Engines · piston (reciprocating) · data as of October 5, 2026

Pratt & Whitney R1340 series

1,230 aircraft on the U.S. register carry a Pratt & Whitney R1340 series engine, rated at about 600 horsepower. The North American AT-6 Texan is the model most often fitted with it (183 aircraft). The aircraft carrying it were built between 1933 and 2022.

The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Pratt & Whitney R1340 series. FAA spelling: R1340 SERIES.

Fitted to model families

North American AT-6 Texan183Grumman Acft Eng Cor-Schweizer G-164149North American SNJ-5 Texan (Navy)118North American T-6 Texan92Air Tractor Inc AT-30166Aero Commander S255Rockwell International S-254Air Tractor Inc AT-40152Ayres Corporation S-248Canadian Car & Foundry HARVARD MK IV43Schweizer Aircraft Corp G-16441North American SNJ-436

North American AT-6 Texan · Grumman Acft Eng Cor-Schweizer G-164 · North American SNJ-5 Texan (Navy) · North American T-6 Texan · Air Tractor Inc AT-301 · Aero Commander S2 · Rockwell International S-2 · Air Tractor Inc AT-401 · Ayres Corporation S-2 · Canadian Car & Foundry HARVARD MK IV

Where they are owner's state

California174Texas154Washington52North Dakota50Delaware46Minnesota43Nebraska39Florida36Colorado34Illinois33

Kind of aircraft

Piston singles1,136 (92%)Turboprops75 (6%)Piston twins17 (1%)Helicopters2 (0.2%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Pratt & Whitney R1340 series the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 58 failure reports with the FAA since 1995, 15 of them in the last ten years.

Failure reports 58 since · what operators and shops told the FAA

Parts most often reported as the reports name them

Cylinder6Engine4Cylinder Head3Exhaust Valve3Nut3Attach Angle2Roller2Strut2Angle1Battery1

Latest reports

2018-08-02Throttle Arm: worn

2015-05-19Cam: worn

2014-08-24Cylinder: fractured

2014-07-28Engine: power loss

2013-04-24Bearing: failed

Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.

Connections how this engine series links to the rest of the register

Fitted to

North American AT-6 Texan 183 with this engine series
Grumman Acft Eng Cor-Schweizer G-164 149 with this engine series
North American SNJ-5 Texan (Navy) 118 with this engine series
North American T-6 Texan 92 with this engine series
Air Tractor Inc AT-301 66 with this engine series
Aero Commander S2 55 with this engine series
Rockwell International S-2 54 with this engine series
Air Tractor Inc AT-401 52 with this engine series

Where they are

California 174 of these aircraft
Texas 154 of these aircraft
Washington 52 of these aircraft
North Dakota 50 of these aircraft
Delaware 46 of these aircraft

Biggest operators

Hershey Flying Service INC 11 of these aircraft
American Airpower Heritage Flying Museum 10 of these aircraft
Mid Continent Aircraft CORP 8 of these aircraft
Johnson Airspray INC 8 of these aircraft
American Airpower Heritage Flying Museum INC 8 of these aircraft

Airworthiness

Failure reports on the Pratt & Whitney R1340 series 58 reports since 1995

Analytics

These connections as data: /graph/engine/pratt-whitney-r1340-series.json · about the eFlight graph.

