FAA-listed STC holder

Thrush Aircraft Inc. STCs

The Jun 30, 2026 FAA DRS snapshot lists 16 selected supplemental type certificates with status Current under Thrush Aircraft Inc.. The records span 3 public aircraft directories and 3 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Jul 30, 2003

latest recorded revision

Modification mix

Engine and powerplant9 Cabin and interiors6 Fuel systems1

Aircraft represented

Ayres S-2R19 STCs Ayres S2R-R3S12 STCs Ayres S2R-T347 STCs

Recently revised records

Showing the 16 most recently revised records. Category directories provide the complete paginated discovery path.

16 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Thrush Aircraft Inc. supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SA3237WE Installation of a United Aircraft of Canada PT6A-27 or PT6A-34 engine in accordance with Serv-Aero Engineering, Inc. Drawing List 537761, revision dated July 15, 1976, or later FAA Sealed revisions. FAA approved Serv-Aero Engineering, Inc. Airplane Flight Manual dated November 30, 1976, or later FAA approved revisions, is required as part of this installation for the PT6A-27 engine. FAA approved Serv-Aero Engineering, Inc. Airplane Flight Manual dated July 23, 1976, or later FAA approved revisions, is required as part of this installation for the PT6A-34 engine. Aircraft incorporating the PT6A-34AG engine and engines converted to the PT6A-34AG configuration per Ayres Corporation Service Bulletin 001 dated August 25, 1977, or later FAA approved revisions, require Ayres Corporation Airplane Flight Manual (AFM) dated August 29, 1977, or later approved revisions. This AFM replaces the Serv-Aero Engineering, Inc. AFM and basic S-2R AFM. Engine and powerplant View record	Ayres S-2RTC A3SW	Current at cited snapshot Revised Jul 30, 2003 Application: Dec 23, 1974	FAA holder: Thrush Aircraft Inc. FAA authority record
SA3238WE Installation of a United Aircraft of Canada PT6A-27 or PT6A-34 engine in accordance with Serv-Aero Engineering, Inc. Drawing List 527761, revision dated July 15, 1976, or later FAA Sealed revisions. FAA approved Serv-Aero Engineering, Inc. Airplane Flight Manual dated November 30, 1976, or later FAA approved revisions, is required as part of this installation for the PT6A-27 engine. FAA approved Serv-Aero Engineering, Inc. Airplane Flight Manual dated July 23, 1976, or later FAA approved revisions, is required as part of this installation for the PT6A-34 engine. Aircraft incorporating the PT6A-34AG engine and engines converted to the PT6A-34AG configuration per Ayres Corporation Service Bulletin 001 dated August 25, 1977, or later FAA approved revisions, require Ayres Corporation Airplane Flight Manual (AFM) dated August 29, 1977, or later approved revision, and Ayres Corporation AFM Supplement for Restricted Category Operation dated August 29, 1977, or later approved revision. This AFM and supplement replace the Serv-Aero Engineering, Inc. AFM and basic S-2R AFM. Engine and powerplant View record	Ayres S-2RTC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Dec 23, 1974	FAA holder: Thrush Aircraft Inc. FAA authority record
SA3767WE Installation of 500 gallon fiberglass hopper and relocated oil cooler in accordance with FAA sealed Serv-Aero Engineering, Inc. Master Drawing List No. MDL 83178, dated October 26, 1978, or later FAA approved revision. P & W PT6A-34 engine installed per STC SA3238WE and FAA approved Serv-Aero Airplane Flight Manual dated October 26, 1978, are required with this installation. (S2R RESTRICTED CATEGORY). Engine and powerplant View record	Ayres S-2RTC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Apr 11, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA3842WE Installation of 500 gallon fiberglass hopper and relocated oil cooler and deletion of the alternate air inlet doors in accordance with FAA sealed Serv-Aero Engineering, Inc. Master Drawing List No. MDL 83178, dated October 26, 1978, or later FAA approved revision. P & W PT6A-34 engine installed per STC SA3237WE and FAA approved Serv-Aero Airplane Flight Manual Supplement dated January 25, 1979, are required with this installation. (S2R NORMAL CATEGORY). Engine and powerplant View record	Ayres S-2RTC A3SW	Current