The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 2026

Pratt & Whitney R-985 series

1,594 aircraft on the U.S. register carry a Pratt & Whitney R-985 series engine, rated at about 450 horsepower. The Boeing A75 Stearman Kaydet is the model most often fitted with it (236 aircraft). The aircraft carrying it were built between 1929 and 2013.

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 R-985 series. FAA spelling: R-985 SERIES.

When the aircraft were built by decade

By decade built, as a table
aircraft
192013
193063
1940622
1950318
1960114
1970105
198010
199033
20006
20102

What the FAA has certified, ordered and been told about the Pratt & Whitney R-985 series the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 80 failure reports with the FAA since 1995, 23 of them in the last ten years.

Failure reports 80 since · what operators and shops told the FAA

024689500051015217
Failure reports by year, as a table
reports
953
962
973
981
994
002
016
028
035
047
056
063
077
082
095
103
112
122
132
142
152
161
172

Parts most often reported as the reports name them

Cylinder8Engine6Bulkhead3Piston3Pump3Spar3Bearing2Bolt2Carburetor2Control Cable2
Parts most reported, as a table
reports
Cylinder8
Engine6
Bulkhead3
Piston3
Pump3
Spar3
Bearing2
Bolt2
Carburetor2
Control Cable2

Latest reports

2017-10-06Bearing: failed
2017-07-20Drag Link: damaged
2016-07-20Pushrod: broken
2015-08-18Fitting: corroded
2015-04-03Balance Weight: loose

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
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/pratt-whitney-r-985-series.json · about the eFlight graph.