Aircraft newest certificates first · 1,230

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N92796	North American AT-6G	Fixed-wing, single engine	Victor 5 Equipment LLC Atlanta, Georgia	Standard	2022-04-26	Valid
N299SF	North American SNJ-6	Fixed-wing, single engine	Individual owner Tennessee	Standard	2022-04-23	Valid
N4193X	Rockwell International S-2R	Fixed-wing, single engine	Country Air Service INC Hecla, South Dakota	Restricted	2022-04-23	Valid
N113BT	Consolidated Vultee BT-13A	Fixed-wing, single engine	American Airpower Heritage Flying Museum Dallas, Texas	Standard	2022-04-16	Valid
N9136	Snow 600-S2C	Fixed-wing, single engine	Individual owner South Dakota	Restricted	2022-04-15	Valid
N63RB	North American AT-6D	Fixed-wing, single engine	Condor Squadron Officers & Airmens Association Van Nuys, California	Standard	2022-04-05	Valid
N10298	Grumman G-164	Fixed-wing, single engine	Coen Aerial Spraying LLC Wiley, Colorado	Restricted	2022-03-29	Valid
N3094U	Ayres Corporation S2R-R1340	Fixed-wing, single engine	Larson AG INC Stephen, Minnesota	Restricted	2022-03-28	Valid
N5047X	Ayres Corporation S-2R	Fixed-wing, single engine	Bain Aviation INC Weiser, Idaho	Restricted	2022-03-25	Valid
N8426V	Rockwell International S-2R	Fixed-wing, single engine	Earls Spray Service INC Breckenridge, Michigan	Restricted	2022-03-25	Valid
N56747	Boeing D75N1	Fixed-wing, single engine	Individual owner Wisconsin	Restricted	2022-03-02	Valid
N158JZ	North American T-6G	Fixed-wing, single engine	Acv Group LLC Mckinleyville, California	Standard	2022-02-22	Valid
N67003	North American SNJ-4	Fixed-wing, single engine	Mid-Atlantic Aircraft Leasing LLC Wilmington, Delaware	Standard	2022-01-14	Valid
N101NZ	North American AT-6D	Fixed-wing, single engine	Co-owned owner Texas	Standard	2022-01-13	Valid
N77398	Canadian Car & Foundry HARVARD MK IV	Fixed-wing, single engine	Individual owner California	Experimental	2022-01-08	Valid
N7355	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Individual owner California	Restricted	2021-12-23	Valid
N22NA	North American T-6G	Fixed-wing, single engine	Individual owner Illinois	Standard	2021-12-11	Valid
N87613	North American SNJ-2	Fixed-wing, single engine	Doggett Jack e JR Kingwood, Texas	Standard	2021-11-27	Valid
N8508V	Rockwell International S-2R	Fixed-wing, single engine	Cat-Ag Aviation LLC Madras, Oregon	Restricted	2021-11-18	Valid
N121DV	Soko Factory Yogoslavia TYPE 522	Fixed-wing, single engine	Individual owner Florida	Experimental	2021-11-13	Valid
N6827K	Grumman Acft Eng Cor-Schweizer G-164B	Fixed-wing, single engine	Breslin Air Dusting and Spraying Service LLC Edgewood, New Mexico	Restricted	2021-10-30	Valid
N5511X	Aero Commander S2R	Fixed-wing, single engine	Bruces Flying Service INC Arlington, Georgia	Restricted	2021-10-26	Valid
N7070C	North American SNJ-4	Fixed-wing, single engine	Del AG Aero LLC Milton, Delaware	Standard	2021-10-26	Valid
N6565	Grumman G-164A	Fixed-wing, single engine	AG Air INC Raceland, Louisiana	Restricted	2021-10-14	Valid
N8804Q	Rockwell International S-2R	Fixed-wing, single engine	Ultra AG Cropdusters LLC Le Mars, Iowa	Restricted	2021-10-12	Valid
N600MF	North American SNJ-5	Fixed-wing, single engine	N44Af LLC Oconomowoc, Wisconsin	Standard	2021-10-06	Valid
N1466	Canadian Car & Foundry HARVARD MK IV	Fixed-wing, single engine	Withheld at owner's request	Experimental	2021-09-30	Valid
N8386	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Hershey Flying Service INC David City, Nebraska	Restricted	2021-09-30	Valid
N1546U	Air Tractor Inc AT-401	Fixed-wing, single engine	Individual owner Minnesota	Restricted	2021-09-28	Valid
N7130C	North American SNJ-5	Fixed-wing, single engine	Warpiggs LLC Klamath Falls, Oregon	Experimental	2021-09-24	Valid
N47217	Canadian Car & Foundry HARVARD MK IV	Fixed-wing, single engine	Individual owner Wisconsin	Experimental	2021-09-22	Valid
N273Y	Younkin J R REPLICA HOWARD DGA-6	Fixed-wing, single engine	Planelease LLC Mason City, Iowa	Experimental	2021-09-21	Valid
N3286	North American SNJ-5	Fixed-wing, single engine	Eastern Stearman INC Trustee Leesburg, Virginia	Standard	2021-09-16	Valid
