# Ayres S2R-R1820

- Type: Aircraft model (FAA registry)
- Registry codes: 0970215, 0970203
- Manufacturer (registry): AYRES CORPORATION
- Model: S2R-R1820
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 1
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS A4SW](https://openairdocs.org/tcds/A4SW) (OpenAirDocs)
- Holder: Thrush Aircraft LLC
- Registered aircraft: 5
- Page: https://openairdocs.org/model/ayres-s2r-r1820

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2009-26-11](https://openairdocs.org/ad/2009-26-11): Spar caps · Thrush 600 S-2D, S-2R, S2R-G1 and 13 more. Effective Feb 24, 2010
- [AD 2007-26-01](https://openairdocs.org/ad/2007-26-01): Vertical and horizontal stabilizer · Thrush S-2R, S2R-G1, S2R-G10 and 12 more. Effective Jan 22, 2008
- [AD 2000-05-23](https://openairdocs.org/ad/2000-05-23): Main Landing Gear Fuselage Attach Bolt · Thrush S-2R, S2R-G1, S2R-G10 and 12 more. Effective May 5, 2000
- [AD 93-20-06](https://openairdocs.org/ad/93-20-06): Outboard Wing Huckbolts · Thrush 600 S-2D, S-2R, S2R-R1340 and 6 more. Effective Dec 3, 1993
- [AD 93-20-05](https://openairdocs.org/ad/93-20-05): Vertical Tail Attachment Bracket · Thrush S-2R, S2R-G10, S2R-G6 and 9 more. Effective Dec 3, 1993
- [AD 93-01-03](https://openairdocs.org/ad/93-01-03): Wing Front Spar · Thrush 600 S-2D, S-2R, S2R-G6 and 9 more. Effective Feb 5, 1993
- [AD 84-09-03](https://openairdocs.org/ad/84-09-03): Fuselage Upper Longerons · Thrush S2R-R1820. Effective Sep 21, 1984

Historical (superseded or no longer in force):

- [AD 2006-07-15](https://openairdocs.org/ad/2006-07-15) (historical): Lower wing spar caps · Thrush S-2R, S2R-G1, S2R-G10 and 12 more. Effective Apr 18, 2006
- [AD 2000-11-16](https://openairdocs.org/ad/2000-11-16) (historical): Lower Spar Caps · Thrush 600 S-2D, S-2R, S2R-G1 and 13 more. Effective Jul 25, 2000
- [AD 97-17-03](https://openairdocs.org/ad/97-17-03) (historical): Lower Spar Cap Bolt Hole Areas · Ayres 600 S-2D, S-2R, S2R-G1 and 12 more. Effective Sep 5, 1997
- [AD 97-13-11](https://openairdocs.org/ad/97-13-11) (historical): Lower Spar Cap Bolt Hole Areas · Ayres 600-S-2C, S-2R, S2R-G1 and 12 more. Effective Jul 23, 1997

## Information bulletins (advisory) (1)

- [SAIB AIR-22-04](https://openairdocs.org/saib/AIR-22-04): Emergency Exits. Issued Mar 14, 2022

## Registered aircraft (5)

- [N1663S](https://openairdocs.org/aircraft/N1663S): [Slater Richard J](https://openairdocs.org/faa-owner/SLATER%20RICHARD%20J), [Maddock, ND](https://openairdocs.org/faa-place/ND/Maddock), built 1981, S/N R1820-013DC
- [N2530B](https://openairdocs.org/aircraft/N2530B): [Slf Air LLC](https://openairdocs.org/faa-owner/SLF%20AIR%20LLC), [Bannister, MI](https://openairdocs.org/faa-place/MI/Bannister), S/N R1820006DC
- [N4025P](https://openairdocs.org/aircraft/N4025P): [Bob Ruhe Ag Service LLC](https://openairdocs.org/faa-owner/BOB%20RUHE%20AG%20SERVICE%20LLC), [Leipsic, OH](https://openairdocs.org/faa-place/OH/Leipsic), built 1981, S/N R1820-018DC
- [N510DK](https://openairdocs.org/aircraft/N510DK): [Augustin Don M](https://openairdocs.org/faa-owner/AUGUSTIN%20DON%20M), [Crystal, ND](https://openairdocs.org/faa-place/ND/Crystal), built 1981, S/N R1820007DC
- [N751WC](https://openairdocs.org/aircraft/N751WC): [Valley Spraying Service LLC](https://openairdocs.org/faa-owner/VALLEY%20SPRAYING%20SERVICE%20LLC), [Gann Valley, SD](https://openairdocs.org/faa-place/SD/Gann%20Valley), built 1989, S/N R1820033

