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john stones 130/06/2020 08:01:33
11597 forum posts
1517 photos

Models over 20kg are subject to inspection whilst being built then proving flights i believe ? What about an ARTF that weighs that ? Are there any large ARTF models that weight ?

And what rules apply to pilots owning/flying them, I know to join LMA and fly at events you will be assessed by someone, what if you just want to fly it at your club ?

Nigel R30/06/2020 08:04:29
3993 forum posts
727 photos

Think you still need an assessment John, as you're nudging into the region that CAA are interested in, well, interested enough to let LMA sort it all out for them.

What you need here is a friendly large chap, so to speak.

Steve J30/06/2020 08:34:59
1985 forum posts
54 photos


Chris Walby30/06/2020 09:21:33
1278 forum posts
315 photos

My understanding is the rules will change to AUW including fuel/batteries of 25Kg at some point.

IMHO its an agreement between the CAA and LMA, if you don't go the LMA route then you would have to comply with the CAA individually so that you can fly a model.

If it was ARTF then as long as the manufacturer has gone through the CAA build inspection process I can see an issue and has all the documentation. I think if you built a model or bought one (all be it ARTF) and it didn't have the paperwork it would be very difficult to retrospectively get it passed (would you sign off a 30kg 150MPH turbine just looking at the visible airframe?).

john stones 130/06/2020 09:25:54
11597 forum posts
1517 photos

Thanks lads I found what I needed in there. yes

Steve J30/06/2020 09:50:03
1985 forum posts
54 photos
Posted by Chris Walby on 30/06/2020 09:21:33:

My understanding is the rules will change to AUW including fuel/batteries of 25Kg at some point.

In the regulations that apply from the 30th December it is 25kg maximum take-off mass.

Paul Marsh30/06/2020 09:59:18
4072 forum posts
1225 photos

20kg is quite a large model. The Sbach I flew last week is less than 10kg, though even 120cc aerobats should keep below 20kg ok. Warbids might not be.

Peter Jenkins30/06/2020 10:22:07
1624 forum posts
305 photos

You building a big'un John?

Cuban830/06/2020 10:34:33
2993 forum posts
1 photos

An interesting conundrum. This Cub comes in at around the 26 Kilo mark


How would the internal inspection process work in the case of such an airframe as the big Cub if it was to be imported? AFAIA, individual aircraft are inspected throughout the build and signed off at the end after flying tests - so how will the quality of workmanship of an ARTF factory half way around the planet be monitored and signed off? I suppose this must have cropped up before, wonder how it was dealt with?

Way beyond my pay grade, but just curious.

Edited By Cuban8 on 30/06/2020 10:36:05

SR 7130/06/2020 10:54:40
462 forum posts
140 photos

Its gathering dust in a factory unit, it was ready for ginal painting, could not sell it20181126_141411.jpgI had to leave my 1/4 F104 Starfighter in Cyprus when i returned to live in the UK last year as it was 30 kg20190907_094441.jpg

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