at cited snapshot Revised Jul 30, 2003 Application: Dec 1, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA3897WE Installation of Pezetel Model PZL-3S engine and Dowty Rotel Model CR289/3-110-F/1 propeller in accordance with Serv-Aero Engineering, Inc. Installation Procedure No. 32679, dated March 26, 1979. Parts manufactured in accordance with FAA sealed Serv-Aero Master Drawing List No. MDL-9500, dated March 26, 1979, or later FAA approved revision. (S2R RESTRICTED CATEGORY). Engine and powerplant View record	Ayres S-2RTC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Nov 9, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA3961WE Installation of extended engine mount, revised cowling and induction system, Hamilton Standard 22D40 or 12D40 constant speed propeller, and modified elevator trim tab system in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL5379, dated May 3, 1979, or later FAA approved revision. Pratt and Whitney R1340-AN-1 engine previously installed per Type Certificate A4SW is required with this installation. (Restricted Category). Engine and powerplant View record	Ayres S-2RTC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Nov 9, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4038WE Installation of second pilot s seat and dual controls in accordance with Serv-Aero Engineering, Inc. sealed Master Drawing List MDL 9279, dated September 2, 1979, or later FAA approved revision. Pezetel PZL-3S engine required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 10079 dated October 29, 1979 is required with this installation. (S2R S/N 2526R AND UP MODIFIED BY STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP). Cabin and interiors View record	Ayres S-2RTC A4SW Ayres S2R-R3STC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Nov 9, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4045WE Installation of second pilot s seat and dual controls in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 9179, dated September 1, 1979, or later FAA approved revision. Pezetel PZL-3S engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 100979 dated October 29, 1979 is required with this installation. (S2R S/N 2526R and up modified by STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP NORMAL CATEGORY). Cabin and interiors View record	Ayres S-2RTC A3SW Ayres S2R-R3STC A3SW	Current at cited snapshot Revised Jul 30, 2003 Application: Nov 9, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4046WE Installation of passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 10379 "A", dated November 16, 1979, or later FAA approved revision. Pezetel PZL-3S engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 101079 dated November 26, 1979 is required with this installation. (S2R S/N 2526R and up modified by STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP). Engine and powerplant View record	Ayres S-2RTC A4SW Ayres S2R-R3STC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Nov 9, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4047WE Installation of passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 101179 "A", dated November 16, 1979, or later FAA approved revision. Pezetel PZL-3S engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 101079 dated November 26, 1979 is required with this installation. (S2R S/N 2526R AND UPmodified by STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP, NORMAL CATEGORY). Engine and powerplant View record	Ayres S-2RTC A3SW Ayres S2R-R3STC A3SW	Current at cited snapshot Revised Jul 30, 2003 Application: Nov 9, 1978	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4107WE Installation of second pilot s seat and dual controls or passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 020180, dated February 1, 1980, or later FAA approved revision. UACL PT6A-34A engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 022280 dated March 17, 1980 is required with this installation. (S2R S/N 2526R AND UP MODIFIED BY STC SA3238WE) (S2R-T34 S/N 6009-6049, S/N T34-001 AND UP). Cabin and interiors View record	Ayres S-2RTC A3SW Ayres S2R-T34TC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Jan 30, 1980	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4108WE