Registration Marks - Whats the law?

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Registration Marks - Whats the law?

Postby Gyronaut » Wed May 13, 2009 11:43 am

I heard that some gyro's in Gauteng were grounded recently due to inadequate registration marks. (**)

This probably follows on from a low-flying incident discussed elsewhere so lets not go there.

What I would like to know from the knowledgeable people, what does the law state with regard to registration marks? Is there a minimum size? a specified location?
I would like to establish if my machine complies before it possibly gets grounded also.

Len
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Re: Registration Marks - Whats the law?

Postby Wargames » Wed May 13, 2009 1:32 pm

Hi Len,
http://www.caa.co.za
goto acts and regulations -> volume 3(CATS) -> SA-CATS-ARM Aricraft registration and markings (18Mb)

In short:

Markings must be made by solid lines and with a contrasting colour to aircraft colour.

6.7 The marks on a rotorcraft which is a gyrocopter must appear on both sides of the vertical surface

Thats about it.

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Re: Registration Marks - Whats the law?

Postby Learjet » Wed May 13, 2009 2:15 pm

47.00.3 REQUIREMENT FOR AIRCRAFT MARKING

1. Definitions

Any word or expression to which a meaning has been assigned in the Aviation

Act, 1962, and the Civil Aviation Regulations, 1997, bears, when used in this

publication, the same meaning unless the context indicates otherwise, and –

“approved” means approved by the Commissioner;

“fireproof material” means a material capable of withstanding heat as well as or

better than steel when the dimensions in both cases are appropriate for the

specific purpose;

“heavier-than-air aircraft” means any aircraft deriving its lift in flight mainly from

aerodynamic forces;

“lighter-than-air aircraft” means any aircraft supported mainly by its buoyancy

in the air.

2. Allocation of marks

South African nationality marks are the capital letters ZS, ZT and ZU and the

registration mark is a group consisting of three letters appearing after and

separated from the nationality marks by a hyphen, for example, ZS-AAA.

3. Identification plate

(1) Every South African registered aircraft must have affrixed to it an identification

plate stamped or engraved with its nationality and registration

marks.

(2) The identification plate must be –

(a) made of fireproof metal or other fireproof material of suitable physical

properties; and

(b) affixed to the aircraft in a prominent position near the main point of entrance

to the aircraft.

4. Display of marks

(1) The nationality and registration marks must be –

(a) painted on the aircraft or affixed by any other approved means ensuring

a similar degree of permanence;

(b) legible;

(c) displayed to the best possible advantage having regard to the construction

or features of the aircraft; and

(d) kept clean and visible at all times.

(2) The letters and hyphen must be formed by solid lines and must be of a

colour which contrasts clearly with the background on which they are

painted.

CIVIL AVIATION TECHNICAL STANDARDS

Issue 1 ARM–8 CATS

5. Location of marks: Lighter-than-air aircraft

5.1 Airships

The marks on an airship must appear –

(1) lengthwise on each side of the hull near the maximum cross section of the

airship and on the upper surface on the line of symmetry; or

(2) on the following stabilisers:

(a) the horizontal stabiliser on the right half of the upper surface and on

the left half of the lower surface with the tops of the letters towards the

leading edge;

(b) the vertical stabiliser on each side of the bottom half stabiliser, with the

letters placed horizontally.

5.2 Spherical balloons

The marks on a spherical balloon must appear in two places diametrically

opposite and be located near the maximum horizontal circumference of the

balloon.

5.3 Non-spherical balloons

The marks on a non-spherical balloon must appear on each side of the balloon

and must be located near the maximum cross-section of the balloon immediately

above –

(1) the rigging band; or

(2) the point of attachment,

of the basket’s suspension cables.

5.4 All lighter-than-air aircraft

The side marks on all lighter-than-air aircraft must be visible both from the sides

and from the ground.

6. Location of marks: Heavier-than-air aircraft

(1) The marks on aeroplanes and gliders must appear –

(a) except as provided in subparagraph (4), once, on the lower left surface

of the wing structure; and

(b) on both sides of the fuselage between the wings and tail surfaces, or

on the upper halves of the vertical tail surfaces.

(2) If the marks are confined to the outer half of the wing structure, they

must be located on the left lower surface.

(3) The tops of the letters must be towards the leading edge of the wing

and as far as possible, be equidistant from the leading and trailing

edges of the wing.

(4) Marks on a single vertical tail surface must appear on both sides of the

tail surface.

