STC Holder: Williams Robert or Barbara

The Aviation DataBase -- STC Selection System
Aviation DataSource, Inc.

No. of STCs: 26

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1004CE	Status: Current	App Date:	Rev Date: 08/28/1985
TC Nos.: 5A6, 5A6,
Models: The Cessna Aircraft Company: 180 , 180A , 180B , 180C , 180D , 180E, 180F , 180G , 180H , 180J , 180K
ACO: AIR-760: Central Certification Branch WI
Install STOL kit.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1056SW	Status: Current	App Date:	Rev Date: 04/27/1984
TC Nos.: A6CE, A2CE,
Models: The Cessna Aircraft Company: 336 , 337 , 337A (USAF 02B) , 337B , 337C , 337D , 337E, 337F , T337C , T337D , T337E , T337F
ACO: AIR-760: Central Certification Branch WI
Revise wing contours, leading edge and redesign landing light deflector plates.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1100SW	Status: Current	App Date:	Rev Date: 04/27/1984
TC Nos.: 3A21, 3A21,
Models: The Cessna Aircraft Company: 210G , 210H , 210J , 210K , T210G , T210H , T210J, T210K
ACO: AIR-760: Central Certification Branch WI
Increase wing leading edge radius.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1371SW	Status: Current	App Date: 07/16/1971	Rev Date: 04/14/1983
TC Nos.: 3A12, 3A13, 3A14, 3A17, 3A19, 3A21, 3A24, 5A2, 5A5, 5A6, A-799, A13CE, A16CE, A4CE, 3A12,
Models: Cessna Aircraft Company: 140A , 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , 152 , 170 , 170A , 170B , 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K , 172L , 175 , 175A , 175B , 175C , 177 , 180 , 180A , 180B , 180C , 180D , 180E , 180F , 180G , 180H , 182 , 182A , 182B , 182C , 182D , 182E , 182F , 182G , 182H , 182J , 182K , 182L , 182M , 182N , 185 , 185A , 185B , 185C , 185D , 185E , 206 , 207 , 210 , 210-5 (205) , 210-5A (205A) , 210A , 210B , 210C , 210D , 210E , 210F , 210G , 210H , 210J , 210K , 210L , 210M , A150K , A150L , A150M , A152 , A185E , P206 , P206A , P206B , T207 , T210F , T210G , T210H , T210J , T210K , T210L , T210M Regal Air Inc.: 305A , 305B , 305C , 305D , 305E , 305F
ACO: AIR-760: Central Certification Branch WI
Wing leading cuff, wing tips and upper surface flow fences.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1446SW	Status: Current	App Date: 01/24/1972	Rev Date: 04/27/1984
TC Nos.: A9CE, A9CE,
Models: The Cessna Aircraft Company: 188, A188
ACO: AIR-760: Central Certification Branch WI
Installation of wing leading edge cuff, strut fairings, and vortex generators.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1446SW	Status: Historical	App Date:	Rev Date: 04/27/1984
TC Nos.: A9CE, A9CE,
Models: The Cessna Aircraft Company: 188, A188
ACO: Wichita ACO Branch, Tel: +1 (316) 946-4100
Installation of wing leading edge cuff, strut fairings, and vortex generators.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA1474SW	Status: Current	App Date: 03/22/1972	Rev Date: 09/05/1979
TC Nos.: 3A12, 3A13, 3A17, 3A19, 3A21, 3A24, 5A2, 5A5, 5A6, A-799, A16CE, A4CE, 5A5,
Models: Regal Air Inc.: 305A , 305C , 305D , 305F Textron Aviation Inc.: 140A , 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 170A , 170B , 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K , 172L , 175 , 175A , 175B , 175C , 180 , 180A , 180B , 180C , 180D , 180E , 180F , 180G , 180H , 182 , 182A , 182B , 182C , 182D , 182E , 182F , 182G , 182H , 182J , 182K , 182L , 182M , 182N , 185 , 185A , 185B , 185C , 185D , 185E , 206 , 207 , 210 , 210-5 (205) , 210-5A (205A) , 210A , 210B , 210C , 210D , 210E , 210F , A150K , A150L , A185E , P206 , P206A , P206B , P206C , P206D , P206E , T207 , T210F , TP206A , TP206B , TP206C , TP206D , TP206E , TU206A , TU206B , TU206C , TU206D , TU206E , U206 , U206A , U206B , U206C , U206D , U206E
ACO: AIR-760: Central Certification Branch WI
Installation of 'MASA' 1223000-7 and -8 wing tip.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA150NW	Status: Current	App Date: 10/24/1974	Rev Date: 03/22/1994
TC Nos.: 3A12, 3A13, 3A17, 3A19, 3A21, 3A24, 5A5, 5A6, A-799, 3A12,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , 152 , 170B, 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K , 172L , 172M , 172N , 172P , 175 , 175A , 175B , 175C , 180 , 180A , 180B , 180C , 180D , 180E , 180F , 180G , 180H , 180J , 180K , 182 , 182A , 182B , 182C , 182D , 182E , 182F , 182G , 182H , 182J , 182K , 182L , 182M , 182N , 182P , 182Q , 185 , 185A , 185B , 185C , 185D , 185E , 210 , 210-5 (205) , 210-5A (205A) , 210A , 210B , 210C , 210D , 305A (USAF 0-1A) , 305C (USAF 0-1E) , 305D (USAF 0-1G) , 305F , A150K , A150L , A150M , A152 , A185E , A185F , R172K , R182 , TR182
ACO: AIR-760: Central Certification Branch WI
Installation of flap gap seals.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA150NW	Status: Historical	App Date:	Rev Date: 09/06/1989
TC Nos.: 3A12, 3A13, 3A17, 3A19, 3A21, 3A24, 5A5, 5A6, A-799, 3A12,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , 152 , 170B, 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K , 172L , 172M , 172N , 172P , 175 , 175A , 175B , 175C , 180 , 180A , 180B , 180C , 180D , 180E , 180F , 180G , 180H , 180J , 180K , 182 , 182A , 182B , 182C , 182D , 182E , 182F , 182G , 182H , 182J , 182K , 182L , 182M , 182N , 182P , 182Q , 185 , 185A , 185B , 185C , 185D , 185E , 210 , 210-5 (205) , 210-5A (205A) , 210A , 210B , 210C , 210D , 305A (USAF 0-1A) , 305C (USAF 0-1E) , 305D (USAF 0-1G) , 305F , A150K , A150L , A150M , A152 , A185E , A185F , R172K , R182 , TR182
ACO: Wichita ACO Branch, Tel: +1 (316) 946-4100
Installation of flap gap seals.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA217RM	Status: Current	App Date: 03/09/1980	Rev Date: 04/19/1991
TC Nos.: 3A19, 3A19,
Models: Cessna Aircraft Company: 150K , 150L , 150M , 152 , A150K , A150L , A150M , A152
ACO: AIR-760: Central Certification Branch WI
Installation of Lycoming O-360-A1A engine (150 hp.), Sensenich76EM8S10-0-56 propeller, revised engine mount and fuel system, dorsal fin, wing leading edge cuffs, wing fences, aileron gap closures and other changes.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA221GL	Status: Current	App Date:	Rev Date: 04/13/1982
TC Nos.: 3A19, 3A19,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K, 150L , 150M , 152
ACO: AIR-760: Central Certification Branch WI
Installation of wheel replacement type skis, FluiDyne all metal (TSO approved) Model A2000A main skis, FluiDyne Model AT2000A tail ski.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA256NW	Status: Historical	App Date:	Rev Date: 03/07/1986
TC Nos.: 3A12, 3A13, 3A17, 3A19, 3A21, 3A24, 5A6, A-799, 3A12,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , 152 , 170 , 170A , 170B, 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K , 172L , 172M , 172N , 172P , 175 , 175A , 175B , 175C , 180 , 180A , 180B , 180C , 180D , 180E , 180F , 180G , 180H , 180J , 180K , 182 , 182A , 182B , 182C , 182D , 182E , 182F , 182G , 182H , 182J , 182K , 182L , 182M , 182N , 182P , 182Q , 185 , 185A , 185B , 185C , 185D , 185E , 210 , 210-5 (205) , 210-5A (205A) , A150K , A150L , A150M , A152 , A185E , A185F , P172D , R172K , R182
ACO: Wichita ACO Branch, Tel: +1 (316) 946-4100
Installation of aileron gap seals. (R172K XP) (R182 RG) (210 THRU S/N 21058220THRU S/N 21058220)