Aircraft newest certificates first · 1,594

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N33621 Boeing
E75
Fixed-wing, single engine Individual owner
Maryland
Experimental 2020-01-21 ValidFAA registration status code V: Valid registration. All codes
N63549 Beech
D17S
Fixed-wing, single engine Individual owner
Texas
Standard 2020-01-16 ValidFAA registration status code V: Valid registration. All codes
N8950H Grumman Acft Eng Cor-Schweizer
G-164A
Fixed-wing, single engine Individual owner
Louisiana
Restricted 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N46CM Boeing
E75
Fixed-wing, single engine Individual owner
California
Experimental 2019-12-20 ValidFAA registration status code V: Valid registration. All codes
N985R Grumman
G-21A
Fixed-wing, multi-engine Collings Foundation INC DBA
Hudson, Massachusetts
Standard 2019-12-12 ValidFAA registration status code V: Valid registration. All codes
N4860N Boeing
E75
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-11-22 ValidFAA registration status code V: Valid registration. All codes
N2LU Gulfstream-Schweizer A/C Corp
GULFSTREAM AM G-164B
Fixed-wing, single engine Mowata Farms LLC
Mamou, Louisiana
Restricted 2019-11-14 ValidFAA registration status code V: Valid registration. All codes
N44902 Naval Aircraft Factory
N3N-3
Fixed-wing, single engine Morris Jennifer Houghton
Shelburne, Vermont
Standard 2019-11-13 ValidFAA registration status code V: Valid registration. All codes
N1341V Beech
D17S
Fixed-wing, single engine Individual owner
Texas
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N80312 Beech
G17S
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N9772Z Beech
C-45H
Fixed-wing, multi-engine City of Marshall
Marshall, Michigan
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N245M Beech
H-18
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-10-18 ValidFAA registration status code V: Valid registration. All codes
N13JC Beech
E18S
Fixed-wing, multi-engine Vintage Flying Museum INC
Fort Worth, Texas
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N20779 Beech
D17S
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-09-11 ValidFAA registration status code V: Valid registration. All codes
N109EJ Dehavilland Acft Canada Ltd
DHC-2
Fixed-wing, single engine Individual owner
Louisiana
Standard 2019-09-10 ValidFAA registration status code V: Valid registration. All codes
N13705 Lockheed
VEGA 5C
Fixed-wing, single engine Co-owned owner
California
Standard 2019-09-10 ValidFAA registration status code V: Valid registration. All codes
N5316N Boeing
E75
Fixed-wing, single engine Hawke AG Aviation INC
Oakdale, California
Restricted 2019-09-06 ValidFAA registration status code V: Valid registration. All codes
N377M Curtiss Wright
TRAVEL AIR A-6000-A
Fixed-wing, single engine Pleasant Aviation LLC
Mount Pleasant, Texas
Standard 2019-09-04 ValidFAA registration status code V: Valid registration. All codes
N53H Howard Aircraft
DGA-15P
Fixed-wing, single engine Individual owner
Colorado
Standard 2019-09-04 ValidFAA registration status code V: Valid registration. All codes
N7501V Bushmaster
2000
Fixed-wing, multi-engine Pleasant Aviation LLC
Mount Pleasant, Texas
Experimental 2019-09-04 ValidFAA registration status code V: Valid registration. All codes
N103G Beech
D18S
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-08-29 ValidFAA registration status code V: Valid registration. All codes
N808RB Boeing
PT-13D
Fixed-wing, single engine Schwan'S Consumer Brands INC
Marshall, Minnesota
Standard 2019-08-29 ValidFAA registration status code V: Valid registration. All codes
N60309 Boeing
D75N1
Fixed-wing, single engine Individual owner
Texas
Standard 2019-08-22 ValidFAA registration status code V: Valid registration. All codes
N54822 Convair
BT-13B
Fixed-wing, single engine Planes of Fame Air Museum
Chino, California
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N144Q Dehavilland
BEAVER DHC-2 MK.1
Fixed-wing, single engine Rpl Aircraft Leasing LLC
Anchorage, Alaska
Restricted 2019-08-15 ValidFAA registration status code V: Valid registration. All codes
N268HC Boeing
E75
Fixed-wing, single engine Hershey Flying Service INC
David City, Nebraska
None on file 2019-08-09 ValidFAA registration status code V: Valid registration. All codes
N18137 Lockheed
12A
Fixed-wing, multi-engine Twa Museum
Kansas City, Missouri
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N62886 Boeing
A75
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-08-02 ValidFAA registration status code V: Valid registration. All codes
N53091 Boeing
A75N1(PT17)
Fixed-wing, single engine Individual owner
Texas
Restricted 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N67030 Dehavilland
DHC-2
Fixed-wing, single engine Bristol Bay Sportfishing LLC
Iliamna, Alaska
Standard 2019-07-22 ValidFAA registration status code V: Valid registration. All codes
N45079 Naval Aircraft Factory
N3N-3
Fixed-wing, single engine Individual owner
Florida
Restricted 2019-07-11 ValidFAA registration status code V: Valid registration. All codes
N43T Boeing
E75N1
Fixed-wing, single engine Individual owner
Florida
Standard 2019-07-05 ValidFAA registration status code V: Valid registration. All codes
N53BV Dehavilland
BEAVER DHC-2 MK.1
Fixed-wing, single engine Blue Prop Warbirds LLC
Long Lake, Minnesota
