Google Maps Flight-Planning Demo

Screenshot of the Google Maps demo.

I’ve thrown together a quick demo of several segments (almost 400 miles worth) of the V316 low-level airway westbound from the Ottawa VORTAC to the Sault Ste. Marie VOR/DME. The best part, in my opinion, is the ability to switch to a satellite view and then zoom in on different parts of the route — for example, switch to satellite, zoom in on the Killaloe VOR, and you will be able to see the abandoned airfield beside the VOR.

There is no server-side code involved in this demo: everything happens inside your browser (as a result, it won’t work without a fairly new browser). The demo consists of a simple HTML page, a few lines of JavaScript, and a short CSS stylesheet.

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Fogged in without an ILS

[Update at bottom.]

Halifax airport is fogged in, all ops are shut down, and hundreds of flights are cancelled, stranding people all over the place. After reading the CBC story, I decided to pull up the notams for CYHZ. They include the following:

050422 CYHZ HALIFAX INTL
  CYHZ ILS GP 24 U/S
0506270900 TIL 0507172100

050423 CYHZ HALIFAX INTL
  CYHZ LLZ 06 U/S
0506270900 TIL 0507172100

050424 CYHZ HALIFAX INTL
  CYHZ RWY 15/33 CLOSED
0506270900 TIL 0507172100

050425 CYHZ HALIFAX INTL
  CYHZ ILS 15 U/S
0506270900 TIL 0507172100

050430 CYHZ HALIFAX INTL
  CYHZ DME CH28 U/S
TIL 0507172100

Halifax has two runway surfaces. 15/33 is closed for construction until July 17, but then, for reasons unknown (cranes?), the ILS 24 is also offline, as is the LOC(BC) 06. The Halifax International Airport Authority said that “it was simply bad timing that the fog rolled in while the system was down.” I had to laugh when I read that — fog in Halifax is about as much of a surprise as, say, drizzle in Vancouver or Seattle. There had to be a lot of wishful thinking involved if people thought that a busy international airport in one of Canada’s foggiest cities (it doesn’t have a CAT II approach for just for kicks) could somehow function for three weeks with only GPS overlay and NDB approaches.

Update

In a posting written about the same time as mine, Michael Oxner (a Moncton Centre controller) mentions — as I should have noticed with a more careful reading of the NOTAMs — that one localizer is also still active at CYHZ. He also points out, though, that Halifax’s Cat II ILS approach (one that lets specially-equipped planes with specially-trained crews land with a ceiling below 200 feet) is the only one in the Maritimes, so this is a problem that extends well beyond Halifax itself.

With the LOC-only approach to CYHZ rwy 24, the MDA is still 310 feet with a requirement for a full mile visibility (that probably counts as a sunny day in Halifax), and that’s assuming that winds allow a straight-in approach to 24; otherwise, the NDB rwy 06 approach (or GPS overlay) will require almost a 500 foot ceiling and 1.5 miles visibility. With two more weeks to go, it’s a safe bet that we’re going to see more news stories about problems in Halifax.

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Google Maps and Flight Planning

Google has just made an announcement that could have a profound effect on the resources available for flight planning online: they have created a free API (application programming interface) to Google Maps.

The flying geeks who read this blog will understand the implications of this immediately; for the rest of you, it means that any web site (any free one, anyway) can now reliably build web applications integrating Google’s maps and satellite photos. Do you want to see a scrollable, zoomable satellite photo of British Columbia with victor airways overlaid? See an outline of the newest TFR on top of a detailed street map of New York? Web site designers with only the most basic LAMP and Javascript skills can now deliver sites that do that with days or weeks, rather than months or years of work, and people with advanced skills — Paul Tomblin knows I’m talking about him — will be able to do much, much more. With wireless Internet in the cockpit, we could even have live Google maps with weather overlays on a tablet PC in the our cockpits, and laugh at glass-cockpit pilots for their primitive technology.

Seriously, expect to see some interesting aviation-related applications appear in the next few months. I’ll link to them from my blog if I hear about them.

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C-FBJO on Google Maps

This is a pure vanity posting, a link to a Google Maps satellite photo of my plane in its usual parking spot at the Ottawa Flying Club (at CYOW):

satellite photo

I can date the imagery to within a few months because of a building under construction elsewhere in the city. Since it might be hard to make out call signs in the photo, I’ve included a visual aid for finding the plane:

Satellite imagery of C-FBJO at CYOW.

You can see that C-FBJO is a low-wing plane from the continuous shadow along the top of the fuselage. The plane parked behind it is a Beech Duchess, C-GJFE, used for multi-engine training at the Ottawa Flying Club (you can just make out the T-tail in the photo); the plane parked beside it is, I think, a privately-owned Beech Baron C-GGGX, but that’s not its usual spot.