## NTSB investigations (9)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB MIA95LA024](https://openairdocs.org/ntsb/MIA95LA024), Nov 21, 1994: Ayres S2R-R1820 (N3097B), Arcadia, FL, destroyed. Probable cause: FAILURE OF THE ENGINE DUE TO A UNDETERMINED FAILURE IN THE ENGINE POWER SECTION.
- [NTSB SEA94LA136](https://openairdocs.org/ntsb/SEA94LA136), Jun 2, 1994: Ayres S2R (N8542), Burley, ID, substantial damage. Probable cause: A LOOSE CARBURETOR. FACTORS INCLUDE NO SUITABLE TERRAIN FOR MAKING A FORCED LANDING, AND TREES IN THE FIELD WHERE THE FORCED LANDING TOOK PLACE.
- [NTSB LAX94FA165](https://openairdocs.org/ntsb/LAX94FA165), Mar 16, 1994: Ayres S-2R (N40237), Reno, NV, destroyed, 2 fatal. Probable cause: AN UNDETERMINED PROBLEM WITH THE ENGINE OIL SYSTEM, A DECISION TO FLY THE AIRPLANE WITH A KNOWN DEFICIENCY, AND PROGRESSIVE (PARTIAL) FAILURE OF THE ENGINE MASTER ROD AND BEARING.
- [NTSB ATL90DKG05](https://openairdocs.org/ntsb/ATL90DKG05), Aug 4, 1990: Ayres Bull Thrush (N4025Q), Americus, GA, destroyed. Probable cause: FAILURE OF THE ENGINE MAIN OIL LINE WHICH ALLOWED THE ENGINE OIL TO BE IGNITED BY THE HOT ENGINE.
- [NTSB FTW87LA114](https://openairdocs.org/ntsb/FTW87LA114), May 7, 1987: Ayres S2R-1820 (N4025P), Ville Platte, LA, substantial damage
- [NTSB LAX86FVA12](https://openairdocs.org/ntsb/LAX86FVA12), Jul 22, 1986: Ayres S2R (N4023S), Tranquility, CA, destroyed, 1 fatal
- [NTSB MIA86FA185](https://openairdocs.org/ntsb/MIA86FA185), Jun 18, 1986: Ayres S2R-1820 (N4023P), Dundee, MS, destroyed, 1 fatal
- [NTSB CHI83LA392](https://openairdocs.org/ntsb/CHI83LA392), Aug 23, 1983: Ayres S2R-R1820 (N4025R), Essexville, MI, destroyed
- [NTSB FTW83LA277](https://openairdocs.org/ntsb/FTW83LA277), Jun 14, 1983: Ayres S2R-1820 (N4025P), Ville Platte, LA, substantial damage