STC Holder: Williams Robert or Barbara Address: PO Box 431, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA256NW	Status: Current	App Date: 11/03/1975	Rev Date: 04/12/1993
TC Nos.: 3A12, 3A13, 3A17, 3A19, 3A21, 3A24, 5A6, A-799, 3A19,
Models: Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , 152 , 170A , 170B , 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K , 172L , 172M , 172N , 172P , 172Q , 172RG , 175 , 175A , 175B , 175C , 180 , 180A , 180B , 180C , 180D , 180E , 180F , 180G , 180H , 180J , 180K , 182 , 182A , 182B , 182C , 182D , 182E , 182F , 182G , 182H , 182J , 182K , 182L , 182M , 182N , 182P , 182Q , 182R , 185 , 185A , 185B , 185C , 185D , 185E , 210 , 210-5 (205) , 210-5A (205A) , A150K , A150L , A150M , A152 , A185E , A185F , P172D , R172K , R182 , T182 , TR182
ACO: AIR-760: Central Certification Branch WI
Installation of aileron gap seals.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA268GL	Status: Current	App Date:	Rev Date: 04/13/1982
TC Nos.: 3A19, 3A19,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , 152 , A150K, A150L , A150M , A152
ACO: AIR-760: Central Certification Branch WI
Installation of wheel and ski adapters on Models 150F, G, H, J, K, L, M, 152 aircraft modified per STCSA175GL. Installation of adapter extension-landing gear, landing-gear extended-assembly of Models 150, 150A - H, J - M, A150K - A150M, 152, A152 aircraft modified per STC SA175GL.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA2800CE	Status: Historical	App Date:	Rev Date: 04/08/1992
TC Nos.: 3A12, 3A12,
Models: The Cessna Aircraft Company: 172L , 172M , 172N, 172P
ACO: Wichita ACO Branch, Tel: +1 (316) 946-4100
Gross weight increase to 2550 pounds.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA318GL	Status: Current	App Date:	Rev Date: 04/13/1982
TC Nos.: 3A19, 3A19,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D, 150E
ACO: AIR-760: Central Certification Branch WI
Installation of Bolen wheel extenders on Cessna models modified per STC SA175GL and/or SA268GL.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA319GL	Status: Current	App Date:	Rev Date: 04/13/1982
TC Nos.: 3A12, 3A12,
Models: The Cessna Aircraft Company: 172D, 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A) , 172I , 172K
ACO: AIR-760: Central Certification Branch WI
Installation of Bolen wheel extenders on Cessna models modified per STCSA296GL.