N8215E	North American SNJ-5	Fixed-wing, single engine	Individual owner Tennessee	Standard	2021-09-13	Valid
N9727	Fairchild 71	Fixed-wing, single engine	Individual owner Tennessee	Standard	2021-09-10	Valid
N9827	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Ce Air INC Argyle, Iowa	Restricted	2021-08-25	Valid
N777BT	Canadian Car & Foundry HARVARD MK IV	Fixed-wing, single engine	Individual owner Illinois	Experimental	2021-08-21	Valid
N3627B	Schweizer Aircraft Corp G-164B	Fixed-wing, single engine	Air Enterprises LLC Dover, Delaware	Restricted	2021-08-19	Valid
N8483K	Schweizer Aircraft Corp G-164B	Fixed-wing, single engine	Air Enterprises LLC Dover, Delaware	Restricted	2021-08-19	Valid
N257DB	North American-Buehn T-6G	Fixed-wing, single engine	Kestrel Warbird Experience LLC Dayton, Ohio	Standard	2021-08-16	Valid
N2386W	Air Tractor Inc AT-301	Fixed-wing, single engine	Whitten Flying Service Equipment LLC Snook, Texas	Restricted	2021-08-10	Valid
N3169U	Air Tractor Inc AT-301	Fixed-wing, single engine	Whitten Flying Service Equipment LLC Snook, Texas	Restricted	2021-08-10	Valid
N46SL	North American AT-6C	Fixed-wing, single engine	American Airpower Heritage Flying Museum Dallas, Texas	Standard	2021-08-06	Valid
N450TC	Boeing A75N1(PT17)	Fixed-wing, single engine	Newman Brian A Caldwell, Idaho	Restricted	2021-07-31	Valid
N991VR	North American SNJ-5	Fixed-wing, single engine	Individual owner Texas	Standard	2021-07-24	Valid
N5058X	Ayres Corporation S-2R	Fixed-wing, single engine	Versaair Services LLC Manhattan, Kansas	Restricted	2021-07-22	Valid
N98FP	North American AT-6G	Fixed-wing, single engine	Need 4 Speed LLC Waunakee, Wisconsin	Standard	2021-07-22	Valid
N4503B	North American AT-6F	Fixed-wing, single engine	Collings Foundation INC DBA Hudson, Massachusetts	Standard	2021-07-20	Valid
N6613K	Grumman Acft Eng Cor-Schweizer G-164B	Fixed-wing, single engine	Dc Applicator Brentwood, California	Restricted	2021-07-20	Valid
N6795K	Grumman Acft Eng Cor-Schweizer G-164B	Fixed-wing, single engine	Eckles Aircraft LLC Holdenville, Oklahoma	Restricted	2021-07-15	Valid
N8811Q	Aero Commander S2R	Fixed-wing, single engine	Randy Goering INC Bend, Oregon	Restricted	2021-07-13	Valid
N624BS	Ed Storo BRISTOL MK.IIA(R)	Fixed-wing, single engine	Individual owner Oregon	Experimental	2021-07-01	Valid
N6TF	North American SNJ-5	Fixed-wing, single engine	Co-owned owner California	Standard	2021-06-29	Valid
N817TX	North American AT-6D	Fixed-wing, single engine	Air Cav Helicopters LLC Wilmington, Delaware	Standard	2021-06-29	Valid
N56737	North American AT-6	Fixed-wing, single engine	Individual owner Oregon	Standard	2021-06-28	Valid
N16FF	North American SNJ-5	Fixed-wing, single engine	Co-owned owner California	Standard	2021-06-26	Valid
N4269E	North American Medore T-6G	Fixed-wing, single engine	Co-owned owner Nevada	Standard	2021-06-19	Valid
N626CC	North American SNJ-5	Fixed-wing, single engine	Classic Toy Barn LLC Central Islip, New York	Standard	2021-06-16	Valid
N7314R	Air Tractor Inc AT-501	Fixed-wing, single engine	Newberg Sky Spray LLC Hector, Minnesota	Restricted	2021-06-11	Valid
N7015N	Grumman American Avn. Corp. G-164B	Fixed-wing, single engine	Zumwalt Aviation LLC Sheldon, Illinois	Restricted	2021-06-10	Valid
N5545X	Rockwell International S-2R	Fixed-wing, single engine	Grand View Flying Service LLC Wilder, Idaho	Restricted	2021-06-08	Valid
N7404C	North American SNJ-4	Fixed-wing, single engine	Sanders Racing INC Jasper, Alabama	Standard	2021-05-28	Valid
N6627	Grumman G-164A	Fixed-wing, single engine	Richter Aviation INC Maxwell, California	Restricted	2021-05-26	Valid
N8454V	Rockwell International S-2R	Fixed-wing, single engine	Storm Spraying Service INC Webster City, Iowa	Restricted	2021-05-22	Valid
N60DJ	Canadian Car & Foundry HARVARD MK IV	Fixed-wing, single engine	N60Dj Latham, New York	Experimental	2021-05-15	Valid
N6421D	North American SNJ-4	Fixed-wing, single engine	Individual owner Alaska	Standard	2021-05-13	Valid
N319AP	North American AT-6D	Fixed-wing, single engine	N319Ap LLC Latham, New York	Standard	2021-05-10	Valid
