N-reg machines from
ROTORSPOT (an incomplete list, at least at the global level, judging by gaps in the serial numbers)
Rotorspot is the online hotspot dedicated to rotorcraft registration and production data. Rotorspot detailed search results can be found on this 'database search results' page.
www.rotorspot.nl
(then manually counting, roughly)
About 320 RAFs
About 236 AutoGyro Europe/USA/Rotorsport UKs
About 115 Magnis
About 100 Sport Copters
About 35 ELAs
About 34 Tangos
About 14 Celiers
About 11 TAGs
About 7 Trendaks
About 6 Apollos
About 3 Brakos
About 3 Nikis
About 1 DTA
About 1 Trixy
then presumably hundreds (thousands?) of homebuilts.
All the above not factoring for
w/os, etc.
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Approaching it from another, more systematic, direction, downloading what
ROTORSPOT describe as
"Current (active) civil rotorcraft register for USA", and filtering by make we find
50 SIlverlights
108 RAFs
229 AutoGyro Europe/USA/Rotorsport UKs
111 Magnis
61 Sport Copters
30 ELAs
27 Tangos
16 Celiers
10 TAGs
5 Trendaks
6 Apollos
4 Brakos
5 Nikis
1 DTA
1 Trixy
664 machines from common manufacturers out of a total of all
1,402 machines with the designation "[gyro]", supposedly on the "active register".
If anyone's interested, the rest (most of them)
364 Bensens
91 Air Commands
49 Dominators
42 Brocks
41 Sparrowhawks
14 Butterflys
12 Barnetts
8 Air & Spaces
7 Gyrobees
7 Airgyros
6 Aviomanias
6 LIttle Wings
6 McCullochs
5 Parsons
5 Twinstarrs
4 Vaneks
4 Pitcairns
3 Gyro Technics
3 SnoBirds
2 Predators
1 PItbull
1 Kellett