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Ultraflight Manufacturing Sparrowhawk
 Aero-Dynamics Sparrow Hawk N5832M
The Sparrow Hawk is a twin boom, twin fin, ultralight aircraft built with mixed construction including Kevlar, Carbon Fiber, Polyurethane Foam, a Rotax 532 four-stroke engine in Pusher configuration, and features a cantilever shoulder wing, fixed landing gear and two seat enclosed cockpit. Former Boeing design engineer Charles "Chuck" Herbst was responsible for the original design.
The public debut of the Sparrow Hawk was at the EAA Annual Convention and Fly-In in July 1985, when two Sparrow Hawks attended, registered N5793F and N5832M. The manufacturer and model of N5793F is recorded by the Federal Aviation Administration (FAA) as an "Ultralight Aircraft Ltd Sparrow Hawk Mk II", while N5832M is recorded as an "Aero Dynamics Ltd Sparrow Hawk MkII".
Seven were manufactured by Aero Dynamics Limited.
 Sparrow Hawk (G-BOZU, not marked, arrived by road) at a fly-in at Wroughton Airfield in July 1992
Although it did fly, the SparrowHawk was a somewhat marginal airplane that needed redesign to correct a number of problems including empennage flutter, drive design and some less than sufficient structure. It was also underpowered.
 The design faltered and exchanged hands several times, being held longest by the same folks who owned the now failed NSI. During that period the project really went nowhere, and it was gathering dust in the corner of their shop.
A Sparrow Hawk (N23SH) is currently preserved at the Oakland Aviation Museum.
Powerplant: 1 × Rotax 532, 64 hp (48 kW)
Wingspan: 34 ft 5 in (10.49 m)
Length: 17 ft 10 in (5.44 m)
Maximum speed: 105–130 mph (169–209 km/h; 91–113 kn)
Cruise speed: 95–120 mph (153–193 km/h; 83–104 kn)
Stall speed: 36 mph (58 km/h; 31 kn)
Crew: one
Capacity: one passenger
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