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No. of STCs: 28

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA00332DE	Status: Current	App Date: 11/13/1995	Rev Date: 01/14/1998
Description: Installation of Wastegate Exhaust Inlet elbow.
TC Nos.: 3A25
Models: Cessna Aircraft Company340A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA00333DE	Status: Current	App Date: 11/13/1995	Rev Date: 01/14/1998
Description: Installation of wastegate exhaust inlet elbow.
TC Nos.: A7CE
Models: Cessna Aircraft Company414, 414A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA00556DE	Status: Current	App Date: 07/09/2003	Rev Date: 09/23/2004
Description: Installation of a left-hand exhaust stack assembly.
TC Nos.: 3A10, 3A25, A25CE, A7CE
Models: Cessna Aircraft Company320, 320A, 320B, 320C, 320D, 320E, 320F, 335, 340, 340A, 401, 401A, 401B, 402, 402A, 402B, 402C, 404, 414, 414A, 421C, T310P, T310Q, T310R
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA102RM	Status: Current	App Date: 04/12/1977	Rev Date: 05/19/1977
Description: Installation of exhaust turbo connector, P/N 042177-5.
TC Nos.: A7CE
Models: Cessna Aircraft Company411, 411A, 421, 421A, 421B
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA103RM	Status: Current	App Date: 05/18/1977	Rev Date: 11/28/1990
Description: Installation of exhaust turbo connector, P/N 30477-3
TC Nos.: 3A10, 3A25, A25CE, A7CE
Models: Cessna Aircraft Company320A, 320B, 320C, 320D, 320E, 320F, 340, 340A, 401, 401A, 401B, 402, 402A, 402B, 402C, 404, 414, 414A, 421C, T310P, T310Q, T310R
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA108RM	Status: Current	App Date: 06/14/1977	Rev Date: 12/14/1977
Description: Modify exhaust stacks by replacing existing bellows or seal type joints with a clampless, sealess type slip joint.
TC Nos.: A7CE
Models: Cessna Aircraft Company411, 411A, 421, 421A, 421B
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA109RM	Status: Current	App Date: 06/17/1977	Rev Date: 12/14/1977
Description: Modify exhaust stacks by replacing existing bellows or seal type joints with a clampless sealess type slip joint.
TC Nos.: A7CE
Models: Cessna Aircraft Company401, 401A, 402, 402A, 402B, 414
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA110RM	Status: Current	App Date: 06/14/1977	Rev Date: 08/17/1977
Description: Modify Cessna exhaust system by replacement of the inter-cylinder expansion joints with a slip fit joint.
TC Nos.: 3A10, 3A25
Models: Cessna Aircraft Company320, 320A, 320B, 320C, 320D, 320E, 320F, 340, 340A, T310P, T310Q, T310R
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA111RM	Status: Current	App Date: 10/26/1977	Rev Date: 03/27/1978
Description: Modify exhaust stacks by installing straight slip joint.
TC Nos.: 6A1
Models: Twin Commander Aircraft LLC500-B
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1515NM	Status: Current	App Date: 06/25/1981	Rev Date: 11/04/1982
Description: Crossover exhaust pipe assembly.
TC Nos.: A7CE
Models: Cessna Aircraft Company411, 411A, 421, 421A, 421B
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1579NM	Status: Current	App Date: 03/19/1984	Rev Date: 05/22/1986
Description: Installation of replacement exhaust heat exchanger.
TC Nos.: 3A21
Models: Cessna Aircraft CompanyT210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1580NM	Status: Current	App Date: 03/19/1984	Rev Date: 05/22/1986
Description: Installation of replacement exhaust heat exchanger.
TC Nos.: A4CE
Models: Cessna Aircraft CompanyTP206A, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, TU206F, TU206G
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1594NM	Status: Current	App Date: 07/16/1984	Rev Date: 05/22/1986
Description: Installation of replacement exhaust heat exchanger.
