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Type Record · As of May 3, 2026

AYRES CORPORATION S2R-R1820

Fixed Wing Single Engine · WRIGHT R-1820 SER

Registered

5

Year Range

1981–1989

NTSB Events

3

Airworthiness Directives

11

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered AYRES CORPORATION S2R-R1820 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

By State (top 10)

  • ND 40.0% 2
  • MI 20.0% 1
  • OH 20.0% 1
  • SD 20.0% 1

By Decade of Manufacture

  • 1980s 80.0% 4
  • Unknown 20.0% 1

02 /  NTSB Records

Events involving AYRES CORPORATION S2R-R1820 aircraft

3 event(s) on file. Showing the most recent 3.

03 /  Airworthiness Directives

FAA directives applicable to AYRES CORPORATION S2R-R1820

11 directive(s) on file. Showing the most recent 11.

  • 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/…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

  • 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…

    Atlas AD → Federal Register ↗

04 /  Type Certificate Data Sheets

FAA TCDS for AYRES CORPORATION S2R-R1820

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

    Atlas TCDS → DRS ↗
  • A3SW Current Rev 19 · 12/11/2014

    Thrush Aircraft Inc.

    Models: S2R-R3S, S2R, 600 S-2D, S2R-T34 + 4 more

    Atlas TCDS → DRS ↗

05 /  Special Airworthiness Information Bulletins

Advisories applicable to AYRES CORPORATION S2R-R1820

1 SAIB on file. SAIBs are FAA advisory notices — not mandatory like ADs, but worth reviewing for service bulletins and emerging issues.

06 /  Supplemental Type Certificates

Modifications approved for AYRES CORPORATION S2R-R1820

103 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

  • 05/16/2023

    STC SA4267WE

    Installation of modified horizontal stabilizer.

    Randy Goering Inc.

    Atlas STC → DRS ↗

  • 09/09/2022

    STC SA1008WE

    Installation of Poly-Fiber covering material.

    Poly-Fiber Inc

    Atlas STC → DRS ↗

  • 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

    Atlas STC → DRS ↗

  • 05/01/2018

    STC SA903GL

    Installation of a spin-off filter assembly in the engine scavenge oil system.

    Airwolf Filter Corp

    Atlas STC → DRS ↗

  • 03/09/2018

    STC SA903GL

    Installation of a spin-off filter assembly in the engine scavenge oil system.

    Sky-Tractor Supply Co

    Atlas STC → DRS ↗

  • 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

    Atlas STC → DRS ↗

  • 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.

    Atlas STC → DRS ↗

  • 04/17/2009

    STC SA01988SE (PAGE 1)

    Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P.

    Electronics International Inc.

    Atlas STC → DRS ↗

  • 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

    Atlas STC → DRS ↗

  • 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

    Atlas STC → DRS ↗

  • 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

    Atlas STC → DRS ↗

  • 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

    Atlas STC → DRS ↗

  • 06/01/2004

    STC SA01639NY

    Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B.

    Scale Modelbuilders Inc.

    Atlas STC → DRS ↗

  • 02/06/2004

    STC SA903GL

    Installation of a spin-off filter assembly in the engine scavenge oil system.

    Sky-Tractor Supply Co

    Atlas STC → DRS ↗

  • 11/07/2003

    STC SA4005NM (Page 1)

    Precise Flight Inc. Pulselite Control System

    Precise Flight Inc

    Atlas STC → DRS ↗

  • 05/27/2003

    STC SA1008WE

    Installation of Poly-Fiber covering material.

    Poly-Fiber Inc.

    Atlas STC → DRS ↗

  • 05/27/2003

    STC SA1008WE

    Installation of Poly-Fiber covering material.

    Poly-Fiber Inc

    Atlas STC → DRS ↗

  • 03/06/2003

    STC SA01639NY

    Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B.

    Scale Modelbuilders Inc.

    Atlas STC → DRS ↗

  • 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.

    Atlas STC → DRS ↗

  • 06/14/2002

    STC SA1287GL

    Surrendered and incorporated into STC SA241CH.

    Cooper Aviation Supply Company, Inc.

    Atlas STC → DRS ↗

  • 06/14/2002

    STC SA1095GL

    Surrendered and incorporated into STC SA00478CH.

    Cooper Aviation Supply Company, Inc.

    Atlas STC → DRS ↗

  • 06/14/2002

    STC SA1286GL

    Surrendered and incorporated into STC SA241CH.

    Cooper Aviation Supply Company, Inc.

    Atlas STC → DRS ↗

  • 06/14/2002

    STC SA1096GL

    Surrendered and incorporated into STC SA00478CH.

    Cooper Aviation Supply Company, Inc.

    Atlas STC → DRS ↗

  • 04/15/2002

    STC SA1638WE

    Fabrication and installation of400-gallon fiberglass hopper.

    Transland Aircraft Inc

    Atlas STC → DRS ↗

  • 01/14/2002

    STC SA00622LA

    Installation of an electronic digital engine tachometer horizon model P-1000.

    Horizon Instruments Inc

    Atlas STC → DRS ↗

  • 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.

    Atlas STC → DRS ↗

  • 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.

    Atlas STC → DRS ↗

  • 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.

    Atlas STC → DRS ↗

  • 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.

    Atlas STC → DRS ↗

  • 11/26/2001

    STC SA3767WE

    Installation of 500 gallon fiberglass hopper and relocated oil cooler. (S2R RESTRICTED CATEGORY)

    Quality Aerospace, Inc.

    Atlas STC → DRS ↗

+ 73 more STCs on file

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for AYRES CORPORATION S2R-R1820

05 /  Aircraft of this type

All 5 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.

5 of 5
N-number St Year NTSB FAA
N1663S ND 1981 · Look up ↗
N2530B MI — ● Look up ↗
N4025P OH 1981 ● Look up ↗
N510DK ND 1981 · Look up ↗
N751WC SD 1989 · Look up ↗

Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)

05 /  Sources & Methodology

Every count traces back to a primary US-government source

We render counts and lists as the agency publishes them. Read the methodology →