Schweizer aircraft, gliders and helicopters

[Stargazer]

Here is an attempt at listing all known Schweizer designations.

SGU indicates Schweizer Gliders - Unpowered
SGM indicates Schweizer Gliders - Motor
SA indicates Schweizer Aircraft
SHU indicates Schweizer Helicopters - Unmanned (to be confirmed)
SHM indicates Schweizer Helicopters - Manned (to be confirmed)


1- indicates a single-seater
2- indicates a two-seater
etc.


SGU-1-1 PRIMARY (also designated SGP-1-1)
SGU-1-2
SGU-1-3


SGU-1-6
SGU 1-7
SGS 2-8
SGS 2-8 U.S. Army Air Force TG-2 training glider (1941)
SGS 2-8 U.S. Army Air Force TG-2A
SGS 2-8 U.S. Navy LNS-1

SGC-8-10
SGC 15-11
SGS 2-12 (1943)
SGS 2-12 U.S. Army Air Force (XTG-3)
2-12A U.S. Army Air Force TG-3
2-12A U.S. Army Air Force TG-3A

SGC 6-14
SGC 1-15
SGU 1-16
SGS 1-17
SGS 2-18
SGU-1-19
SGM-1-19 powered version of SGU 1-19
SGU 1-20 also designated SGS 1-20
SGS 1-21
SGU 2-22/C
SGU 2-22E U.S. Air Force TG-2A training glider
SGS 1-23/D
SGS 1-23H
SGS 1-23H-15
SGS 1-23HM (1954)
SGS 1-24 BRIGADOON, built by Schweizer-Burr (1953)
SGS 2-25
SGS 2-25 U.S. Air Force TG-1A sailplane used by the Air Force Academy
SGS 1-26 U.S. Air Force TG-3A sailplane used by the Air Force Academy (1954)
SGS 1-26A
SGS 1-26B U.S. Air Force TG-3A 'THUNDER' sailplane used by the Air Force Academy
SGS 1-26C
SGS 1-26D
SGS 1-26E USAF TG-3B sailplane used by the Air Force Academy (1971)
2-27
7-28
SGS 1-29 (1948)
1-30 motorized glider
2-31
SGS 2-32 U.S. Air Force X-26A (1964)
SGS 2-32S U.S. Air Force TG-5A sailplane used by the Air Force Academy
SGS 2-33
SGS 2-33/A U.S. Air Force TG-4A sailplane used by the Air Force Academy
SGS 2-33AK
SGS 1-34 U.S. Air Force TG-6A sailplane used by the Air Force Academy
SGS 1-34B
SGS 1-35 T-TAIL (1972); same as the CLUB-35 ?
SGS 1-36 SPRITE
SGM 2-37 U.S. Air Force TG-7A
SGM 2-37A U.S. Air Force RG-8A
SA 2-37B U.S. Air Force RG-8A CONDOR
SA 2-38A USCG RU-38A TWIN CONDOR
SA 3-38A

SHU-40B FIRE SCOUT demonstrator
SHM-41A SIKORSKY X2 demonstrator

TSC-1A1 TEAL amphibian
TSC-1A2 TEAL amphibian (1972)
(no details) X-27A tow target aircraft (probably a Navy designation)


FORMER HUGHES > McDONNELL DOUGLAS HELICOPTER TYPES
(all marketed now under the name Sikorsky)

269C (300C) / SKY KNIGHT
269C-1 (300CB)
269C-1 (300CBi) new model
269D (330)
269D (330SP)
269D (333) > USAF MQ-8A new model

TH-300C

S-333 redesignation of Model 333
S-434 new model

 

[AM]

Hi all

SGP = Schweizer Glider Primary trainer

SGU-1-1 SGP 1-1 (1930, 1989) 2 built
SGU 1-2 (1931) 1 built
SGU 1-3 (1933) 1 built
...4 (project)
...5 (project)
SGU 1-6 (1937) 1 built
SGU 1-7 (1937-38) 2 built
SGS 2-8 (1938-42) 57 built
...9 (project)
SGC 8-10

 

[AM]

SGC 15-11
SGS 2-12 (1942-43) 114 built
...13 (project)
SGC 6-14 (project)
SGC 1-15 (project)
SGU 1-16 (project)
SGS 1-17 (project)
SGS 2-18 (project)
SGU 1-19 (1944-46) 50 built
SGU 1-20 (1949) 1 built

 

[AM]