N1043C	North American SNJ-5	Fixed-wing, single engine	Tigers Aviation LLC Wasilla, Alaska	Standard	2021-05-04	Valid
N2983	North American T-6G	Fixed-wing, single engine	Co-owned owner Pennsylvania	Standard	2021-05-04	Valid
N867DL	North American/Victoria Mnt Lt AT-6A	Fixed-wing, single engine	Individual owner Georgia	Standard	2021-04-26	Valid
N5486V	North American SNJ-5	Fixed-wing, single engine	Amigos T6 LLC Justin, Texas	Standard	2021-04-17	Valid
N3269G	North American SNJ-5	Fixed-wing, single engine	Individual owner California	Standard	2021-04-15	Valid
N7986C	North American SNJ-5	Fixed-wing, single engine	Individual owner Illinois	Experimental	2021-04-10	Valid
N9688	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Confederate Air INC Tillar, Arkansas	Restricted	2021-04-10	Valid
N9825C	North American SNJ-6B	Fixed-wing, single engine	Individual owner Illinois	Standard	2021-04-10	Valid
N8457V	Rockwell International S-2R	Fixed-wing, single engine	Souther Crop Spraying INC Douglas, Georgia	Restricted	2021-03-29	Valid
N269WB	North American-Maslon SNJ-4	Fixed-wing, single engine	Pilot Maker Airshows LLC Kansas City, Missouri	Standard	2021-03-22	Valid
N7366	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Ps Aviation INC Granada, Minnesota	Restricted	2021-03-22	Valid
N8960Q	Ayres Corporation S-2R	Fixed-wing, single engine	Inland Crop Dusters INC Shafter, California	Restricted	2021-03-16	Valid
N3360G	Boeing P-12E	Fixed-wing, single engine	Planes of Fame Air Museum Chino, California	Experimental	2021-03-09	Valid
N3378G	Boeing P26	Fixed-wing, single engine	Planes of Fame Air Museum Chino, California	Experimental	2021-03-09	Valid
N4549E	Air Tractor Inc AT-401	Fixed-wing, single engine	Vertical Vegetation Management LLC Darlington, Indiana	Restricted	2021-03-09	Valid
N75342	North American AT-6D	Fixed-wing, single engine	414Bh LLC Laramie, Wyoming	Standard	2021-03-03	Valid
N4539Y	Air Tractor Inc AT-401	Fixed-wing, single engine	Hylands Agricultural Services LLC Gretna, Nebraska	Restricted	2021-02-17	Valid
N30JF	North American SNJ-5	Fixed-wing, single engine	Case Craft LLC Euless, Texas	Multiple	2021-02-10	Valid
N59TS	Canadian Car & Foundry HARVARD MK IV	Fixed-wing, single engine	Individual owner	Standard	2021-02-10	Valid
N29933	North American AT-6G	Fixed-wing, single engine	Green Country Warbirds LLC Sapulpa, Oklahoma	Standard	2021-02-06	Valid
N8472V	Rockwell International S-2R	Fixed-wing, single engine	Individual owner New Mexico	Experimental	2021-02-01	Valid
N44972	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Co-owned owner Texas	Restricted	2021-01-25	Valid
N2861G	North American SNJ-6	Fixed-wing, single engine	N2861G LLC Dawson, Nebraska	Standard	2021-01-20	Valid
N5470	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Atlantic Wings LLC New Bern, North Carolina	Restricted	2021-01-20	Valid
N48374	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	AG Cat Applicators LLC Avoca, Texas	Restricted	2021-01-19	Valid
N8466V	Rockwell International S-2R	Fixed-wing, single engine	Sides Aviation LLC Cambridge, Nebraska	Restricted	2021-01-13	Valid
N45492	Air Tractor Inc AT-401	Fixed-wing, single engine	Woodley Aerial Leasing LLC Walnut, Illinois	Restricted	2021-01-12	Valid
N6865Q	Grumman Acft Eng Cor-Schweizer G-164A	Fixed-wing, single engine	Clifford Farmers Cooperative Elevator Clifford, North Dakota	Restricted	2020-12-30	Valid
N36269	Schweizer Aircraft Corp G-164B	Fixed-wing, single engine	Mcclung Aerial Spraying INC Big Springs, Nebraska	Restricted	2020-12-18	Valid
N6700K	Grumman Acft Eng Cor-Schweizer G-164B	Fixed-wing, single engine	Mcclung Aerial Spraying INC Big Springs, Nebraska	Restricted	2020-12-18	Valid
N3272G	North American SNJ-5	Fixed-wing, single engine	Air Safety Investigators LLC Nokomis, Florida	Standard	2020-12-05	Valid
N3647G	North American AT-6C	Fixed-wing, single engine	Individual owner Kansas	Standard	2020-11-30	Valid
N378DM	North American T-6G	Fixed-wing, single engine	Culater LLC Indianapolis, Indiana	Standard	2020-10-23	Valid

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.