The newer of two Garaventa CTEC high speed quads built in two consecutive years at Snow Summit.Stealth I bottom terminal with chairs removed for NDT.Loading area.A section of the line.Breakover towers below the top station.Upper section of the line.Top drive station.Unloading area and CTEC operator house.
Stealth I was only built in 1993. It was only used on detachable quads. They only built three of them, all of which are still in service.
Stealth II systems were built from 1994 through 2000. It was used on detachable quads from 1994 through 1995, and both detachable quads and six-packs from 1996 through 1999. It was used on detachable quads in 2000, and all but one larger lift (Far East at Squaw Valley) utilized new Stealth III systems. Some Stealth IIs are a little bit different from the rest, but most of them are the same.
Stealth III systems were built starting in 2000, when they appeared on 3 six packs and 1 cabriolet (the detachable quads built that year were all Stealth IIs) They were last built by Doppelmayr CTEC in 2004 and were discontinued in favor of the Uni-GS. Stealth IIIs had an alternate terminal skin, seen at Deer Valley and Bretton Woods, among others; the standard skin is on Collins at Alta.
CTEC built its first detachable chairlift in partnership with Von Roll at Sollitude, UT in 1989.
Garaventa and CTEC built several detachables prior to the merger in late 1992. Such lifts include (1990) the Big Bear Express at Bear Mtn, CA, (1991) the Whitetail Exp. at Whitetail, PA (in the past I have called it “the most hideous detachable terminal I have ever seen” and I’m not kidding), (1991) Grouse Mountain Exp. at Beaver Creek, CO, and (1992) the Great Western Express at Brighton, UT.
Garaventa and CTEC also built a section of the Telluride Village Gondola in 1992 (the other two sections were finished in 1996 by post-merger Garaventa CTEC).
After the merger, they built a dozen other detachable lifts that didn’t fall into the “stealth” system. (5 detachable quads, 1 chondola, 4 gondolas, and a funitel).
Lift Blog 
What’s the difference between a Stealth I and a Stealth II?
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I belive the Stealth I is a quad and Stealth II is a six such as Far East at Squaw Valley.
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Stealth I was only built in 1993. It was only used on detachable quads. They only built three of them, all of which are still in service.
Stealth II systems were built from 1994 through 2000. It was used on detachable quads from 1994 through 1995, and both detachable quads and six-packs from 1996 through 1999. It was used on detachable quads in 2000, and all but one larger lift (Far East at Squaw Valley) utilized new Stealth III systems. Some Stealth IIs are a little bit different from the rest, but most of them are the same.
Stealth III systems were built starting in 2000, when they appeared on 3 six packs and 1 cabriolet (the detachable quads built that year were all Stealth IIs) They were last built by Doppelmayr CTEC in 2004 and were discontinued in favor of the Uni-GS. Stealth IIIs had an alternate terminal skin, seen at Deer Valley and Bretton Woods, among others; the standard skin is on Collins at Alta.
CTEC built its first detachable chairlift in partnership with Von Roll at Sollitude, UT in 1989.
Garaventa and CTEC built several detachables prior to the merger in late 1992. Such lifts include (1990) the Big Bear Express at Bear Mtn, CA, (1991) the Whitetail Exp. at Whitetail, PA (in the past I have called it “the most hideous detachable terminal I have ever seen” and I’m not kidding), (1991) Grouse Mountain Exp. at Beaver Creek, CO, and (1992) the Great Western Express at Brighton, UT.
Garaventa and CTEC also built a section of the Telluride Village Gondola in 1992 (the other two sections were finished in 1996 by post-merger Garaventa CTEC).
After the merger, they built a dozen other detachable lifts that didn’t fall into the “stealth” system. (5 detachable quads, 1 chondola, 4 gondolas, and a funitel).
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Where is the G-CTEC funnitel located?
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Squaw Valley
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What were the five detachable quads that didn’t have stealth terminals?
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I think Vail
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It seems like Garaventa CTEC also built a few lifts in South America, including 2 quads (Portillo, Caterdal) and a bubble six pack (Caterdal)
https://www.remontees-mecaniques.net/bdd/reportage-tsd6b-sextuple-express-garaventa-ctec-1208.html
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Where are the three 1993 HSQ? Northside at DV might be one if I recall, but what are the other two?
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the stealth 1 didn’t have the flat section on the front of the terminal. The stealth 2 does, so this is most likely a stealth II
Stealth I:
Stealth II:
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this lift used to be the original chair 10
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Here is a video of this lift.
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