SGS 1-21 (1947-48) 2 built
SGS 2-22 Std (1946) 51 built (2-22 all models - 258)
SGS 2-22A (19??) 3 built
SGS 2-22C (19??) 75 built
SGS 2-22CK (19??) 29 built
SGS 2-22E (1967) 88 built
SGS 2-22EK (19??) 12 built
SGS 1-23 Std (1949) 21 built (2-23 all models - 74)
SGS 1-23B (1952) 1 built
SGS 1-23C (1952) 1 built
SGS 1-23D (1954) 12 built
SGS 1-23E (1954) 1 built
SGS 1-23F (19??) 1 built
SGS 1-23G (19??) 8 built
SGS 1-23H (19??) 10 built
SGS 1-23H-15 (1969) 19 built
SGS 1-24 (1950) 1 built
SGS 2-25 (1954) 1 built
SGS 1-26 (1954) 22 built (1-26all models -689)
SGS 1-26AK (19??) 117 built
SGS 1-26B (19??) 184 built
SGS 1-26CK (19??) 87 built
SGS 1-26D (19??) 79 built
SGS 1-26E (1980) 200 built
...2-27 (project)
...7-28 (project)
SGS 1-29 (1960) 1 built
...1-30 ?

 

[AM]

...2-31 ?
SGS 2-32 (1967-76) 87 built
SGS 2-33 (1967) 85 built (2-33 all models - 579)
SGS 2-33A (1984) 484 built
SGS 2-33AK (19??) 10 built
SGS 1-34 (1969) 84 built
SGS 1-34R (1979) 9 built
SGS 1-35 (1973) 58 built
SGS 1-35A (19??) 2 built
SGS 1-35C (1982) 41 built
SGS 1-36 (1980-82) 43 built
SGM 2-37 (1981-87) 12 built

From "Sailplanes By Schweizer. A History" Paul A. Schweizer, Martin Simons, 1998

 

[Jos Heyman]

In 1960 the US Air Force purchased 30 Schweizer 2-22 as TS-1A with serials 60-6631/6660 and 30 Schweizer 1-26 as S-2A with serials 60-6661/6690.
Does anybody have further details of this puirchase and/or photos of the aircraft concerned?

 

[Grey Havoc]

With regards as to the SGP 1-1, was 1989 the date of a rebuild of an existing SGP 1-1, or did they find the parts for, and complete a, 'new' SGP 1-1? Was it to mark a particular historical event?

Just curious.

 

[Stargazer]

In 1960 the US Air Force purchased 30 Schweizer 2-22 as TS-1A with serials 60-6631/6660 and 30 Schweizer 1-26 as S-2A with serials 60-6661/6690.
Does anybody have further details of this puirchase and/or photos of the aircraft concerned?

So what this indicates is that an "S- for sailplane" existed in the pre-1962 system?! Wow. Never heard of that one before.

With regards as to the SGP 1-1, was 1989 the date of a rebuild of an existing SGP 1-1, or did they find the parts for, and complete a, 'new' SGP 1-1?

I asked myself exactly the same thing and was also at a loss for an answer... Either a rebuild or the renewal of a registration, perhaps indicating that the glider had been abroad in the meantime?

 

[Jos Heyman]

Yes, the 'S' for Sailplanes did exist, obviously from 1960 to 1962. The S-1 and S-2 were the only designations issued.
You no doubt know about S=Sonic Test (from 1946 to 1948 - 1 to 5 were used which became X=Experimental) whilst there was also S=Search and Rescue (1948-12955). The latter was never used.

Jos

 

[robunos]

With regards as to the SGP 1-1, was 1989 the date of a rebuild of an existing SGP 1-1, or did they find the parts for, and complete a, 'new' SGP 1-1? Was it to mark a particular historical event?

From 'Sailplanes by Schweizer', page 15 :-

"That it not quite the end of the SGP 1-1. In 1989 SchweizerAircraft Corporation
celebrated fifty years since incorporation, and fifty nine years after the first few
hops of the Schweizer's primary glider, a full-scale flying replica was built.
The original plans had been lost, but Ernie [Schweizer] redrew them from memory
and the second SGP 1-1 was constructed by a group of fifty volunteers from the
Schweizer plant...."


cheers,
Robin.

 

[robunos]

More from 'Sailplanes by Schweizer' :-

SGP1-1 1st built 1930, 2nd 1989, see above.
#1 wrecked Thanksgiving Day 1930 and rebuilt as SGU1-1A,
with faired fuselage. Damaged summer 1931 and stored.
destroyed 1945.

