Type Record · As of May 3, 2026
AYRES CORPORATION S2R-T11
Fixed Wing Single Engine · P&W CANADA PT6A-60A
Registered
3
Year Range
1979–1980
NTSB Events
1
Airworthiness Directives
12
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered AYRES CORPORATION S2R-T11 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- MI 33.3% 1
- TX 33.3% 1
- IA 33.3% 1
By Decade of Manufacture
- 1970s 33.3% 1
- 1980s 66.7% 2
02 / NTSB Records
Events involving AYRES CORPORATION S2R-T11 aircraft
1 event(s) on file. Showing the most recent 1.
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Sep 19, 2001
N40173Spur, Texas
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to AYRES CORPORATION S2R-T11
12 directive(s) on file. Showing the most recent 12.
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Jan 20, 2010
Airworthiness Directives; Thrush Aircraft, Inc. Model 600 S2D and S2R Series Airplanes
We are adopting a new airworthiness directive (AD) to supersede AD (AD) 2006-07-15, which applies to Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) series airplanes (type certificate previously held by Quality Aerospace, Inc. and Ayres Corporation). AD 2006-07-15 currently requires repetitive inspections of the 1/…
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May 4, 2009
Airworthiness Directives; Thrush Aircraft, Inc. (Type Certificate Previously Held by Quality Aerospace, Inc. and Ayres Corporation) Model 600 S2D and S2R (S-2R) Series Airplanes
We propose to supersede Airworthiness Directive (AD) 2006-07- 15, which applies to Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) series airplanes (type certificate previously held by Quality Aerospace, Inc. and Ayres Corporation). AD 2006-07-15 currently requires repetitive inspections of the \1/4\-inch and \5/16…
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Apr 4, 2006
Airworthiness Directives; Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) Series Airplanes
The FAA is adopting a new airworthiness directive (AD) to supersede AD 2003-07-01, which applies to certain Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) series airplanes (type certificate previously held by Quality Aerospace, Inc. and Ayres Corporation). AD 2003-07-01 currently requires you to repetitively inspe…
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Apr 1, 2003
Airworthiness Directives; Quality Aerospace, Inc. S2R Series and Model 600 S2D Airplanes
This amendment supersedes Airworthiness Directive (AD) 2000- 11-16, which currently applies to certain Quality Aerospace, Inc. (Quality Aerospace) (formerly Ayres Corporation) S2R series and Model 600 S2D airplanes. AD 2000-11-16 requires you to repetitively inspect the \1/4\-inch and \5/16\-inch bolt hole areas on th…
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Nov 8, 2002
Airworthiness Directives; Quality Aerospace, Inc., S2R Series and Model 600 S2D Airplanes
This document proposes to supersede Airworthiness Directive (AD) 2000-11-16, which currently applies to certain Quality Aerospace, Inc. (Quality Aerospace) (formerly Ayres Corporation) S2R series and Model 600 S2D airplanes. AD 2000-11-16 requires you to repetitively inspect the \1/4\-inch and \5/16\-inch bolt hole ar…
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Jun 7, 2000
Airworthiness Directives; Ayres Corporation S2R Series and Model 600 S2D Airplanes
This amendment supersedes Airworthiness Directive (AD) 97-17- 03, which currently requires you to accomplish the following on Ayres Corporation (Ayres) S2R Series and Model 600 S2D airplanes: inspect the \1/4\-inch and \5/16\-inch bolt hole areas on the lower spar caps for fatigue cracking; replace any lower spar cap…
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Feb 16, 2000
Airworthiness Directives; Ayres Corporation S2R Series and Model 600 S2D Airplanes
This document proposes to revise an earlier proposed airworthiness directive (AD) that the Federal Aviation Administration (FAA) issued against Ayres Corporation (Ayres) S2R series and Model 600 S2D airplanes. The earlier proposed rule would supersede the existing AD with a new AD that would require you to repetitivel…
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Nov 24, 1999
Airworthiness Directives; Ayres Corporation S2R Series Airplanes
