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Archive for August, 2008

(Unofficial) Canadian NOTAMs via RSS

Sunday, August 17th, 2008

I have added an experimental, alpha-quality feature to OurAirports: local Canadian Airport NOTAMs via RSS (scraped from the Nav Canada web site). If anyone is interested in trying this out, you need to visit a Canadian airport’s page on the site and add “notams.rss” to the end of the URL, e.g.

http://www.ourairports.com/airports/CYVR/

becomes

http://www.ourairports.com/airports/CYVR/notams.rss

You can subscribe to this RSS 2.0 feed using any standard blog reader,such as Google Reader, filter and mash it up using Yahoo Pipes, etc.

Why it matters

The huge advantage of reading NOTAMs in a blog reader is that your reader remembers which ones you’ve already read. That way, when you plan a flight, you don’t have to reread the 20 NOTAMs you read for your flight three days ago. If a NOTAM has been modified, then it will appear as unread again.

Nav Canada and the FAA should deliver NOTAMs this way automatically, as an cheap, easy way to improve flight safety — it’s too easy to miss one important new NOTAM when reading through 20 old, stale ones for the umteenth time.

Caveats

Please read these — some of them are safety-related.

  • This is just an experiment, not a regular feature: I may either drop it or change the way it works at any time, so it wouldn’t be a good idea to build a production-grade web app that relies on it.

  • Airport NOTAMs only: FIC and HQ NOTAMs are not (yet) included.

  • These NOTAMs are scraped from Nav Canada, so any minor change in the way they format their web pages could break the system completely.

  • These may not be up to date, and some NOTAMs may be missing, so unfortunately, you still have to go to the official source before an actual flight; however, this feed will help you keep up to date from day to day on what’s happening in your area.

  • Larger airports have their own Nav Canada NOTAM files, but smaller airports are collected together into larger files. You’ll see the whole file for each airport, not just the specific airport you requested (that’s a design choice).

OurAirports can geocode (!!)

Friday, August 8th, 2008

Today I overhauled the search system in OurAirports to use Google’s free geocoding service. Geocoding takes an address like “Algonquin Park” or “1600 Pennsylvania Ave, Washington, DC” and converts it to a latitude and longitude — it doesn’t sound like much, but it completely changes the way you can use OurAirports.

Previously, you could search for a town or city in OurAirports only if that city had an airport; for example, you could find Smiths Falls, Ontario, but not Perth, Ontario. With geocoding, OurAirports shows the closest airports to any address, and that’s now the default search mode. You can also filter the search results to show only airports with scheduled airline service, only seaplane bases, etc.

For example, for a commercial air traveler, here are the closest airline airports to the Grand Canyon; for a film-star bush pilot, here are the closest seaplane bases to Hollywood, California.

There’s a lot more information, and many more examples, on the new search help page