Golden Circle Air T-Bird


The Golden Circle Air T-Bird is a family of high-wing, strut-braced, pusher configuration ultralight aircraft that was produced by Teratorn Aircraft of Clear Lake, Iowa from 1983 to 1989 and then Golden Circle Air of De Soto, Iowa from 1989 until the mid-2000s. In 2011 the aircraft were back in production by Indy Aircraft. The aircraft is produced as a kit for amateur construction.

Design and development

The original version of the T-Bird family was the Teratorn Tierra which was introduced in 1983. The aircraft achieved early success in the ultralight market, particularly in its side-by-side seating version, the Tierra II. The design passed from Teratorn to Golden Circle Air in 1989 and the aircraft was renamed the T-Bird. Golden Circle Air went out of business in the mid-2000s and the design was out of production until 2011, when Indy Aircraft resumed building them. Over 4000 of all models have been built.
The T-Bird is constructed from 6061-T6 aluminium tubing, bolted together, with the wing and tail surfaces covered in pre-sewn Mylar-coated Dacron envelopes. The cockpit area has a Lexan windshield and optional zippered cloth doors. The basic versions have conventional landing gear, with some models offering tricycle gear as an option. The cockpit controls consist of conventional rudder pedals and yoke control wheels. Construction time for the T-Bird I was reported as 60 hours.
The Tierra II introduced a 13-position trim system and also 13-position flaps.
The T-Bird I can qualify for the US FAR 103 Ultralight Vehicles category if equipped with a light enough engine, such as the Rotax 277, although reviewers have indicated that due to the high-drag design the aircraft is under-powered.
PilotMix describes the T-Bird I as "the most respected kit in the industry, and for good reason. It is absolutely the strongest and the easiest ultralight to build." Reviewer Andre Cliche calls it "robust...heavy and solid".

Variants

;Teratorn Tierra I
;Teratorn Tierra II
;Golden Circle Air T-Bird I
;Golden Circle Air T-Bird II
;Golden Circle Air T-Bird III
;Golden Circle Air T-Bird Tandem TBT06
;Indy Aircraft T-Bird I
;Indy Aircraft T-Bird II

Specifications (Tierra II)