## FAA accident and incident reports (11)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20140624011809I](https://openairdocs.org/incident/20140624011809I), Jun 24, 2014: Ayres Corporation S2R-R1820 (N279MJ), Monterey, LA, Minor damage. During takeoff roll about 60-70 knots the right landing gear collapsed, the takeoff was aborted. Minor damage to the aircraft. No injuries to the pilot.
- [Accident 19941121038689A](https://openairdocs.org/incident/19941121038689A), Nov 21, 1994: Ayres S2RR1820 (N3097B), Arcadia, FL, Destroyed. Engine quit on spray runway with loud bang. Struck trees. Engine siezed was destroyed by fire.
- [Accident 19940602013419A](https://openairdocs.org/incident/19940602013419A), Jun 2, 1994: Ayres S2RR1820 (N8542), Burley, ID, Substantial damage. Lost power end spray run. Hit treeline on forced landing. Carburetor mount bolts came loose. Leaned engine.
- [Accident 19940316005509A](https://openairdocs.org/incident/19940316005509A), Mar 16, 1994: Ayres S2RR1820 (N40237), Reno, NV, Destroyed, 2 fatal. Prior stop trk due high oil temp and low pressure. Elected ferry to base. Lost power. Hit wires. Worn master rod.
- [Accident 19900804033729A](https://openairdocs.org/incident/19900804033729A), Aug 4, 1990: Ayres S2RR1820 (N4025Q), Americus, GA, Destroyed. Smelled burning rubber on spray run,returned to base. Fire erupted landing. Rubber oil line burst,leaked on exhaust
- [Incident 19890314016699I](https://openairdocs.org/incident/19890314016699I), Mar 14, 1989: Ayres S2RR1820 (N40247), Willock, AZ, Minor damage. Hit a dirt embankment on edge of landing strip during landing roll. Blamed a dust devil for the event.
- [Accident 19870507014049A](https://openairdocs.org/incident/19870507014049A), May 7, 1987: Ayres S2RR1820 (N4025P), Ville Platte, LA, Substantial damage. Unable to stop on wet agricultural strip. Ran off end of runway. Collided with two trees.
- [Accident 19860722035369A](https://openairdocs.org/incident/19860722035369A), Jul 22, 1986: Ayres S2RR1820 (N4023S), Tranquility, CA, Destroyed. Crashed, burned after pull up from spray run. Witnesses heard a pop and saw aircraft spin as turn lights rotated.
- [Accident 19860618031649A](https://openairdocs.org/incident/19860618031649A), Jun 18, 1986: Ayres S2RR1820 (N4023P), Dundee, MS, Destroyed. Engine failed inflight from fuel exhaustion. Pilot attempted a steep turn at low altitude. Aircraft struck ground.
- [Accident 19830823044989A](https://openairdocs.org/incident/19830823044989A), Aug 23, 1983: Ayres S2RRESTD (N4025R), Essex, MI, Destroyed. Aircraft hit wires and crashed during spraying operation.
- [Accident 19830614025139A](https://openairdocs.org/incident/19830614025139A), Jun 14, 1983: Ayres S2RR1820 (N4025P), Ville Platte, LA, Substantial damage. Power failure occurred during takeoff causing collision with a 2 foot tall levee.

## Service difficulty reports (4)

As reported by operators and repair stations, by the model named in the report.

- [SDR CA120213009](https://openairdocs.org/sdr/CA120213009), Jan 20, 2012: ENGINE. POWER LOSS. (CAN) DURING CLIMB, THE ACFT LOSS ENGINE POWER AND THE PILOT MADE A FORCED LANDING INTO A FIELD. THE ACFT SUSTAINED SUBSTANTIAL DAMAGE. NO INVESTIGATION WAS REP
- [SDR CA060504005](https://openairdocs.org/sdr/CA060504005), Apr 21, 2006: BATTERY. UNSERVICEABLE. (CAN) FOUND CORROSION AROUND BATTERY. (TC NR 20060504005)
- [SDR AU980582](https://openairdocs.org/sdr/AU980582), May 29, 1998: SPAR CAP. CRACKED. (AUS) LT WING LOWER SPAR CAP CRACKED AT SPLICE ATTACHMENT BOLT HOLE.
- [SDR 96ZZZX1112](https://openairdocs.org/sdr/96ZZZX1112), Jan 30, 1996: RUDDER. CRACKED. INSPECTION FOUND CRACKED UPPER RUDDER HINGE AT SPAR WEB AND ALL DOUBLERS. RIB ALSO BROKEN. SUBMITTER STATED RUDDER SPAR BEEF-UP NECESSARY TO PREVENT CRACKING.