AIRCRAFT REGISTRATION AND MARKING

CATS ARM–9 Issue 1

(5) Marks on multi-vertical tail surfaces must appear on the outboard sides of

the outer surfaces.

(6) The marks on a rotorcraft (other than a rotorcraft which is a gyrocopter)

must appear –

(a) on the bottom surface of the fuselage or cabin with the top of the marks

towards the front side of the fuselage; and

(b) on both sides of the fuselage or cabin or tailboom in a prominent place

not obstructed in normal use.

(7) The marks on a rotorcraft which is a gyrocopter must appear on both sides

of a vertical surface.

(8) Marks on multi-vertical surfaces must appear on the outboard sides of the

outer surfaces.

(9) If a heavier-than-air aircraft does not possess parts corresponding to those

mentioned in the appropriate subparagraph of this paragraph, the marks

must appear in such a manner that the aircraft can be readily identified.

7. Specification of marks

(1) The nationality and registration marks must consist of capital letters in

Roman characters without ornamentation.

(2) The width of each letter (except letter “I”) and the length of the hyphen

must be two-thirds of the height of the letter.

(3) Each letter must be separated from the letter which immediately precedes

or follows it by a space equal to one-third the height of the individual letters,

the hyphen being regarded as a letter for this purpose.

(4) The lines forming the letters and hyphen must be solid and the thickness of

those lines must be one-sixth of the height of the letter.

8. Measurement of marks

(1) The nationality and registration marks must be formed of letters of equal

height, and must be so situated as to leave a margin of at least 50 mm

along each edge of any surface to which they are affixed.

(2) The height of the marks on lighter-than-air aircraft must not be less than

500 mm.

(3) The height of the marks on aeroplanes and gliders must be –

(a) on the wings, not less than 500 mm; and

(b) on the fuselage or equivalent structure and on the vertical surfaces, not

less than 300 mm, except that where the surface is not large enough to

accommodate full-size marks the Commissioner may approve marks

of a lesser measurement provided they are not less than 150 mm in

height and can be readily identified.

(4) The height of the marks on rotorcraft must be –

(a) on the bottom surface of the fuselage or cabin, not less than 500 mm

high; and

(b) on the sides of the fuselage or cabin, not less than 250 mm high,

except that where the surface is not large enough for full-size marks

CIVIL AVIATION TECHNICAL STANDARDS

Issue 1 ARM–10 CATS

the Commissioner may approve marks of a lesser measurement

provided they are not less than 150 mm in height and can be readily

identified.

(5) If an aeroplane or glider does not possess parts corresponding to those

mentioned in the appropriate subparagraph of this paragraph, the marks

must appear in such a manner that the aircraft can be readily identified.

9. Break-in-area markings on aircraft

(1) If areas of the fuselage suitable for break-in by rescue crews in an emergency

are marked on an aircraft, such areas must be marked as per

Figure 1.

(2) The colour of the markings must be red or yellow, and, if necessary, they

must be outlined in white to contrast with the background.

(3) If the corner markings are more than 2 m apart, intermediate lines of 90

mm x 3 mm must be inserted so that there is not more that 2 m between

adjacent marks.
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Re: Registration Marks - Whats the law?

Postby Gyronaut » Wed May 13, 2009 2:41 pm

Thanks Learjet and Wargames.

As I see it then this applies...

(7) The marks on a rotorcraft which is a gyrocopter must appear on both sides of a vertical surface.

(8) (4) The height of the marks on rotorcraft must be –

(a) on the bottom surface of the fuselage or cabin, not less than 500 mm

high; and

(b) on the sides of the fuselage or cabin, not less than 250 mm high,

except that where the surface is not large enough for full-size marks


Agreed?

This means they can insist on it being on either side of the cabin at minimum 250mm high and underneath at 500mm high. Does it then have to be on the vertical surface (tail) as well?
Its not clear to me whether its either/or?

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Re: Registration Marks - Whats the law?

Postby Wargames » Wed May 13, 2009 3:43 pm

(6) The marks on a rotorcraft (other than a rotorcraft which is a gyrocopter)

must appear –

(a) on the bottom surface of the fuselage or cabin with the top of the marks

towards the front side of the fuselage; and

(b) on both sides of the fuselage or cabin or tailboom in a prominent place

not obstructed in normal use.
Dont agree.
I think a gyro only needs to comply with no 7. A heli must have markings on the belly, not you guys. What tattoo do you have in mind, Len?? Maybe you should ask caa. This can be confusing.
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Re: Registration Marks - Whats the law?

Postby Learjet » Wed May 13, 2009 3:53 pm

Len, as I read it:
(7) The marks on a rotorcraft which is a gyrocopter must appear on both sides

of a vertical surface.