TC Nos.: A16CE
Models: Cessna Aircraft CompanyT207, T207A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA169RM	Status: Current	App Date: 06/01/1978	Rev Date: 02/04/1985
Description: Installation of exhaust stacks.
TC Nos.: A7CE
Models: Cessna Aircraft Company411, 411A, 421, 421A, 421B
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA192RM	Status: Current	App Date: 02/20/1979	Rev Date: 12/20/1979
Description: New slip joint exhaust manifold.
TC Nos.: 3A10
Models: Cessna Aircraft CompanyT310P, T310Q, T310R
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA193RM	Status: Current	App Date: 02/20/1979	Rev Date: 12/20/1979
Description: New slip joint exhaust manifold.
TC Nos.: 3A25
Models: Cessna Aircraft Company320A, 320B, 320C, 320D, 320E, 320F, 340, 340A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA194RM	Status: Current	App Date: 11/15/1979	Rev Date: 12/20/1979
Description: New slip joint exhaust manifold.
TC Nos.: A7CE
Models: Cessna Aircraft Company401, 401A, 402, 402A, 402B, 414
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA195RM	Status: Current	App Date: 11/15/1979	Rev Date: 12/20/1979
Description: New slip joint exhaust manifold.
TC Nos.: A25CE
Models: Cessna Aircraft Company404
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA196RM	Status: Current	App Date: 11/19/1979	Rev Date: 12/20/1979
Description: New slip joint exhaust manifold.
TC Nos.: A7CE
Models: Cessna Aircraft Company421C
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2703NM	Status: Current	App Date: 01/28/1985	Rev Date: 03/28/1985
Description: Installation of replacement exhaust system riser.
TC Nos.: A4CE
Models: Cessna Aircraft CompanyTP206A, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, TU206F, TU206G
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2704NM	Status: Current	App Date: 01/28/1985	Rev Date: 03/28/1985
Description: Installation of replacement exhaust system riser.
TC Nos.: A16CE
Models: Cessna Aircraft CompanyT207, T207A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2705NM	Status: Current	App Date: 01/28/1985	Rev Date: 03/28/1985
Description: Installation of replacement exhaust system riser.
TC Nos.: 3A21
Models: Cessna Aircraft CompanyT210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2721NM	Status: Current	App Date:	Rev Date: 11/01/1985
Description: Installation of a turbocharger bypass exhaust elbow.
TC Nos.: A7CE
Models: The Cessna Aircraft Company421, 421A, 421B
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2765NM	Status: Current	App Date: 09/15/1986	Rev Date: 11/26/1986
Description: Installation of replacement left exhaust heat exchanger unit.
TC Nos.: 3A21
Models: Cessna Aircraft CompanyT210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2767NM	Status: Current	App Date: 09/15/1986	Rev Date: 04/15/1987
Description: Installation of replacement left exhaust heat exchanger unit.
TC Nos.: A4CE
Models: Cessna Aircraft CompanyTP206A, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, TU206F, TU206G
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2768NM	Status: Current	App Date: 09/15/1986	Rev Date: 01/12/1987
Description: Installation of replacement left exhaust heat exchanger unit. (T207A THRU 1984 MODEL YEAR)
TC Nos.: A16CE
Models: Cessna Aircraft CompanyT207, T207A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2786NM	Status: Current	App Date: 12/02/1985	Rev Date: 06/16/1987
Description: Installation of modified exhaust system.
TC Nos.: 3A21
Models: Cessna Aircraft CompanyP210N, P210R
ACO: AIR-770: West Certification Branch DEN

STC Holder: Heliarc Welding Service Inc. 3965 Newport Street, P.O. Box 38509, Denver, CO 80238, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2798NM	Status: Current	App Date: 09/14/1987	Rev Date: 10/28/1987
Description: Installation of modified exhaust heat muffler.
TC Nos.: 3A15
Models: Hawker Beechcraft Corporation35-C33A, 36, A36, E33A, E33C, F33A, F33C, G33, H35, J35, K35, M35, N35, P35, S35, V35, V35A, V35B
ACO: AIR-770: West Certification Branch DEN