## STCs that may be installed (OpenAirDocs) (65, first 50)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC
- [STC SA1734SO](https://openairdocs.org/stc/SA1734SO): Installation of new design tail wheel. ABI LLC
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc
- [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc
- [STC SA7965SW](https://openairdocs.org/stc/SA7965SW): Application of fabric and polyurethane finishing system. Shady Aviation LLC
- [STC SA04568CH](https://openairdocs.org/stc/SA04568CH): Installation of the uAvionix tailBeaconX, a tail mounted position light with integrated Automatic Dependent Surveillance - Broadcast (ADS-B) Out and 1090MHz Mode-S transponder functionality. uAvionix Corporation
- [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc
- [STC SA02266SE](https://openairdocs.org/stc/SA02266SE): Installation of a Lever Throttle Quadrant. Kawak Aviation Technologies Inc
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC
- [STC SA02499SE](https://openairdocs.org/stc/SA02499SE): Installation of a Pratt & Whitney PT6A-41, PT6A-42, or PT6A-42A engine and a Avia V508H/106B/A propeller. Cascade Aircraft conversions LLC
- [STC SA02265SE](https://openairdocs.org/stc/SA02265SE): Installation of a camera housing. Airborne Sensor LLC
- [STC SA00410BO](https://openairdocs.org/stc/SA00410BO): Installation of an AV-30-C Multi-Mode Indicator. uAvionix Corporation
- [STC SA04401CH](https://openairdocs.org/stc/SA04401CH): Replace existing Engine Mount with Aero Innovations, LLC., Extended Engine Mount on certain Thrush S2R series aircraft fitted with PWC turboprop engine. Aero Innovations LLC
- [STC ST03197CH](https://openairdocs.org/stc/ST03197CH): To install full swiveling locking tail wheel assembly onto the existing spring steel tail gear. Turbine Conversions Ltd
- [STC SA5190NM](https://openairdocs.org/stc/SA5190NM): Installation of Gustin Aviation chip detector light system. A & L Aircraft Parts Inc
- [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc
- [STC SA00344BO PAGE 2](https://openairdocs.org/stc/SA00344BO%20PAGE%202): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SA01323CH](https://openairdocs.org/stc/SA01323CH): Installation of a ground single point fueling system. Turbine Conversions Ltd
- [STC SA00902CH](https://openairdocs.org/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 Conversions Ltd. Drawing List, Report WAL2000, Revision A, dated March 4, 2005, or later approved revision. Turbine Conversions Ltd
- [STC SA01420SE](https://openairdocs.org/stc/SA01420SE): Install a Walter M601-E11 or M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Aircraft Conversions Master Drawing List FW-CAC090-90 Revision B, dated August 10, 2004, and Cascade Aircraft Conversions Document FW-CAC090-12, Revision IR, dated June 2, 2004, Installation Manual for Thrush Aircraft S2R Series, Walter Turbine Installation or later FAA approved revisions to either of these documents. Cascade Flying Service LLC
- [STC SA02205SE](https://openairdocs.org/stc/SA02205SE): Installation of a replacement airframe fuel pump in accordance with Cascade Flying Service Master Drawing List FW-CFS545-90, Rev. B, dated October 19, 2011, or later FAA approved revision. Cascade Aircraft conversions LLC
- [STC SA02212AK](https://openairdocs.org/stc/SA02212AK): Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems. Seaplanes North LLC