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N60688 Boeing
A75L3
Fixed-wing, single engine Hawke AG Aviation INC
Oakdale, California
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N4627G Weatherly Aviation Co Inc
620A
Fixed-wing, single engine Co-owned owner
Colorado
Restricted 2019-06-07 ValidFAA registration status code V: Valid registration. All codes
N164MC Flynn Kevin
AGGRAVATOR
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N59840 Consolidated Vultee
BT-13A
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N490K Dehavilland
DHC-2
Fixed-wing, single engine Katmai Air LLC
Anchorage, Alaska
Multiple 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N67550 Beech
D17S
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N59469 Boeing
A75N1(PT17)
Fixed-wing, single engine Individual owner
Texas
Restricted 2019-05-20 ValidFAA registration status code V: Valid registration. All codes
N3500B Beech
D18S
Fixed-wing, multi-engine Walter Charles T JR
Ocala, Florida
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N2123X Dehavilland
DHC-2
Fixed-wing, single engine Kias LLC
Waukesha, Wisconsin
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N61278 Beech
D17S
Fixed-wing, single engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2019-05-03 ValidFAA registration status code V: Valid registration. All codes
N985S Beech
G18S
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2019-05-01 ValidFAA registration status code V: Valid registration. All codes
N4989N Dehavilland
DHC-2
Fixed-wing, single engine Lambeth Air LLC
Sitka, Alaska
Standard 2019-04-30 ValidFAA registration status code V: Valid registration. All codes
N51121 Beech
D17S
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-04-04 ValidFAA registration status code V: Valid registration. All codes
N4607N Beech
D17S
Fixed-wing, single engine Tak Air L3C
Hampshire, Illinois
Standard 2019-03-27 ValidFAA registration status code V: Valid registration. All codes
N62LC Dehavilland
DHC-2
Fixed-wing, single engine Northstar Holdings LLC
Anchorage, Alaska
Multiple 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N9877R Dehavilland
DHC-2-L-20
Fixed-wing, single engine Northstar Holdings LLC
Anchorage, Alaska
Multiple 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N1018U Dehavilland
BEAVER DHC-2
Fixed-wing, single engine Island Wings Air Service LLC
Ketchikan, Alaska
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N218TX Beech
AT-11
Fixed-wing, multi-engine Eagle'S Strike LLC
Bellingham, Washington
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N13934 Fairchild
FC-2-W2
Fixed-wing, single engine Claire Aviation INC
Wilmington, Delaware
Standard 2019-03-18 ValidFAA registration status code V: Valid registration. All codes
N67716 Beech
D17S
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2019-03-18 ValidFAA registration status code V: Valid registration. All codes
N4544N Boeing
B75N1
Fixed-wing, single engine Individual owner
Texas
Restricted 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N450SR Boeing
B75N1
Fixed-wing, single engine Individual owner
California
Experimental 2019-03-08 ValidFAA registration status code V: Valid registration. All codes
N64952 Boeing
E75
Fixed-wing, single engine East Chambers AG Historical Society
Winnie, Texas
Restricted 2019-03-07 ValidFAA registration status code V: Valid registration. All codes
N313BT Consolidated Vultee
BT-13A
Fixed-wing, single engine Eastern Stearman INC Trustee
Leesburg, Virginia
Standard 2019-03-05 ValidFAA registration status code V: Valid registration. All codes
N450JB Boeing
E75
Fixed-wing, single engine Individual owner
Connecticut
Standard 2019-02-25 ValidFAA registration status code V: Valid registration. All codes
N6670 Beech
3N
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2019-02-25 ValidFAA registration status code V: Valid registration. All codes
N54749 Boeing
B75
Fixed-wing, single engine Co-owned owner
Oklahoma
Restricted 2019-02-11 ValidFAA registration status code V: Valid registration. All codes
N45SK Beech
C-45H
Fixed-wing, multi-engine Plane Fun INC Tr Trustee
Snellville, Georgia
Standard 2019-02-08 ValidFAA registration status code V: Valid registration. All codes
N6796Q Grumman Acft Eng Cor-Schweizer
G-164B
Fixed-wing, single engine Midwest Flying Service
Elgin, Nebraska
Restricted 2019-02-04 ValidFAA registration status code V: Valid registration. All codes
N49708 Boeing
A75N1(PT17)
Fixed-wing, single engine Ageless Aviation Dreams Foundation INC
Carson City, Nevada
Standard 2019-01-15 ValidFAA registration status code V: Valid registration. All codes
N4942V Curtiss Wright
TRAVEL AIR A-6000-A
Fixed-wing, single engine Individual owner
California
Standard 2019-01-10 ValidFAA registration status code V: Valid registration. All codes
N62571 Price
VICEROY
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-01-07 ValidFAA registration status code V: Valid registration. All codes
N450DJ Boeing
E75N1
Fixed-wing, single engine Second Hand Lions LLC
Lakeville, Minnesota
Standard 2019-01-02 ValidFAA registration status code V: Valid registration. All codes
N25K Beech
D17S
Fixed-wing, single engine Co-owned owner
Washington
Standard 2018-12-26 ValidFAA registration status code V: Valid registration. All codes
N5337 Grumman
