since the days before GPS, when they were defined by radials from VOR and NDB radio beacons. As these have a limited range, they could easily be used to define ...
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7 votes
Accepted

Why do RNAV airways exist?

RNAV freed aircraft from the airways that were already in place that may have zig zagged from VOR to VOR, but with the limitations of the ATC system based on human controllers, it is still desirable ...
  • 110k
6 votes

Can a VFR flight follow an IFR route?

Yes. In fact, before GPS came along, if you were flying somewhere and wanted to use your VOR to get from A to B, that's exactly what you did a lot of the time if it was convenient; fly along the ...
  • 110k
6 votes

What is the naming convention for European airways?

ATS routes in Europe are designated just like the rest of the world. ICAO publishes guidelines for the designation of ATS routes in Annex 11, which are adopted by almost all countries. A route will ...
6 votes
Accepted

Where is V15 and how do I find it?

There is a notation for V15 (low altitude IFR airway) in the southern portion of the top map in your question. V15 is a Federal Airway, normally used for IFR operations and shown on IFR charts as ...
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6 votes
Accepted

Are there conventions on which side to travel on Victor airways - USA?

If you are flying IFR the FAA expects you to be on the centerline of the airway, as per the FAA's IFR flying manual to operate an aircraft within controlled airspace under IFR, pilots must ...
  • 96.4k
5 votes
Accepted

What is the difference between a waypoint and a significant point in an airspace?

According to ICAO PANS-ATM (Doc 4444) 16th Edition, Waypoint is a type of significant point. Mentioned in Chapter 1 - Definition as Significant point :- A specified geographical location used in ...
5 votes
Accepted

What is the width of a high altitude airway?

At least in the US airspace definition, High Altitude Airways (Jet Routes) have no defined width regardless of the airway being navaid-based or RNAV/RNP This is briefly stated in the FAA training ...
5 votes
Accepted

What is the difference between en route and airway?

Enroute: An aircraft that is on its way to its destination. Air Route: A specific route that an aircraft takes, just like a car route, taking specific highways and roads to get to your destination. ...
5 votes
Accepted

Is there a list of directs and preferred routes within USA airspace?

In the US, the National Flight Data Center (NFDC) publishes a database of preferred routes. You can query it or download the entire database. Here is the result of entering only BWI to PHX: A ...
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4 votes

Is there a list of all airways?

If it's not for real-world use, navigraph.com publishes a regular database of worldwide airways, navaids, airports, SIDs and STARS, etc.
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4 votes

how to know about designed airways above my house

Airways is a term that is used for the sort of "highways in the sky" that a lot of commercial air traffic use. However, as you are reasonably close to an airport what you're most likely referring to ...
  • 26.4k
3 votes

What are these shaded areas?

It means that no Procedure Turn is required/expected if arriving within the sector defined by the 297 and 020 radials (inclusive) of DBL. The grey bars are a way of denoting the boundaries of the No ...
  • 110k
3 votes

When must airliners follow airways?

Commercial airliners generally fly IFR as such they do what ATC tells them to do. They are not free to chose their own path. The airway system in the USA and elsewhere on the globe stems from the pre-...
  • 96.4k
2 votes

Why do RNAV airways exist?

RNAV airways are there for several reasons: (Speaking as a US controller and instructor) Radar performance. Radar is not everywhere, and neither is ADS-B. Regulations require GNSS aircraft to be ...
  • 1,504
2 votes

Why do RNAV airways exist?

You are partially correct, first of all they are called "RNAV routes" not "RNAV airways" and yes the entire point of RNAV was not needing to fly along a suboptimal preset path but that was because of ...
  • 839
2 votes
Accepted

How would I read a departure chart?

So there's a lot going on in your question to address. First, and most importantly, the info you linked is for ATC, not pilots. you won't get any usable info of how to fly IFR in this airspace. You ...
2 votes

Can a VFR flight follow an IFR route?

For low altitude flights ie below FL180, yes you can. You can use either Victor (VOR) or Tango (RNAV) airways. You will fly at VFR altitudes during cruise, but use of these airways on VFR flights is ...
2 votes

Can you change airways when they cross without a named fix?

Yes one can fly one airway to intercept another. Many reasons exist as to why not all intersecting airways have an intersection, the simplest being, it wasn't necessary. I will suspect one may ...
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1 vote

What do the Airway Letters and the following numbers mean?

RCTP - Taipei, Taiwan Airport AJENT SID - Standard Instrument Departure leading to the Navigation fix named AJENT MKG - fly to the MAGONG VOR Navigation beacon A1 - follow airway A1 ANPOG - until the ...
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