- [STC SA01845WI](https://openairdocs.org/stc/SA01845WI): Installation of a Center Windshield. Hershey Flying Services
- [STC SA02428SE](https://openairdocs.org/stc/SA02428SE): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft. Henry F Rogers/David E Polley
- [STC SA02276AK](https://openairdocs.org/stc/SA02276AK): Installation of AMSAFE Aviation Inflatable Restraints. AMSAFE Inc
- [STC SA03518AT](https://openairdocs.org/stc/SA03518AT): Installation of a bonded doubler inside the wing leading edge. Turbine Conversions Ltd
- [STC SA1864SO](https://openairdocs.org/stc/SA1864SO): Installation of aluminum skins on the horizontal tail. Aero Innovations LLC
- [STC SA1865SO](https://openairdocs.org/stc/SA1865SO): Installation of aluminum skins on the horizontal tail. Aero Innovations LLC
- [STC SA02442AK PAGE 2](https://openairdocs.org/stc/SA02442AK%20PAGE%202): Approval of the L-3 Communications NGT 2000/2500 ADS-B system. ADS-B Technologies, LLC
- [STC SA00580SE](https://openairdocs.org/stc/SA00580SE): Installation of winglets. Aero Spraying Service Inc
- [STC SA02283SE PAGE 2](https://openairdocs.org/stc/SA02283SE%20PAGE%202): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P. Electronics International Inc
- [STC ST03554CH](https://openairdocs.org/stc/ST03554CH): Installation of Rotary Gatekeeper and provisions equipment. Turbine Conversions Ltd
- [STC SA01011CH](https://openairdocs.org/stc/SA01011CH): Installation of under wing strap enhancer. AG Aviation Innovations
- [STC SA00172SE](https://openairdocs.org/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)/T10282+4 propeller. Valley Air Service Inc
- [STC SA00178SE](https://openairdocs.org/stc/SA00178SE): Installation of vortex generators on the wing and tail surfaces of the above model aircraft. Micro AeroDynamics Inc
- [STC SA02951CH](https://openairdocs.org/stc/SA02951CH): Installation of modified Wing Spar Splice and Cap per Aeronautix Modification Kit. Gulf Coast Ag Aircraft Sales and Maintenance
- [STC SA02985CH](https://openairdocs.org/stc/SA02985CH): Installation of a Cool Start System in accordance with Installation Instructions , Revision A, dated April 14, 2011, or later FAA Approved revision. Turbine Conversions Ltd
- [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc
- [STC SA01988SE](https://openairdocs.org/stc/SA01988SE): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P. Electronics International Inc
- [STC SA03654AT](https://openairdocs.org/stc/SA03654AT): Installation of Avenger Extended Performance Front Spar Enhancement Kit (new wing front spar lower capts, center splice and doublers). Avenger Aircraft and Services
- [STC SA00034SE](https://openairdocs.org/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
- [STC SA02247CH](https://openairdocs.org/stc/SA02247CH): Installation of Pheromone Distribution Pod System. Turbine Conversions Ltd
- [STC SA01158WI](https://openairdocs.org/stc/SA01158WI): Installation of Aero Enhancements UV250-1 Supplemental Instrument Panel Lightning System. Aero Enhancements Inc
- [STC SA01639NY](https://openairdocs.org/stc/SA01639NY): Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B. Scale Modelbuilders Inc
- [STC SA00622LA](https://openairdocs.org/stc/SA00622LA): Installation of an electronic digital engine tachometer horizon model P-1000. Horizon Instruments Inc