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Canadian Airport Data in a Spreadsheet

As I’ve mentioned before, I’m often frustrated at the lack of freely-available data for Canadian airports and airspace (and stung by the irony that most of what is available comes from the U.S.). Over the past couple of years, I’ve repeatedly started trying to put data for all airports in the Canada Flight Supplement (CFS) into an XML file or spreadsheet, but have always either given up or ran out of time before the next CFS cycle came out.

As a result, I am happy to report that someone else has succeeded where I failed. George Plews, of North Battleford SK, has managed to get all of the airports, ICAO identifiers, latitudes, and longitudes from the CFS into an excel spreadsheet, and also has it available for viewing on the web on his page Airports in Canada, together with lots of totals and statistics (for example, Ontario has 218 airports, while PEI has 4). Give his page a visit or grab the spreadsheet. Maybe the rest of us can find a way to contribute to make the spreadsheet more useful; at very least, people could commit to scanning part of the CFS each cycle for change bars, so that George can keep is spreadsheet up to date without redoing the whole thing. It would also be nice to add altitudes for the airports. Then there’s the runway data …

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North (sort-of) without radar

I flew back from Timmins yesterday after a Hope Air flight via Toronto (Timmins is the home of singer Shania Twain, as the signs there constantly remind you). The airspace around Timmins is controlled, but there is little or no radar coverage below 10,000 feet and just an FSS on the field — that means that Toronto Centre has to sequence IFR arrivals and departures based on position reports, the old-fashioned way, and both Wednesday and Thursday were IFR days. On the way in there were four of us with very different speeds (me, a piston twin, a helicopter, and a turboprop) scheduled to arrive at the airport within a few minutes of each other, so ATC had me giving position reports every 10 DME: clearing me for an approach too early would close off the airport to everyone else until the FSS reported me on the ground, since no radar means one in/one out.

On the way out, I took off just before a Dash-8 heading for Toronto. We were flying south on different airways (by 20 degrees), but the protected airspace initially overlapped. That meant that the Dash-8 had to stay 1,000 feet below me to maintain safe separation — when I reported 4,000 ft, the Dash-8 was cleared to 3,000; when I reported 6,000, the Dash-8 was cleared to 5,000; and so on. Fortunately, I was alone in the plane and climbing at 700-800 fpm; a fully-loaded Warrior is lucky to see 200-300 fpm above 5,000 feet, and often goes negative when it hits a downdraft. Finally, the airways diverged far enough that the protected areas no longer overlapped, and the Dash-8 was cleared to climb quickly into the oxygen altitudes and then fly GPS-direct towards Toronto. I applaud the crew for their patience climbing underneath me at Cherokee speed. ATC picked them up on radar climbing through 11,000 feet, and I levelled out at 9,000, still hand flying in IMC, and making position reports until I was half way to North Bay and finally showed up on Centre radar.

(Update: Michael Oxner, an air traffic controller in Moncton, has posted about exactly how this kind ofVOR/DME, non-radar separation works.)

Timmins is at 48° latitude — south of the 49th parallel that forms much of the Canada/US border, and only slightly north of Seattle — but in Ontario, that counts as pretty far north. Once you pass Sudbury, the population density drops so dramatically that every single building (such as a cabin) is depicted on the aviation charts, and there are surprisingly few of them. Not far beyond Timmins, the roads stop completely, and most communities are accessible only by plane. In the end, I think, the idea of north in Canada has more to do with population density and accessibility that it does with latitude, and while Timmins itself is a perfectly normal small city with a nice downtown, malls and fast food chains, you get the impression that you’re sitting right on the edge of something huge and completely different stretching thousands of kilometers beyond you.

In fact, one distinguishing feature of north in Canada is how important (and ordinary) general aviation is in day-to-day life. Along a river just outside of town, every third or fourth dock had a floatplane tied to it (they’re probably all on skis in the winter). One house had, not a rusty pickup truck, but a Piper Cub sitting in the yard (does he take off from the dirt lane out back?). Everyone who doesn’t fly has a boss or friend who does, and non-pilots seem quite comfortable talking about things like instrument ratings. Toronto is 13 hours away by train, probably 10 hours by car (I haven’t checked), but only 2:30-3:30 in my Warrior (depending on winds) and probably 2 hours or less in a high-performance single or twin. Many of the nearby communities have no roads or railroads at all, and a round-trip ticket for a very short scheduled flight to one of those communities is at least $900. As a result, even small business people like insurance brokers and real estate agents find that it makes enormous business sense to learn to fly and buy a small plane.

People who spend time in Edmonton, Yellowknife, or Iqaluit can laugh when I call Timmins “north”, but what it lacks in latitude it seems to make up in attitude.

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"Cleared for an approach"

Last week I decided to go for a short round-robin IFR flight between Ottawa and Pembroke. While I was still in cloud and on the airway, cruising at 6,000 ft, Montreal Centre gave me missed approach instructions and then said

Bravo Juliet Oscar, cleared for an approach to the Pembroke Airport.

That kind of a clearance can sometimes be disconcerting for people (like me) who are used to doing vectored approaches to busy airports with every turn and altitude change micromanaged by ATC. There’s a whole lot that Centre expected me to remember to do after giving me the clearance:

  1. read back the full approach clearance, for the tapes
  2. select an approach (in this case, there was only one)
  3. turn off the airway and self-navigate towards the initial approach fix (IAF), which, in this case, was an NDB 21 nautical miles away
  4. begin descending from cruise altitude to minimum safe altitude (MSA)
  5. fly the approach and missed

The fourth one might trip up American pilots, especially if they get the clearance a long way from the airport. In Canada, clearance for an approach automatically includes clearance to descend to the minimum charted IFR altitude, which is most typically the 25 nautical mile MSA around the initial approach fix (but may procedure turn altitude on a vectored approach, or a published transition altitude, or even 100 nautical mile safe altitude if you get the clearance a long way back). In the U.S., the MSA is for emergency use, and clearance for an approach does not include clearance to descend before established on the approach, as far as I understand.

In other words, in Canada, MSA is an operational altitude, like the procedure turn altitude, a step-down altitude, the minimum descent altitude (MDA) or the decision height (DH); in the U.S., it’s just a safety advisory.

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Admin: new category, Canada vs. U.S.

I’m starting a new category in this weblog, canada-us. Postings added to this category will talk about how flying differs between the two countries, including regulations, culture, and so on. Vive la différence!

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Flying databases

The U.S. makes most of its aeronautical data available for free in electronic form; other countries hoard the information and charge money (sometimes, a lot of money) for a peek at it. This distinction used to matter mainly to cartographers working with giant mainframe computers, but now that almost everyone flies with a GPS (handheld or panel-mount) our airplanes have become flying databases and they’re getting hungry for information, preferably information that’s free (as in speech).

There are two projects currently underway that will not help to feed our GPS’s directly, but will, at least, give pilots a chance to share more information with each other. First, the Wikipedia has a large number of airport articles underway, and anyone can contribute to any of the articles (or start a new one). The best place to start is the Airports category, which has a top-level entry for each country, and then drill down. Coverage is uneven, representing the interests of the people who happen to have contributed so far — for example, there are currently only 7 airports listed for New Jersey, but 22 airports listed for Nunavut — and many of the airport articles are short stubs, but those are problems that more contributors can easily fix. Please go over and add information (and pictures) for airports that you know well, or start new articles. Since most of Wikipedia’s readers are not pilots, this is a great chance to educate the public about general aviation.

Another new collaborative resource is the COPA Places to Fly directory. Unlike the freeform Wikipedia, the COPA directory is set up to be highly structured, closely mimicking the layout of the Canada Flight Supplement, and its audience is clearly pilots. There’s not much there yet, but it holds the promise of some day providing a free electronic replacement for the CFS, assuming that there’s some way to export it to portable devices, and that people find some way of ensuring data quality in a collaborative environment (i.e. some kind of peer review and reputation management).

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The DC ADIZ

This time, it was a Canadian plane’s turn to violate the DC ADIZ, the enormous restricted airspace around Washington, DC (the plane did not go anywhere near the White House or Capitol). In fact, planes violate the ADIZ all the time, usually without news coverage.

I wonder if all of this hassle for pilots, air traffic control, the military, and ordinary U.S. citizens brings any public safety benefits. It’s telling that New York City, which suffered more than Washington in the September 11 attacks, has almost completely reopened its airspace and does not require any special codes or preclearance (you can fly VFR right into Teterboro, for example, without filing a flight plan or talking to any ATC unit but Teterboro tower). Private planes are even allowed back into the Hudson River VFR corridor, where they can fly at 500 feet MSL between Manhattan and New Jersey, looking into the windows of skyscrapers moving past the wing.

In Ottawa, our nation’s capital, we briefly had a no-fly zone over most of the city core (including Parliament Hill and Rideau Hall) up to 3,000 ft MSL after the September 11 attacks, but that has been scaled back so far now that you’d actually have to be buzzing the Peace Tower to get busted. The airspace restrictions during President Bush’s visit last fall gave us a brief taste of what life must be like for pilots in some parts of the U.S., and I can confirm that the flavour was pretty bitter.

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