I kept expecting a G- designation list to pop up. Here's a start ...
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USAF TG (Training Glider) and RG (Reconnaissance Glider) Designations
NB: the USAF dropped manufacturer code suffixes in 1976
TG-1 -- 1954 Schweizer SGS 2-25S 2-seat tandem training sailplane, USAF N225AF
- TG-1A-SW: single example donated to US Air Force Academy by George Arents Jr.
TG-2 -- TG-2A-SW, Schweizer SGU 2-22E 2-seat utility training sailplane
TG-3 -- 1960s, Schweizer SGS 1-26, single-seat sailplane, 12.19 m span, 3 used
- TG-3A-SW: SGS 1-26B, repl. by TG-10D Oct 2002, aka callsign 'Thunder'
- TG-3B-SW: 1971, SGS 1-26E (intro. 1971, metal monocoque fuselage)
TG-4 -- Schweizer 2-33A 2-seat tandem basic training sailplane, 12 (13?) used
- TG-4A: replaced by TG-10B 2002 (last flight 20 Feb 03)
TG-5 -- TG-5A-SW, Schweizer 2-32S tandem 2-seat training glider, 17.37 m span
TG-6 -- TG-6A-SW, Schweizer SGS 1-34 single-seat training glider, 15 m span
TG-7 -- Schweizer SGM 2-37 (M2-37A), motor glider, 18.14 m span, 9 used
- TG-7A: 112 hp Lycoming 0-235-L2C 4 cyl, retired Apr 2003 (repl. by TG-14A)
RG-8 -- Schweizer SA2-37BRG-8A* motorglider configured for reconnaissance role
- RG-8A-SW: Condor, 510 lb sensor payload, 1 x 250h 6-cyl Lycoming TIO-540-AB1AD
-- derived from Schweizer SGM 2-37A (SA2-37B) for USAF, USA, USCG, CIA, and FAC
-- 85-0047 (CG 8101, conv. to RU-38A), 85-0048 (w/o Sept 1986), 86-0404 (CG 8102)
TG-9 -- TG-9A, Alexander Schleicher ASK-21 medium performance sailplane, 17 m span
- TG-9A: 4 used (87-1973/'75), callsign 'Sabre', repl. 2002 by TG-10C (last flown May 2003)
TG-10 - Let Flugzeugwerk Blaník and Super Blaník for USAF Academy, aka G-10
- TG-10A: 2-seat Let L 23 Super Blaník, original cockpit layout (repl by TG-10B)
- TG-10B: Merlin 2-seat Let L 23 Super Blaník, 12 used
- TG-10C: Kestrel Let L 13 AC Blaník, 5 used
- TG-10D: Peregrine single-seat Let Blaník L 33 Solo, 4 used
TG-11 - Stemme S-10V 2-seat side-by-side motorglider cross-country trainer, 2 used
TG-11A: 1995, TG-11A was replaced by TG-14A (Nov 2002), 23 m span
TG-12 - Caproni-Vizzola A21 Calif 2-seat side-by-side training glider
- TG-12A: single A21 Calif used by USAF Test Pilot School
TG-13 - (Not applied in Post '63 TG Designation Sequence)
TG-14 - 2001, Grupo Aeromot AMT-200S Super Ximango 2-seat motorglider
- TG-14A: USAF Academy Introductory Flight Training Program, TG-7 repl.
TG-15 - Schempp-Hirth Discus-type high-performance glider, TG-10D replacement
- TG-15A: Schempp-Hirth Duo Discus XL tandem two-seater
- TG-15B: Schempp-Hirth Discus-2b single seater
TG-16 - 2011 DG Flugzeugbau GmbH DG-1001 Club, TG-10 replacement
- TG-16A: 18m span DG1001 Club cross-country trainer, 19 being purchased
-- 10-0001-10-0005, 10-0007-10-0011, 10-0059, 10-0094, 10-0100, 10-0200,
-- 10-0300, 10-0306, 10-0400, 10-0500, (??)
- TG-16B: no details, poss. confusion with TG-10B being replaced (??)
-- NB: 'TG-16B' listed among "Aircraft Static Displays", 2017-2018 306th Flying Training Group Open Houses
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