SGU 1-2 'yellow peril'.Heavy and complicated structure,
with poor handling. Little used as 1-3 superior.
Painted in surplus USN yellow dope hence nickname...

SGU 1-3 'brick'. So named because of unusual handling
qualities due to selected aerofoil section chosen,(Durand 24).
Superior to 1-2.

SGU 1-6 'boom tail'. First Schweizer all-metal design.

SGX 8-10 and SGX 15-11. 8 and 15 seat troop
carrying gliders to USAAC specifications. Not pursued as
specifications felt to be impractical. 8-10 span 94',
wing area 1,00sqft, 15-11 "wingspan bigger than a four engined bomber."


cheers,
Robin.

 

[robunos]

some more...

SGS 5/6-14. five/six seater troop glider utilising
TG-3 [SGS 2-12] components. Proposed to USAAF in 1943?
not built.

SGS 1-15. Single seat small cargo glider, designed to use the
'snatch' pick-up system. not built.

SGU 1-16. Improved 1-7 designed for postwar production.
not built.

SGS 1-17. High performance single seat sailplane.
Prototype fuselage constructed, but development discontinued.

SGS 2-18. Improved SGS2-8, abandoned following the
realisation that surplus TG-2s and TG-3s would flood the market
following the war's end.


cheers,
Robin.

 

[robunos]

and more...

SGA 2-27.two seat light aeroplane, designed 1955.
Not built, no other data.

??? 7-28. Commercial transport.
Not built, no other data.

SA 1-30. Single seat light aircraft, utilising 1-26 type
wings and tail surfaces. Continental 65hp engine.
First flight July 1958. Span later reduced to 36', and engine
replaced with 90hp version.

SA 2-31. Two seat side by side version of 1-30.
First flown July 1960.


cheers,
Robin.

 

[Stargazer]

Robunos, you ROCK! I don't know if all this scanning is legit, but thanks for the time it lasts!

 

[Stargazer]

Just found out about what seems to be a THREE-seat variant of the Schweizer Condor powered glider, designated the (SA-)3-38B. This is mentioned in the same resume that also produced the explanation for the SHU-40B designation.

Unless it was a typo, I'm curious what this looks like!

 

[robunos]

The SA 3-38B is a turboprop powered version of the
SA 3-38A [RU-38A] Twin Condor.
see :-

http://en.wikipedia.org/wiki/RU-38_Twin_Condor

http://www.sacusa.com/products/38Bmain2.asp


cheers,
Robin

 

[Stargazer]

Thanks Robunos. I knew about the SA 2-38A and -38B, but I wasn't aware that there also existed a three-seat version.

 

[Stargazer]

I am finally able to produce a complete list of Schweizer designations, due in large part to the reading of the most excellent Sailplanes by Schweizer - A History (Airlife, 1998):