This document proposes to adopt a new airworthiness directive (AD) that would apply to all Ayres Corporation (Ayres) S2R series airplanes that are equipped with at least one main landing gear fuselage attach bolt with a grease fitting installed through the shank. The proposed AD would require replacing the main landin…
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Jan 13, 1999
Airworthiness Directives; Ayres Corporation S2R Series and Model 600 S2D Airplanes
This document proposes to supersede Airworthiness Directive (AD) 97-17-03, which currently requires inspecting the \1/4\-inch and \5/16\-inch bolt hole areas on the lower spar caps for fatigue cracking on Ayres S2R series and Model 600 S2D airplanes, and replacing any lower spar cap where fatigue cracking is found. Th…
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Aug 18, 1997
Airworthiness Directives; Ayres Corporation S2R Series Airplanes
This amendment supersedes Airworthiness Directive (AD) 97-13- 11, which currently requires inspecting the \1/4\-inch and \5/16\-inch bolt hole areas on the lower spar caps for fatigue cracking on Ayres S2R series airplanes, and replacing any lower spar cap if fatigue cracking is found. That AD resulted from an acciden…
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Jul 10, 1997
Airworthiness Directives; Ayres Corporation S2R Series Airplanes
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 97-13-11, which was sent previously to known U.S. owners and operators of certain Ayres Corporation (Ayres) S2R series airplanes. This AD requires inspecting the \1/4\-inch and \5/16\-inch bolt hole areas on the lower sp…
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Apr 26, 1996
Airworthiness Directives; Hartzell Propeller Inc. HC-A3V, HC-B3M, HC-B3T, HC-B4M, HC-B4T, and HC-B5M Series Propellers
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Hartzell Propeller Inc. (Hartzell) HC-A3V, HC-B3M, HC-B3T, HC-B4M, HC- B4T, and HC-B5M series propellers. This proposal would require hub replacement over a 10-year time period with a concurrent blade and blade clamp inspec…
04 / Type Certificate Data Sheets
FAA TCDS for AYRES CORPORATION S2R-T11
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 2 matches in the FAA catalog.
- A4SW Historical Rev 42 · 12/20/2023
Thrush Aircraft LLC.
Models: 600 S-2D, S2R-T65, S2R-G1, S2R-R1340 + 16 more
- A3SW Current Rev 19 · 12/11/2014
Thrush Aircraft Inc.
Models: S2R-R3S, S2R, 600 S-2D, S2R-T34 + 4 more
05 / Special Airworthiness Information Bulletins
Advisories applicable to AYRES CORPORATION S2R-T11
2 SAIBs on file. SAIBs are FAA advisory notices — not mandatory like ADs, but worth reviewing for service bulletins and emerging issues.
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07/24/1998
SAIB ACE-98-42
SAIB ACE-98-42 —
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12/16/1997
SAIB ACE-98-17
SAIB ACE-98-17 —
06 / Supplemental Type Certificates
Modifications approved for AYRES CORPORATION S2R-T11
108 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
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05/16/2023
STC SA4267WE
Installation of modified horizontal stabilizer.
Randy Goering Inc.
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09/09/2022
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc
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06/19/2018
STC SA00902CH
Installation of Walter a.s. turboprop engine model M601D-11 or M601E-11 with Avia Propeller Ltd. model V510, V510AG, V508E-AG/99A or V508E-AG/106A in accordance with Turbine Conver…
Turbine Conversions Ltd
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05/01/2018
STC SA903GL
Installation of a spin-off filter assembly in the engine scavenge oil system.
Airwolf Filter Corp
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03/09/2018
STC SA903GL
Installation of a spin-off filter assembly in the engine scavenge oil system.
Sky-Tractor Supply Co
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12/03/2013
STC SA00172SE
Installation of the following Garrett engines: TPE331-1-151A, -151K, -151G; TPE331-2-201A, -201C, or TPE331-6-252M, -252B, -252T, in combination with a Hartzell HC-B3TN-5(M)/T1028…
Valley Air Service Inc
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12/05/2011
STC SA4374NM
: Installation of a pitot-type engine air intake in accordance with R. David Record Installation Manual, dated August 18, 1988, and Master Print List No. 062088, dated September 2…
Waukena Flying Services Inc.