(8) Marks on multi-vertical surfaces must appear on the outboard sides of the

outer surfaces.
As I see it, the above is all that relates to a gyrocopter. (no cabin or underside marking etc provided that "except that where the surface is not large enough for full-size marks") My understanding (needs confirmation) is that in instances where the outboard sides of the vertical surfaces are too small to allow the prescribed lettering size, the manufacturer may apply for permission for the reg lettering to be modified in size to fit. When I recently changed my reg the CAA asked for a photo of the gyro with the new reg displayed (on the outside stabs) which they seemd quite happy with.
Last edited by Learjet on Wed May 13, 2009 4:20 pm, edited 1 time in total.
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Re: Registration Marks - Whats the law?

Postby Wargames » Wed May 13, 2009 3:54 pm

Learjet wrote:Len, as I read it:
(7) The marks on a rotorcraft which is a gyrocopter must appear on both sides

of a vertical surface.

(8) Marks on multi-vertical surfaces must appear on the outboard sides of the

outer surfaces.
As I see it, the above is all that relates to a gyrocopter. (no cabin or underside marking etc provided that "except that where the surface is not large enough for full-size marks") My understanding (needs confirmation) is that in instances where the outboard sides of the vertical surfaces are too small to allow the presceriped lettering size, the manufacturer may apply for permission for the reg lettering to be modified in size to fit. When I recently changed my reg the CAA asked for a photo of the gyro with the new reg displayed (on the outside stabs) which they seemd quite happy with.
I agree!! ## ##
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Re: Registration Marks - Whats the law?

Postby Gyronaut » Wed May 13, 2009 4:57 pm

I hear you and initially that was also my interpretation. While I agree with you, we have to consider this however... "The height of the marks on rotorcraft must be –" can be construed to INCLUDE gyroplanes. This is open to interpretation but in the strictest sense, a gyroplane IS a rotorcraft and therefore must comply to 8 (4) also.

What will the CAA inspector decide at the field?

Dave, your pics (and mine) were sent prior to someone pissing-off the CAA person at the side of the Dronkwordspruit dam and he couldnt make out the registrations of the guilty machines. We've been warned and now it seems to be happening.

##
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Re: Registration Marks - Whats the law?

Postby Wargames » Wed May 13, 2009 6:16 pm

Image
Hi Len,

On above you will see that they distinguise between (7) rotorcraft which include gyros, and (6) rotorcraft which does not include gyros.

Hope this is conclusive. You need them only on the sides.

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Re: Registration Marks - Whats the law?

Postby Learjet » Wed May 13, 2009 7:33 pm

Dave, your pics (and mine) were sent prior to someone pissing-off the CAA person at the side of the Dronkwordspruit dam and he couldnt make out the registrations of the guilty machines. We've been warned and now it seems to be happening.
Pissed off or not, the regulations seem pretty clear to me. Perhaps we should get clarification about the gyros that were grounded and establish exactly what markings they had (or didn't have)?
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Re: Registration Marks - Whats the law?

Postby mikemat » Wed May 13, 2009 8:11 pm

If you guys pay me enough, I will give you a well researched legal opinion on the subject designed to ensure that you never upset the powers that be...... and maintain the beauty and integrity of your aircraft in the bargain...... AND stay in the air.
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Re: Registration Marks - Whats the law?

Postby Wargames » Wed May 13, 2009 8:35 pm

mikemat wrote:If you guys pay me enough, I will give you a well researched legal opinion on the subject designed to ensure that you never upset the powers that be...... and maintain the beauty and integrity of your aircraft in the bargain...... AND stay in the air.
What do you want to do when its already done?? ## ##
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Re: Registration Marks - Whats the law?

Postby Gyronaut » Wed May 13, 2009 9:04 pm

mikemat wrote:If you guys pay me enough, I will give you a well researched legal opinion on the subject designed to ensure that you never upset the powers that be......
If you pay me enough I won't hide a snoek head in your machine which as you know is parked right next to mine. vhpy
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Re: Registration Marks - Whats the law?

Postby mikemat » Thu May 14, 2009 8:15 am

I have seen a registration on either side of the keel of a gyro and assume that the lettering meets the minimum specs, so I suppose that's an option, being a vertical surface.
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Re: Registration Marks - Whats the law?

Postby Condor » Mon May 18, 2009 1:58 pm

I am not going to try and give my interpretation of the law.

SAGPA is in negotiations with CAA and we will report back when an agreement was reached.
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