SGP	1-1		primary trainer, originally designated HG-1; second airframe was a 1989 replica	—	—	1930		2​	none; N50SZ
SGU	1-2		larger primary trainer, calle "YELLOW PERIL"	—	—	1932		1​	unknown
SGU	1-3		small, light and practical glider, called "THE BRICK"	—	—	1933		1​	15317?
SGU	1-4		low-priced utility glider, not built, no data	—	—	nd		0​	—
SGU	1-5		low-priced utility glider, not built, no data	—	—	nd		0​	—
SGU	1-6		all-metal utility sailplane, called the "BOOM-TAIL"	—	—	1937		1​	R17897
SGU	1-7		all-metal utility sailplane of simpler construction, called "CRULLER" and "PTERODACTYL"	—	—	1937-38		2​	R19154, NR23028
SGS	2-8		prototype all-metal, tandem 2-seat shoulder-wing fabric-covered aluminum trainer sailplane	—	—	1938		1​	NX20642
			prototypes	USAAF	XTG-2-SW	1941		3​
			production version	USAAF	TG-2-SW			45​
			impressed examples	USAAF	TG-2A-SW	1942		7​
			Navy evaluation	US Navy	LNS-1			2?	(57 built in all)
	9		sailplane project to be built mainly in wood	—	—			0​	—
SGX	8-10		preliminary design for an eight-man troop-carrying glider	USAAC	—			0​	—
SGC	15-11		preliminary design for a fifteen-seat troop-carrying glider	USAAC	—			0​	—
SGS	2-12		two-seat training glider using as much wood as possible	—	—	1942		1​	NX41865
			prototypes	USAAF	XTG-3-SW	1942		3​
SGS	2-12A		production version	USAAF	TG-3A-SW	1942-43		110​
			sole example built by Air Gliders from Ohio	USAAF	TG-3A-AG	1943		1​
SGS	5/6-14		TG-3-based high-wing 5-6 seat troop glider proposal	USAAF	—	1943		0​	—
SGS	1-15		project with TG-3A components, shortened wings, large cargo compartment behind the cockpit	—	—			0​	—
SGU	1-16		project based on the 1-7 but was to be slightly larger	—	—			0​	—
SGS	1-17		high-performance, single-seat sailplane	—	—			0​	—
SGS	2-18		improved SGS 2-8, not built	—	—			0​	—
SGU	1-19		single-seat glider suitable for solo training, capable of being built from a kit by students	—	—	1944-46		57​
SGM	1-19		powered version of SGU 1-19; designation probably apocryphal	—	—			[1]	NX33513
SGU	1-20		extended-span version of the 1-19 (also some 1-19 conversions) (also SGS variant?)	—	—	1946		2​	N(X)91840, unknown
SGS	1-21		high-performance all-metal single-seat sailplane	—	—	1947-48		2​	NX91856, NX91861
SGS	2-22		new, light and cheap trainer, basically a scaled-up 1-7, a.k.a. "Standard 2-22"	—	—	1946		51​
SGS	2-22A		sailplane used by the Air Force Academy; longer nose, increase in permitted all-up weight	USAF	TG-2A	1957		3​
SGS	2-22B		civil version of the 2-22A, all updated to 2-22C status	—	—			…
SGS	2-22C		version with narrower-chord ailerons	—	—			45​
			to Indonesia during 1961-62, as part of an aid package to help with youth pilot-training program	USAF	—			30​
SGS	2-22CK		kit version	—	—			29​
SGS	2-22E		new moulded canopy and larger cockpit, transparent panel in wing roots	—	—	1963		88​
SGS	2-22EK		kit version	—	—	1963		12​
SGS	1-23		lower-priced all-metal single-seat sailplane, a.k.a. "Standard 1-23"	—	—	1948-49		21​	N91873, N91874, N91883, etc.
SGS	1-23B		variant with increased span to improve its performance	—	—	1952		1​
SGS	1-23C		same as 1-23B but stronger and stiffer spars and thicker skins for smoother and quieter wing	—	—	1952		1​	N91885
SGS	1-23D		production model, a compromise between the B and C models	—	—	1953-54		12​	N91891, etc.
SGS	1-23E		special variant for Paul MacCready	—	—	1954		1​	N91893
SGS	1-23F		same as 1-23E but heavier skins and butt jointing everywhere to eliminate all laps	—	—	1956		1​
SGS	1-23G		production model of 1-23F with larger vertical tail surface for improved handling	—	—			8​
SGS	1-23H		like 1-23G but aerodynamically balanced dive brakes (1-23HM mention dubious)	—	—			19​
SGS	1-23H-15		International Standard Class version, with span limited to 15 m, air brakes added	—	—	1958		10​
SGS	1-24		"BRIGADOON" personal project of Howard E. Burr built as a Schweizer-Burr inside the company plant	—	—	1953		1​	N91888
SGS	2-25		high performance two-seat sailplane, a 120% scaled-up 1-23D with a span of 60 ft.	—	—	1954		1​	N91892
			same airframe offered to the Air Force Academy; damaged severely by a rotor	USAF	TG-1A			[1]
SGS	1-26		One-Design Class sailplane, called the "Standard 1-26"	—	—	1954		22​	N91889
SGS	1-26AK		kit version	—	—	1955		117​
SGS	1-26B		new version with wing completely metal skinned except for the ailerons	—	—	1956		184​
			sailplane used by the Air Force Academy, called "THUNDER"	USAF	TG-3A			[ ]
SGS	1-26CK		kit version	—	—			87​
SGS	1-26D		new version with small improvements; includes 30 for Indonesia	—	—	1968		79​
SGS	1-26E		fabric-covered rear fuselage replaced with an all-aluminium alloy monocoque	—	—	1970-80		200​
			sailplane used by the Air Force Academy	USAF	TG-3B	1971		[ ]
SA	2-27		two-seat light aeroplane project	—	—	nd		0​	—
SA	7-28		much larger aeroplane project, intended as a commercial transport	—	—	nd		0​	—
SGS	1-29		experimental glider with new rectangular wing design	—	—	1958-60		1​	N3898A
SA	1-30		motorized glider, a single-seat aeroplane using as many glider parts as possible	—	—	1958		1​	N3840A
SA	2-31		fuselage similar to that of the 1-30, but mated to strengthened 1-26B wings	—	—	1960		1​	N10360
SGS	2-32		high-performance two-seat sailplane to introduce inexperienced pilots to advanced flying	—	—	1964-76		87​	N8600R, etc.
			FRIGATE experimental derivative	USAF	X-26A			[1]
SGS	2-32S		sailplane used by the Air Force Academy	USAF	TG-5A
SGS	2-33		economical glider with all-metal wings, evolved from the 2-22	—	—	1965-67		85​
SGS	2-33A		variant with balanced rudder and some other minor improvements; sometimes found as the SUPER CLUB	—	—	1968-84		470​
			sailplane used by the Air Force Academy	USAF	TG-4A			14​
SGS	2-33AK		kit version	—	—	1973		10​
	X-391		two sets of different wings tested on a 1-26 fuselage for preparation of 1-34	—	—	1968		2​
SGS	1-34		all-metal Standard Class sailplane	—	—	1969		93​	N7700S, N7675, N76JP, etc.
			sailplane used by the Air Force Academy	USAF	TG-6A			[ ]
SGS	1-34R		no details (a Model SGS 1-34B also existed?)	—	—	1979		9
SGS	1-35		T-tail, first Schweizer sailplane to use flaps instead of spoilers or airbrakes; sometimes found as the CLUB-35	—	—	1972-73		58​	N17900, N34187, etc.
SGS	1-35A			—	—			2​
SGS	1-35C			—	—	1982		41​
SGS	1-36		SPRITE. One-Design Class glider to replace the 1-26	—	—	1979		43
SGS	1-36C		SPRITE. version with forward-mounted landing wheel and no nose skid	—	—
SGM	2-37		all-metal motor glider with side-by-side seating (single company example later sold to USAF)	USAF	TG-7A	1983-87		9​
SA	2-37A		quiet surveillance aeroplane with additional span by the addition of winglets; possibly more built		RG-8A	1985-90		5+	N3623C, N701AN, N12139, N4122L, N87260
SA	2-37B		CONDOR.	USCG	RG-8A			5+	N2061L, N2067F, N30745, N10673, N40623
SA	2-38A		TWIN CONDOR, twin-engine version of the 2-37	USCG	RU-38A	1995
SA	3-38A
SA	2-38B								N2101J, N2082C, N2083N
SA	3-38B
SA	2-39		planned production of Saab-Scania AB MFI-15-200A Safari trainer for Enhanced Flight Screener competition	USAF	—	1991
SHU	40B		FIRE SCOUT drone helicopter; became a Teledyne Ryan, then Northrop Grumman product	demonstrator	MQ-8A	2005			N4646W (P5)
SHM	41A		same as the Sikorsky X2	demonstrator					N41AX > N525SA