G-164A
Fixed-wing, single engine Individual owner
Missouri
Restricted 2018-12-18 ValidFAA registration status code V: Valid registration. All codes
N1311M Howard Aircraft
DGA-15P
Fixed-wing, single engine Individual owner
Missouri
Standard 2018-12-17 ValidFAA registration status code V: Valid registration. All codes
N329 Grumman
G-21A
Fixed-wing, multi-engine Individual owner
California
Standard 2018-12-17 ValidFAA registration status code V: Valid registration. All codes
N2034M Weatherly Aviation Co Inc
620B
Fixed-wing, single engine Individual owner
Nebraska
Restricted 2018-12-14 ValidFAA registration status code V: Valid registration. All codes
N52834 Howard Aircraft
DGA-15P
Fixed-wing, single engine Individual owner
Florida
Standard 2018-12-12 ValidFAA registration status code V: Valid registration. All codes
N20200 Spartan
7W
Fixed-wing, single engine Bbjs Investments LLC
Waukesha, Wisconsin
Standard 2018-11-28 ValidFAA registration status code V: Valid registration. All codes
N15KK Beech
AT-11
Fixed-wing, multi-engine Kfg Aviation INC
Huntersville, North Carolina
Standard 2018-11-21 ValidFAA registration status code V: Valid registration. All codes
N450TW Andersen Theodore L
TAPERWING TA1
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2018-11-20 ValidFAA registration status code V: Valid registration. All codes
N55759 Consolidated Vultee
BT-13A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2018-11-08 ValidFAA registration status code V: Valid registration. All codes
N164E Beech
D17S
Fixed-wing, single engine Goodman Aircraft INC
Wilmington, Delaware
Standard 2018-10-22 ValidFAA registration status code V: Valid registration. All codes
N333E Beech
D17S
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N75863 Boeing
A75N1(PT17)
Fixed-wing, single engine Individual owner
Colorado
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N66557 Boeing
E75
Fixed-wing, single engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N17662 Spartan
7W
Fixed-wing, single engine Individual owner
Texas
Standard 2018-09-25 ValidFAA registration status code V: Valid registration. All codes
N66921 Convair
BT-13B
Fixed-wing, single engine Individual owner
Texas
Standard 2018-09-21 ValidFAA registration status code V: Valid registration. All codes
N52656 Boeing
A75N1(PT17)
Fixed-wing, single engine Individual owner
Washington
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N533DH Dehavilland
DHC-2 MK 1
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-09-19 ValidFAA registration status code V: Valid registration. All codes
N90182 Weatherly Aviation Co Inc
620B
Fixed-wing, single engine Individual owner
Missouri
Restricted 2018-09-19 ValidFAA registration status code V: Valid registration. All codes
N233N Dehavilland
DHC-2
Fixed-wing, single engine Jw LTD
Seattle, Washington
Standard 2018-08-30 ValidFAA registration status code V: Valid registration. All codes
N4558N Boeing
A75
Fixed-wing, single engine Individual owner
Illinois
Restricted 2018-08-28 ValidFAA registration status code V: Valid registration. All codes
N62598 Boeing
A75L300
Fixed-wing, single engine Bbjs Investments LLC
Waukesha, Wisconsin
Experimental 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N67868 Consolidated Vultee
BT-13A
Fixed-wing, single engine Individual owner
Texas
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N136JJ Beech
E18S
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2018-08-23 ValidFAA registration status code V: Valid registration. All codes
N46879 Boeing
A75
Fixed-wing, single engine Windstar Aircraft LLC
Saint Charles, Missouri
Restricted 2018-08-18 ValidFAA registration status code V: Valid registration. All codes
N340KA Dehavilland
BEAVER DHC-2
Fixed-wing, single engine South East Air & Sea LLC
Ward Cove, Alaska
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N450PW Boeing
A75N1(PT17)
Fixed-wing, single engine Western Antique Aeroplane & Automobile Museum
Hood River, Oregon
Experimental 2018-07-31 ValidFAA registration status code V: Valid registration. All codes
N199BM Dehavilland
DHC-2 MK. I(L20A)
Fixed-wing, single engine D & B Aircraft Leasing LLC
Anchorage, Alaska
Multiple 2018-07-30 ValidFAA registration status code V: Valid registration. All codes
N4672V Boeing
E75
Fixed-wing, single engine Co-owned owner
California
Restricted 2018-07-26 ValidFAA registration status code V: Valid registration. All codes
N860BL Dehavilland
DHC-2 MK. I(L20A)
Fixed-wing, single engine Orcas Aircraft LLC
Orcas, Washington
Standard 2018-07-20 ValidFAA registration status code V: Valid registration. All codes
N48542 Grumman Acft Eng Cor-Schweizer
G-164B
Fixed-wing, single engine Buntings Dusting INC
Berlin, Maryland
Restricted 2018-07-19 ValidFAA registration status code V: Valid registration. All codes
N1939K Beech
E18S-9700
Fixed-wing, multi-engine Crazy Woman LLC
Tupelo, Mississippi
Standard 2018-07-12 ValidFAA registration status code V: Valid registration. All codes
N159AK Dehavilland/St Cloud Avn Inc
DHC-2 MK 1
Fixed-wing, single engine N159Ak LLC
Wasilla, Alaska
Standard 2018-07-11 ValidFAA registration status code V: Valid registration. All codes
N75800 Boeing
A75N1(PT17)
Fixed-wing, single engine Co-owned owner
Washington
Restricted 2018-07-11 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.