All 65: https://openairdocs.org/model/ayres-s2r-r1820/stcs.md

## PMA parts (OpenAirDocs) (190, first 50)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first.

- [CA84106-05-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147882275020260722173256.0001): Cover. ABI LLC · PMA PQ4204CE · Modification part · Jul 20, 2026
- [CA84106-02-101](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136915721920260722173255.0001): Tailwheel Assembly. ABI LLC · PMA PQ4204CE · Modification part · Jul 20, 2026
- [CA84106-05-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122830524720260722173256.0001): Spacer. ABI LLC · PMA PQ4204CE · Modification part · Jul 20, 2026
- [CA84106-03-101](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106335731620260722173255.0001): Tailwheel Frame Weld Assembly. ABI LLC · PMA PQ4204CE · Modification part · Jul 20, 2026
- [066-001](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183229885320260723131537.0001): Rivet. Game Aerospace, LLC · PMA PQ00052CB · Replaces Cleveland Wheels and Brakes P/N… · Jun 9, 2026
- [066-108](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151292370120260728151446.0001): Brake Lining. Game Aerospace, LLC · PMA PQ00052CB · Replaces Cleveland Wheels and Brakes P/N… · Jun 9, 2026
- [APS067-03700](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194902749120260313134747.0001): Axle Spacer. Airforms LLC · PMA PQ2644CE · Replaces 067-03700 · Mar 9, 2026
- [APS158-01300](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190178321720260313134750.0001): Hub Cap. Airforms LLC · PMA PQ2644CE · Replaces 158-01300 · Mar 9, 2026
- [APS214-00700](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189423105420260313134745.0001): Cup-Bearing. Airforms LLC · PMA PQ2644CE · Replaces 214-00700, 19268-20629 · Mar 9, 2026
- [APS161-06200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188461569820260313134742.0001): Inner Wheel Half. Airforms LLC · PMA PQ2644CE · Replaces 161-06200 · Mar 9, 2026
- [APS40-133](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169414398520260313134741.0001): 29X11.0-10 Wheel Assy. Airforms LLC · PMA PQ2644CE · Replaces 40-133 · Mar 9, 2026
- [APS162-05800](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149125643320260313134744.0001): Outer Wheel Half. Airforms LLC · PMA PQ2644CE · Replaces 162-05800 · Mar 9, 2026
- [APS155-04400](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145487911120260313134749.0001): Snap Ring. Airforms LLC · PMA PQ2644CE · Replaces 155-04400 · Mar 9, 2026
- [APS214-03000](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127774418020260313134743.0001): Cup-Bearing. Airforms LLC · PMA PQ2644CE · Replaces 214-03000, 18337-20629 · Mar 9, 2026
- [APS067-03500](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120653795920260313134747.0001): Spacer. Airforms LLC · PMA PQ2644CE · Replaces 067-03500 · Mar 9, 2026
- [APS214-03100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119088576120260313134744.0001): Cone-Bearing. Airforms LLC · PMA PQ2644CE · Replaces 214-0310018200-20629 · Mar 9, 2026
- [APS154-13800](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118032037120260313134748.0001): Grease Seal. Airforms LLC · PMA PQ2644CE · Replaces 154-13800 · Mar 9, 2026
- [APS155-04500](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116929688720260313134750.0001): Snap Ring. Airforms LLC · PMA PQ2644CE · Replaces 155-04500 · Mar 9, 2026
- [APS214-00800](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113684844920260313134746.0001): Cone-Bearing. Airforms LLC · PMA PQ2644CE · Replaces 214-00800, 19150-20629 · Mar 9, 2026
- [MDL TD 031851](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173772320220250508133550.0001): VA-1A( )AndAccessories. Electronics International Inc · PMA PQ0088NM · Modification part · Apr 10, 2025
- [10003A](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117556060920250303152541.0001): Air-Oil Cooler. Boyd Niagara LLC · PMA PQ0872NE · Replaces 8538233 · Oct 30, 2024
- [APS105-00200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199481671120221020170410.0001): Rivet. Aviation Products Systems Inc · PMA PQ3830CE · Replaces 105-00200 · Aug 10, 2022
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163725970820220706160226.0001): Whelen Aerospace Technologies · PMA PQ1372CE · Jun 21, 2022
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID292623867320210622142531.0001): AeroLEDs LLC · PMA PQ5259NM · Mar 11, 2021