 

[Stargazer]

Key to above chart:

SA: Schweizer Aircraft

SGM: Schweizer Glider, Motorized

SGP: Schweizer Glider, Primary Trainer

SGS: Schweizer Gider, Sport

SGU: Schweizer Glider, Utility

SGX: Schweizer Glider, Experimental

SHM: Schweizer Helicopter, Manned

SHU: Schweizer Helicopter, Unmanned

First figure corresponds to the number of seats.

 

[airplane176]

The TS-1A were SGS 1-26D for Indonesia. Most of the S-2A were SGU 2-22C also for Indonesia. 3 more were for the USAF Academy. See the USAF Statistical Digest for 1957 and 1958. This might show two of the Indonesian S-2A: http://jetphotos.net/viewphoto.php?id=445610&nseq=2

Roger

 

[Jos Heyman]

Thanks airplane176.
A lot of time passed since my original post in May 2011 and since then I have found similar information.
Indeed they were supplied to Indonesia as TS-1A and S-2A whilst the USAF Academy operated some without designations but with serials 57-2769, 57-2770 and 57-2771 for the 2-22 (equivalent to the TS-1A) and 57-2768 for the 1-26 (equivalent to S-2A). A photo of the latter is enclosed.

 

[airplane176]

Jos,

I was browsing through and thought that I might be able to add something new. Thank you for the picture and verification. As I mentioned in my Curtiss/Record Card posting, I have a website: http://aircraft.list-of-domains.org/. I also troll around the Aerodrome Forum looking for early information.

Thank you again,

Roger

 

[Stargazer]

the USAF Academy operated some without designations but with serials 57-2769, 57-2770 and 57-2771 for the 2-22 (equivalent to the TS-1A) and 57-2768 for the 1-26 (equivalent to S-2A).

Uh?? I have the SGS 1-26B as the TG-3A and the SGS 1-26E as the TG-3B... (not the old TG- series, of course, the new G- series with a T-for-trainer prefix). However, I only have three of both versions combined, but obviously you're listing four serials This being said, the photo of the TG-3A I'm attaching below shows a different glider since it has a squared-off rudder... So I'm really puzzled here...

 

[robunos]

When Schweitzer introduced the 1-26D version, they switched to a more modern looking swept, squared -off fin and rudder,

"...other small improvements were introduced to produce the 1-26D...and a swept tail was designed, purely for styling."

so the image you posted is a 1-26, but it is a 1-26D or E, so the image is incorrect for the 'TG-3A' designation.

Source :- 'Sailplanes by Schweitzer', Schweitzer/Simons, ISBN 1 84037 022 X

cheers,
Robin.

 

[Stargazer]

Thanks a lot Robin. So perhaps there were three TG-3A types (Model 1-26B with rounded tail) and one TG-3B (Model 1-26E with squared tail)? Seems like the most likely conclusion of all this.

 

[robunos]

I can't help any further with this, as there's no list of individual aircraft identities in the Schweitzer book...

cheers,
Robin.

 

[Jos Heyman]

Yes, the Schweizer SGS 1-26B was also the TG-3A, a single-seat glider used at the US Air Force Academy. Aircraft included serials and registrations 66-900354 (N2426W), 66-900358 (N2426W), 77-900265 (N5830V), 77-900484 (N1155S), 91-0515 (used by the US Army) and 92-624 (N33894).
A TG-3B version (type 1-26E) was in use with serials and registrations 78-900681 (N296LH), 78-900682 (N2952H), 79-900696 (N2983H), 89-461 (N17953), 89-462 (N17920) and 89-463. Other known registrations are N1137S (c/n 517), N17920 (c/n 530), N17953 (c/n 553), N33894 (c/n 624), N33926 (c/n 641).
Of course the S=Sailplanes series was in the old USAF serials system whilst the G=Glider series is a DoD designation. Different time frames.

 

[Stargazer]

Yes, the Schweizer SGS 1-26B was also the TG-3A, a single-seat glider used at the US Air Force Academy. Aircraft included serials and registrations 66-900354 (N2426W), 66-900358 (N2426W), 77-900265 (N5830V), 77-900484 (N1155S), 91-0515 (used by the US Army) and 92-624 (N33894).
A TG-3B version (type 1-26E) was in use with serials and registrations 78-900681 (N296LH), 78-900682 (N2952H), 79-900696 (N2983H), 89-461 (N17953), 89-462 (N17920) and 89-463. Other known registrations are N1137S (c/n 517), N17920 (c/n 530), N17953 (c/n 553), N33894 (c/n 624), N33926 (c/n 641).
Of course the S=Sailplanes series was in the old USAF serials system whilst the G=Glider series is a DoD designation. Different time frames.

Thanks a lot Jos. So apparently the four 57-... examples you refered to predate the new G-series and were not redesignated after 1962.

 

[Jos Heyman]

Thanks a lot Jos. So apparently the four 57-... examples you refered to predate the new G-series and were not redesignated after 1962.

You're right. In fact 57-2768 (c/n 62), 57-2769 (c/n 52) and 57-2771 (c/n 54) were written off in 1958 at Colorado Springs. 57-2770 (c/n 53) became N5638V in December 1959.

 

[hesham]

And from Sailplane and Glider magazine,


here is a 1-19 and 2-22 three views.

 

[theGliderNut]

Yes, the Schweizer SGS 1-26B was also the TG-3A, a single-seat glider used at the US Air Force Academy. Aircraft included serials and registrations 66-900354 (N2426W), 66-900358 (N2426W), 77-900265 (N5830V), 77-900484 (N1155S), 91-0515 (used by the US Army) and 92-624 (N33894).
A TG-3B version (type 1-26E) was in use with serials and registrations 78-900681 (N296LH), 78-900682 (N2952H), 79-900696 (N2983H), 89-461 (N17953), 89-462 (N17920) and 89-463. Other known registrations are N1137S (c/n 517), N17920 (c/n 530), N17953 (c/n 553), N33894 (c/n 624), N33926 (c/n 641).
Of course the S=Sailplanes series was in the old USAF serials system whilst the G=Glider series is a DoD designation. Different time frames.

I have n2426w, if any you have any history of this particular glider, please post it on here! Thanks!