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01/04/2011
STC SA24RM
Installation of electrically driven air-conditioning system in accordance with FAA Drawing List No. S2-001 dated March 28, 1974, or DL-S2 dated September 19, 1977, or subsequent FA…
Meggitt (Addison) Inc.
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02/07/2007
STC SA00172SE
Installation of the following Garrett engines: TPE331-1-151A, -151K, -151G; TPE331-2-201A, -201C, or TPE331-6-252M, -252B, -252T, in combination with a Hartzell HC-B3TN-5(M)/T1028…
Turbine Dromaders LLC
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06/02/2006
STC SP00400SE (1 OF 3)
Install SMR Technologies propeller electrical deicer.
SMR Technologies
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05/31/2006
STC SA00172SE
Installation of Garrett engines: TPE331-1-151A, -151K, -151G; TPE331-2-201A, -201C, or TPE331-6-252M, -252B, -252T.
Kawak Aviation Technologies Inc
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05/31/2006
STC SA00034SE
Installation of AG-Air Systems, Inc., chemical disbursement system. (S2R modified per STC SA5953NM and S2R-G10 modified per STC SA00172SE)
Kawak Aviation Technologies Inc
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04/12/2005
STC SA00902CH
Installation of Walter a.s. turboprop engine model M601D-11 or M601E-11 with Avia Propeller Ltd. model V510, V510AG, V508E-AG/99A or V508E-AG/106A in accordance with Turbine Conver…
Turbine Conversions Ltd
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06/01/2004
STC SA01639NY
Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B.
Scale Modelbuilders Inc.
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02/06/2004
STC SA903GL
Installation of a spin-off filter assembly in the engine scavenge oil system.
Sky-Tractor Supply Co
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11/07/2003
STC SA4005NM (Page 1)
Precise Flight Inc. Pulselite Control System
Precise Flight Inc
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05/27/2003
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc.
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05/27/2003
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc
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03/06/2003
STC SA01639NY
Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B.
Scale Modelbuilders Inc.
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11/14/2002
STC SA01440AT
Installation of Motorlet Model Walter M601E-11 engine and an AVIA-Hamilton Standard Aviation-Ltd. Model VJ8.510 propeller.
Johnson Airspray Inc.
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06/14/2002
STC SA1287GL
Surrendered and incorporated into STC SA241CH.
Cooper Aviation Supply Company, Inc.
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06/14/2002
STC SA1095GL
Surrendered and incorporated into STC SA00478CH.
Cooper Aviation Supply Company, Inc.
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06/14/2002
STC SA1286GL
Surrendered and incorporated into STC SA241CH.
Cooper Aviation Supply Company, Inc.
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06/14/2002
STC SA1096GL
Surrendered and incorporated into STC SA00478CH.
Cooper Aviation Supply Company, Inc.
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04/15/2002
STC SA1638WE
Fabrication and installation of400-gallon fiberglass hopper.
Transland Aircraft Inc
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01/14/2002
STC SA00622LA
Installation of an electronic digital engine tachometer horizon model P-1000.
Horizon Instruments Inc
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11/26/2001
STC SA4046WE
Installation of passenger/cargo compartment. (S2R S/N 2526R and up modified by STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP)
Quality Aerospace, Inc.
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11/26/2001
STC SA4047WE
Installation of passenger/cargo compartment. (S2R S/N 2526R AND UPmodified by STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP, NORMAL CATEGORY)
Quality Aerospace, Inc.
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11/26/2001
STC SA4038WE
Installation of second pilot's seat and dual controls. (S2R S/N 2526R AND UP MODIFIED BY STC SA3897WE) (S2R-R3S S/N R3S-001 AND UP)
Quality Aerospace, Inc.
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11/26/2001
STC SA4112WE
Installation of second pilot's seat and dual controls or passenger/cargo compartment. (S2R s/n 2526R and up modified by STC SA3961WE)
Quality Aerospace, Inc.
+ 78 more STCs on file
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for AYRES CORPORATION S2R-T11
Advisory Circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 3 registered N-numbers
Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →