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Land and Hold Short

Archive for March, 2007

The FAA vs. General Aviation

Thursday, March 29th, 2007

[Update: Boing Boing bought into the airlines' side on this and went even further, confusing airport development funds with ATC costs and somehow making it sound like 25% of the cost of each airline ticket subsidizes rich people in bizjets. To their credit, they ran a couple of follow-up corrections from readers. Thanks to Mark for the tip.]

In this speech, U.S. FAA administrator Marion C. Blakey defends a new, fee-based U.S. system on these grounds:

“Tell you what. If the FAA really wanted to kill GA, as our critics claim, we’d just sit back and do nothing. We’d leave the air traffic system just the way it is, and let congestion slowly squeeze them out.”

What pilots know (but the public doesn’t) is that we have procedures for handling every part of a flight without help from air traffic control (ATC), and that thousands of flights every day go from point A to point B without ever talking to an air traffic controller, just like car drivers can manage a four-way stop without the help of a traffic cop. We have rules for departing (landing traffic gets right of way for the runway), rules for enroute (different altitudes for different directions of flight), and rules for arrival (everyone joins a circuit or pattern and takes their turn to land). In the Canadian north, as Aviatrix can attest, we even manage IFR just fine without ATC help.

These rules work great, but they do require that everyone slow down and get in line, and that’s where ATC comes in. Sure, a 737 could slow down to (say) 180 knots, fly a wide pattern, and wait its turn to land, but the airline doesn’t want it to (gas is expensive, and passengers hate being late). When the weather goes down, the airlines don’t want their jets and commuter turboprops stacked 20 deep in a hold following the one-in/one-out rule for uncontrolled airports in IFR. They don’t want to have to slow down to near propeller speed in terminal airspace in VFR so that they can see and avoid other traffic reasonably.

Because of all that, we have a special system in place to help the big guys out. There are controllers at busier airports, terminal controllers, and enroute controllers to help them get in and out of airports faster, without having to get in line and wait (at least, not as much). Huge amounts of airspace are reserved so that only aircraft talking to ATC can use them, again, almost entirely for the benefit of the airlines.

Remember that the sky belongs to everyone, and all this special accommodation for the airlines this is a bit of a pain for us G.A. pilots (long waits for clearances around class B/C or long detours, etc.), but we can get used to it, just like drivers get used to bus lanes. And sometimes (rarely), we even get our own tower at airports with extremely heavy G.A. traffic, just to help things along. It really adds insult to injury, though, when airlines complain that G.A. is not paying its fair share of the cost of this system (even though we already pay a fuel tax on both sides of the border, and a small fee in Canada, to subsidize a system designed largely for the airlines’ benefit), and it’s even worse when organizations like Nav Canada or the FAA start acting as lobbyists for the airlines.

Wednesday afternoon, 1:36 pm, Ottawa/Macdonald-Cartier Airport

Friday, March 16th, 2007

On the way home from Teterboro Airport after a March break family trip to New York City, after 2.6 flying hours mostly in IMC with light to moderate turbulence. My older daughter in the copilot seat whipped out her camera and took this shot on short final on the ILS 32 at Ottawa/Macdonald-Cartier Airport.

We had been racing down the approach at 110 knots to get in ahead of an approaching level 2 cell (though we’d been through a few of those already), and tower turned the lights up to maximum to make sure we wouldn’t have to go missed. The airport was reporting RVR 4000 ft (in other words, you could see less than a mile forward on the runway), but the approach lights were bright enough that I made them out at 800 AGL and started to slow the plane. The runway itself popped into view at 600 AGL, and my daughter took this picture a bit after that.

As ominous as this looks, it would not count as anywhere near a low approach for an ILS. However, it’s worth mentioning that Ottawa was forecasting 3,000 ft ceilings and 5 miles visibility when we left Teterboro.

Assault by battery

Friday, March 9th, 2007

Recently, in the cold weather, my Warrior’s battery has barely managed one try starting the plane — any more, and it goes flat. Most recently, it happened after I’d just been flying 1.7 hours and tried to restart after a short fuel stop. I had to figure out whether the problem was the battery or the alternator (or regulator).

Battery/alternator diagnosis checklist

I phoned my AME, and he gave me a short checklist that I could run myself using only a multimeter (this is for a plane with a 14 volt electrical system and a single battery):

  • With the engine off, a reading at the battery terminals (master off) should give at least 12.5 volts, and a reading at the cigar lighter (master on, radios off) should give at least 11.5 volts.
  • With the engine idling, a reading at the cigar lighter should give 12.5–13 volts.
  • With the engine running at 1500 rpm, a reading at the cigar lighter should give at least 13.5 volts.

Analysis

I left the plane tied down for extra security (in addition to the brakes), and ran the tests. Here’s what I got:

  • Engine off: 12.42 volts at the battery terminals, 11.6 volts at the cigar lighter.
  • 600 rpm: fluctuating 12.7–13.1 volts
  • 1000 rpm: 13.71 volts
  • 1500 rpm: 13.7 volts
  • 2000 rpm: 13.7 volts

After running the engine for a few minutes then shutting down, the battery read 13.03 volts at the terminals, but the charge had dropped to 12.61 only 10 minutes after I shut down the plane, and would presumably keep dropping to around 12.4 again.

Diagnosis

My alternator is obviously producing full power even at only 1000 rpm, and the regulator is kicking in to cap it at 13.7 volts. There’s no reason that battery shouldn’t be charged; however, 12.4 volts is fairly low, and more disturbingly, after only one start attempt, the battery drops to 12 volts and can no longer turn the propeller.

I think I’m facing a bad combination of cold weather and a weak battery. I’ve decided to replace my wet cell with a newer, high-cranking-power sealed battery, but I need to wait for a new battery box cover to arrive from Concorde; in the meantime, I’m using a loaner wet Gill battery for an upcoming New York City trip. If you see someone carrying a dead battery into the FBO to be charged while his family waits impatiently in the plane, it’s probably me.

Canadian aviation publication make-over

Thursday, March 8th, 2007

My 15 March (2007) editions of the Canada Flight Supplement (airport directory) and Canada Air Pilot (approach plates) just arrived in the mail, and they have a new look. Just before I started flying in 2002, the CFS had a green cover (I saw old copies lying around), then it switched to blue. Now we’re going to have to get used to grey with fancy gradients.

More seriously, Nav Canada sent a letter along with the new pubs promising significant changes beyond just the cover colours. I wonder what they have in store for us. Up-to-date information about landing fees? Better diagrams for airports without instrument approaches? We’ll have to see.