Installation of second pilot s seat and dual controls or passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 020280, dated February 2, 1980, or later FAA approved revision. UACL PT6A-34A engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 022280 dated March 17, 1980 is required with this installation. (S2R S/N 2526R AND UP MODIFIED BY STC SA3237WE) (S2R-T34 S/N 6009-6049, S/N T34-001 AND UP). Cabin and interiors View record	Ayres S-2RTC A3SW Ayres S2R-T34TC A3SW	Current at cited snapshot Revised Jul 30, 2003 Application: Jan 30, 1980	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4112WE Installation of second pilot s seat and dual controls or passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 012880 "A", dated April 21, 1980, or later FAA approved revision. P&W R-1340-AN-1 engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual Nermission. Supplemental Type Certificate Addendum No. SA4112WE is a part of this STC. (S2R s/n 2526R and up modified by STC SA3961WE). Cabin and interiors View record	Ayres S-2RTC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Jan 30, 1980	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4113WE Installation of second pilot s seat and dual controls or passenger/cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 012980 "A", dated April 21, 1980, or later FAA approved revision. P&W R-1340-AN-1 engine is required with this installation. FAA Approved Serv-Aero Airplane Flight Manual No. 012880 dated April 22, 1980 is required with this installation. (S2R S/N 2526R AND UP MODIFIED BY STC SA3961WE). Cabin and interiors View record	Ayres S-2RTC A3SW	Current at cited snapshot Revised Jul 30, 2003 Application: Jan 30, 1980	FAA holder: Thrush Aircraft Inc. FAA authority record
SA4268WE Installation of Wright R-1820-71, -60, GR1820G-202A; 702C9GC1, 2, 3, 4; 704C9GC1, 2, 3, or 4 engines and Hamilton Standard 43D50 or 33D50 constant speed propeller or Wright R1820-97 engine and H.S. 23E50 propeller, 506 gallon fiberglass hopper, wing mounted oil cooler, and revised cargo compartment in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL 9700 "A", dated November 24, 1980, or later FAA approved revision. FAA Approved Serv-Aero Airplane Flight Manual No. 112680, dated November 26, 1980 is required with this modification. See continuation sheets. (S2R, S/N 2526R AND UP, S2R-R3S, S/N R3S-001 AND UP). Engine and powerplant View record	Ayres S-2RTC A4SW Ayres S2R-R3STC A4SW	Current at cited snapshot Revised Jul 30, 2003 Application: Oct 28, 1980	FAA holder: Thrush Aircraft Inc. FAA authority record
SE00265AT Install Ayres Fuel Manifold Purge Assembly Kit, P/N 21757-1 in accordance with "Installation Instructions - Ayres P/N 21757-1 Fuel Manifold Purge Assy-Kit" Dwg. No. 21757-1(1), Revision none, dated April 20, 1993, or later FAA approved revision. Fuel systems View record	AlliedSignal TPE331-1TC E3WE AlliedSignal TPE331-1UTC E3WE AlliedSignal TPE331-1UATC E3WE AlliedSignal TPE331-2TC E3WE AlliedSignal TPE331-2UTC E3WE AlliedSignal TPE331-2UATC E3WE AlliedSignal TPE331-10TC E4WE AlliedSignal TPE331-10ATC E4WE AlliedSignal TPE331-10AVTC E4WE AlliedSignal TPE331-10BTC E4WE AlliedSignal TPE331-10GTC E4WE AlliedSignal TPE331-10GPTC E4WE AlliedSignal TPE331-10GRTC E4WE AlliedSignal TPE331-10GTTC E4WE AlliedSignal TPE331-10JTC E4WE AlliedSignal TPE331-10NTC E4WE AlliedSignal TPE331-10PTC E4WE AlliedSignal TPE331-10RTC E4WE AlliedSignal TPE331-10TTC E4WE AlliedSignal TPE331-10UTC E4WE AlliedSignal TPE331-10UATC E4WE AlliedSignal TPE331-10UFTC E4WE AlliedSignal TPE331-10UGTC E4WE AlliedSignal TPE331-10UGRTC E4WE AlliedSignal TPE331-10UJTC E4WE AlliedSignal TPE331-10UKTC E4WE AlliedSignal TPE331-10URTC E4WE AlliedSignal TPE331-11UTC E4WE AlliedSignal TPE331-11UATC E4WE AlliedSignal TPE331-12TC E4WE AlliedSignal TPE331-12BTC E4WE AlliedSignal TPE331-12JRTC E4WE AlliedSignal TPE331-12UATC E4WE AlliedSignal TPE331-12UARTC E4WE AlliedSignal TPE331-12UERTC E4WE AlliedSignal TPE331-12UHRTC E4WE AlliedSignal TPE331-3TC E4WE AlliedSignal TPE331-3UTC E4WE AlliedSignal TPE331-3UWTC E4WE AlliedSignal TPE331-3WTC E4WE	Current at cited snapshot Revised Jul 30, 2003 Application: Jan 29, 1993	FAA holder: Thrush Aircraft Inc. FAA authority record