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID312455283620210702175247.0001): Aspen Avionics · PMA PQ03868SW · Jan 20, 2021
- [9100-001-C](https://drs.faa.gov/browse/excelExternalWindow/DD343890DCD8BFDB86258569004013FB.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-D](https://drs.faa.gov/browse/excelExternalWindow/C7B6725B325949E98625856900401478.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9200-000-B](https://drs.faa.gov/browse/excelExternalWindow/BD58B0712CA0C6AA86258569004016AD.0001): MaxPulse Landing Light Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-G](https://drs.faa.gov/browse/excelExternalWindow/ADE62C91D97E8B788625856900401557.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-E](https://drs.faa.gov/browse/excelExternalWindow/A37F050253EE808A86258569004014BA.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9200-000-A](https://drs.faa.gov/browse/excelExternalWindow/8E10EF4D973C1D6D8625856900401662.0001): MaxPulse Landing Light Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-A](https://drs.faa.gov/browse/excelExternalWindow/62DC748A2B9B1D9386258569004012FD.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-F](https://drs.faa.gov/browse/excelExternalWindow/3746AAB4CC0D6883862585690040151B.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-B](https://drs.faa.gov/browse/excelExternalWindow/32446D71EB78157686258569004013B2.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [9100-001-H](https://drs.faa.gov/browse/excelExternalWindow/1AEB415100FB45D8862585690040159F.0001): MaxDim Lamp Intensity Controller. Seaton Engineering Corporation · PMA PQ2574NM · Modification part · Sep 3, 2019
- [01-0771833-20](https://drs.faa.gov/browse/excelExternalWindow/FFF505DF238D9E3E86258557004EB967.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · May 30, 2019
- [01-0771833-25](https://drs.faa.gov/browse/excelExternalWindow/D17366A21258BFC186258557004EB9A2.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · May 30, 2019
- [01-0771833-10](https://drs.faa.gov/browse/excelExternalWindow/D0F0E113B870DF1C86258557004EB8E0.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · May 30, 2019
- [01-0771833-15](https://drs.faa.gov/browse/excelExternalWindow/CB6A5B42DF6A574686258557004EB925.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · May 30, 2019
- [01-0790750-10](https://drs.faa.gov/browse/excelExternalWindow/8FBCEA35A3837D6386258557004EB9D7.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · May 30, 2019
- [01-0790750-20](https://drs.faa.gov/browse/excelExternalWindow/5919E033D600DA3386258557004EBA0C.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · May 30, 2019
- [TH 1000](https://drs.faa.gov/browse/excelExternalWindow/F43CF87E9199D93F86258295006CFC77.0001): Thrush GEAC Conversion Installation. Cascade Aircraft Conversions LLC · PMA PQ2352NM · Modification part · Mar 28, 2018
- [87-05208-001](https://drs.faa.gov/browse/excelExternalWindow/C4B8A8A2B2422B728625822E007853B6.0001): Assembly, Light, PAR 46 Landing. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0790750-20 · Jan 23, 2018
- [10003A](https://drs.faa.gov/browse/excelExternalWindow/6AFDBFF897DA1203862581B5006B5846.0001): Air-Oil Cooler. Aavid Niagara LLC · PMA PQ0872EA · Replaces 8538233 · Oct 1, 2017
- [10003A](https://drs.faa.gov/browse/excelExternalWindow/5B27ED6819A40862862581B5006B5E1B.0001): Air-Oil Cooler. Aavid Niagara LLC · PMA PQ0872EA · Replaces 8538233 · Oct 1, 2017
- [W-10692-3](https://drs.faa.gov/browse/excelExternalWindow/E02188412CA16ABD862581B80057E955.0001): Center Windshield. Hershey Flying Service, Inc. · PMA PQ3431CE · Modification part · Sep 24, 2017
- [87-05207-002](https://drs.faa.gov/browse/excelExternalWindow/4BE4BA39295AB01E862581760058C64D.0001): Assembly, Light, PAR 36 Taxi. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0771833-25 · Aug 1, 2017
- [87-05207-001](https://drs.faa.gov/browse/excelExternalWindow/4ACD6BDF5990D9C7862581760058C571.0001): Assembly, Light, PAR 36 Landing. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0771833-20 · Aug 1, 2017
- [THP 1000-01](https://drs.faa.gov/browse/excelExternalWindow/F4677A73C497FDD88625808F005D1676.0001): Installation, Conversion PT-6A-41/42. Cascade Aircraft Conversions LLC · PMA PQ2352NM · Modification part · Nov 9, 2016
- [01-0771833-20](https://drs.faa.gov/browse/excelExternalWindow/C4A392C20DA3333A86257FCC006EBC03.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Apr 20, 2016

All of them: https://openairdocs.org/model/ayres-s2r-r1820/pma.md

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