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ACRO E-mail Archive Thread: [Acro] Re: Aerobatics Now Illegal In Canada

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ACRO E-mail Archive Thread: [Acro] Re: Aerobatics Now Illegal In Canada


Thread: [Acro] Re: Aerobatics Now Illegal In Canada

Message: [Acro] Re: Aerobatics Now Illegal In Canada

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From: "Ron Spencer" <splitimagewing at>

Date: Sat, 06 Apr 2002 14:18:03 UTC


  Interesting logic!...however, regardless of the "viz from the forward
cockpit", it should be noted that "flight visibility" according to ICAO is
clearly defined to mean in the horizontal plane only...with the only other
visibility direction being in the vertical ...and that would be referred to
as ceiling.

Hope this posting keeps acro alive in Canada...  The least I could do for
our Canuck cousins!


----- Original Message -----
From: "Andrew Boyd" <aboyd at>
To: "IAC Acro List" <acro at>
Cc: <aboyd at>
Sent: Friday, April 05, 2002 10:03 PM
Subject: [Acro] Aerobatics Now Illegal In Canada

> According to Canadian Aviation Regulation (CAR) 602.27(c) flight
> visibility of 3 miles is required to perform an aerobatic maneuver in
> Canada.  Ok.
> According to CAR 101.01(1) Flight Visibility is defined as "the visibility
> forward from the cockpit of an aircraft in flight".  Sure.
> So far, so good.
> However, I have in my possession a statement by a Transport Canada
> (think Canadian FAA) Enforcement Supervisor that this 3 miles flight
> visibility
> out the front cockpit must be available DURING EVERY INSTANT of an
> aerobatic maneuver.
> Let's think about the implications of this for a moment.  If we commence
> vertical aerobatic maneuver - say, a loop - at the minimum altitude
> specified
> by CAR 602.27(d) - 2,000 AGL - then if our loop has a diameter of 1,000
> then when we are 2,500 AGL we can reasonably expect to be vertical,
> straight up.
> At this instant, according to Transport Canada Enforcement, we still need
> 3 miles flight visibility.  This means no cloud ceiling less than 3 miles
> 18,000 feet directly above us.
> So, to perform a loop in Canada, you now need a cloud ceiling of at least
> 2,500 + 18,000 = 20,500 AGL.
> Passing through the inverted, life is good.  We have 3 miles flight
> visibility
> horizontally.
> However, things get sticky on the vertical downline of our nice round
> At 2,500 AGL we can logically be expected to be pointed straight down
> at the ground.
> Oops.  Transport Canada Aviation Enforcement wants us to have 3 miles
> flight visibility at this instant, too, and we only have 2.500 feet (to
> ground)
> or less than 1/2 mile.  That's IFR, according to Transport Canada Aviation
> Enforcement.
> So, on the vertical downline, we need to have 18,000 feet between us and
> the ground.  This means that we must now commence a loop in Canada at
> no lower than 17,500 AGL.
> Oops.  If we start a loop at 17,500 AGL we now need to have a cloud
> of no less than 36,000 AGL.
> Of course, we will also need oxygen for the pilot, and a turbocharger for
> the
> engine, and a waiver for the class A airspace that we will be in, VFR
> performing
> aerobatics to keep Transport Canada Aviation Enforcement happy.
> The above being perhaps theoretically possible, but practically unlikely,
> aerobatics - at least, aerobatics involving vertical lines - are now
> effectively
> illegal in Canada, unless you wish to run afoul of Transport Canada
> Enforcement, which is really not a good idea.
> Looking on the bright side, I guess you can still do a steep turn with
> than
> 60 degrees of bank, though.
> --
> aboyd at   ATP


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