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View topic - SSDR rules | Light Aircraft Association

SSDR rules

For discussion on all aspects of the Single Seat De-Regulated, sub 115kg microlight aircraft category.


Moderator: John Dean

SSDR rules

Postby Ian Melville » Sun Nov 14, 2010 12:07 pm

Having just wasted a few minutes looking for the latest rules, only to find them on our own site. Googling SSDR was a waste of time, had to use the full name. To save anyone else searching.

A summary
Empty Weight must not exceed 115kg
Max gross weight 300kg, 330kg if it's water based
Wing loading must be lower than 10kg sq/m
Stall speed less than 35kts CAS (this is not in the CAA document!!)
CAA reg displayed
3rd party insurance

Link to the full details are here http://www.lightaircraftassociation.co. ... lights.pdf

Link to CAA ORS
http://www.caa.co.uk/docs/33/ORS4_805.pdf
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Postby A Bleese » Sun Nov 14, 2010 6:03 pm

And, if you're looking at stuff in pounds, I think that works out to 2.04 lb/ft2, but I'm happy to be corrected.
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SSDR Regs

Postby tom@covehouse.demon.co.uk » Wed Nov 17, 2010 11:57 pm

The 35kt stall speed and max 300kg are for all single seat microlights. The max empty weight of 115kg is virtually identical to the US ultralight class. The wing area must therefore be more than 11.5sq.m or just under 124sq.ft.

If you look on the BMAA website they have (strangely enough) a less up-to-date technical note on SSDR's which also states the requirement for a noise certificate, but this now seems to have been dropped.

In addition, you need to have the aircraft registration on a brass plate on the aircraft.
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Postby Ian Melville » Thu Nov 18, 2010 7:47 pm

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SSDR Rules

Postby tom@covehouse.demon.co.uk » Mon Nov 22, 2010 5:37 pm

I've never been able to suss out how the SSDR regs generaly are policed. I know that when you apply for registration with the CAA you have to enclose a copy of the 3rd party insurance, but with none of the Permit to Fly regime anyone could build just about anything and claim it as an SSDR. The only time that one may come to grief would be if you had a crash (which would have to be reported to the CAA) and/or had to make an insurance claim.
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Postby NickChittenden » Tue Nov 23, 2010 9:44 pm

One would need to burn the evidence quickly!
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Postby tony bishop » Mon Dec 20, 2010 10:31 pm

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Postby Dave Stephens » Tue Dec 21, 2010 10:26 pm

I do believe that you have to show the CAA insurance before you fly, and there is a set amount of time that you have to do it before the date of the first flight.

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Postby John Dean » Tue Dec 21, 2010 11:46 pm

Dave would appear to be correct. Section 7 of the Civil Aviation (Insurance) Regulations 2005 states:-

7. - (1) On applying for the registration of an aircraft in the United Kingdom under article 4(6) of the Order, the following shall be provided to the CAA -

(a) an insurance certificate or any other evidence of insurance relating to the aircraft for aviation-specific liability in respect of passengers, baggage, cargo or third parties; or

(b) a declaration in writing that the applicant will not permit the aircraft to be flown other than as a State aircraft unless he has first provided to the CAA such a certificate or such evidence of insurance.
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Postby G.Dawes » Fri Aug 26, 2011 8:49 pm

I want to know if the wing area mentioned is precisely that or does lifting body fuselage meet the criteria as wing area. anyone think that it may?
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Postby Bill McCarthy » Mon Aug 29, 2011 7:28 pm

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Postby ian herdis » Tue Aug 30, 2011 3:43 pm

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Postby Ian Melville » Tue Aug 30, 2011 7:00 pm

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Re: SSDR rules

Postby carlmeek » Mon May 06, 2013 9:22 pm

I'm quite fascinated how this works in the real world.

For example: If I get insurance on an aircraft i've designed myself, and then apply to the CAA, presumably nobody checks anything.... so what's to stop me registering a plank of wood as an aeroplane?
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Re: SSDR rules

Postby Ian Melville » Tue May 07, 2013 6:16 am

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