STC Holder: Williams Robert or Barbara Address: Box 608, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA383GL	Status: Current	App Date: 01/08/1980	Rev Date: 04/13/1982
TC Nos.: 3A17, 3A17,
Models: Cessna Aircraft Company: 175 , 175A , 175B , 175C, R172K
ACO: AIR-760: Central Certification Branch WI
Convert to conventional landing gear.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA419CE	Status: Current	App Date:	Rev Date: 01/28/1983
TC Nos.: 1A10, 1A10,
Models: The New Piper Aircraft Inc.: PA-23, PA-23-160
ACO: AIR-760: Central Certification Branch WI
Installation of engines, propellers, and dorsal fin, and increase takeoff weight.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA420CE	Status: Historical	App Date: 01/28/1966	Rev Date: 07/01/1975
TC Nos.: 3A12, 3A12,
Models: The Cessna Aircraft Company: 172 , 172A , 172B , 172C , 172D , 172E , 172F (USAF T-41A) , 172G , 172H (USAF T-41A)
ACO: Wichita ACO Branch, Tel: +1 (316) 946-4100
Installation of O-360-() series engines, fixed pitch and constant speed propellers. (172D, 172E, 172F (USAFT-41A), 172G, 172H (USAFT-41A FLOATPLANES (EDO89-2000 FLOATS ONLY) (172A, 172B, 172C LANDPLANES)

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA471CE	Status: Current	App Date:	Rev Date: 01/28/1983
TC Nos.: 1A10, 1A10,
Models: The New Piper Aircraft Inc.: PA-23 , PA-23-160
ACO: AIR-760: Central Certification Branch WI
Installation of dorsal fin.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA508GL	Status: Current	App Date:	Rev Date: 04/13/1982
TC Nos.: 3A17, 3A17,
Models: The Cessna Aircraft Company: 175 , 175A , 175B, 175C , R172K
ACO: AIR-760: Central Certification Branch WI
Installation of FluiDyne A2500A or AT2500A skis.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA572CE	Status: Current	App Date: 03/22/1968	Rev Date: 12/20/2001
TC Nos.: 3A19, 3A19,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E , 150F , 150G , 150H , 150J , 150K , 150L , 150M , A150K , A150L , A150M
ACO: AIR-760: Central Certification Branch WI
Installation of Lycoming 150 or 160 hp Model O-320 engine.

STC Holder: Williams Robert or Barbara Address: 213 N. Clark, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA750CE	Status: Current	App Date: 03/10/1971	Rev Date: 10/19/1987
TC Nos.: 3A19, 3A19,
Models: The Cessna Aircraft Company: 150 , 150A , 150B , 150C , 150D , 150E, 150F , 150G , 150H , 150J , 150K , 150L , 150M , A150K , A150L
ACO: AIR-760: Central Certification Branch WI
Installation of Lycoming 150 and160 hp Model O-320-( ) engine. (150, 150A, 150C, 150D, 150E, 150F, 150K, 150J, A150K, 150L, A150L, 150B, 150M, 150H, 150G LANDPLANES)

STC Holder: Williams Robert or Barbara Address: Box 654, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA793CE	Status: Current	App Date: 06/07/1971	Rev Date: 12/13/1988
TC Nos.: 2A13, 2A13,
Models: Piper Aircraft Inc.: PA-28-140, PA-28-150 , PA-28-151 , PA-28-160 , PA-28-161
ACO: AIR-760: Central Certification Branch WI
Install Lycoming O-360-( ) engine and Hartzell HC-C2YK-1B/7666A-2 or Sensenich 76EM8S5 or McCauley 1A170EFA propeller.

STC Holder: Williams Robert or Barbara Address: Box 654, Udall, KS 67146, United States		Contact us to have your company added here!
STC No.: SA806CE	Status: Current	App Date: 10/19/1971	Rev Date: 12/15/1993
TC Nos.: A-799, A-799,
Models: Cessna Aircraft Company: 170A, 170B
ACO: AIR-760: Central Certification Branch WI
Installation of Lycoming engine model O-360-( ) and propellers.