The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 2026

Continental IO-520 series

9,484 aircraft on the U.S. register carry a Continental IO-520 series engine, rated at about 285 horsepower. The Beechcraft V35 Bonanza is the model most often fitted with it (1,496 aircraft). The aircraft carrying it were built between 1963 and 2017.

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 Continental IO-520 series. FAA spelling: IO 520 SERIES.

When the aircraft were built by decade

By decade built, as a table
aircraft
194012
195037
19602,627
19704,534
19801,114
1990189
20005
20102

What the FAA has certified, ordered and been told about the Continental IO-520 series the component layer

The design is held under 1 type certificate (E5CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 30 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 465 failure reports with the FAA since 1995, 26 of them in the last ten years.

FAA orders 30 airworthiness directives · newest first

2023-10-262023-17-04 · Reciprocating Engine Oil System · engine
2023-03-152023-05-16 · Reciprocating Engine Power Section · engine
2023-02-232023-04-08 · Reciprocating Engine Power Section · engine
2023-02-172023-02-12 · Engine Air Intake System · engine
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2022-03-292022-04-04 · Reciprocating Engine Oil System · engine

All orders naming the Continental IO-520 series

Failure reports 465 since · what operators and shops told the FAA

016314662950005101520224
Failure reports by year, as a table
reports
9515
962
971
981
995
0037
0148
0258
0346
0435
0562
0617
0718
0817
0910
1020
1115
1213
139
1410
1512
164
172
181
192
202
221
242

Parts most often reported as the reports name them

Cylinder26Cylinder Head25Relay20Hub14Circuit Breaker13Antenna12Line12Bolt10Bracket9Control Cable9
Parts most reported, as a table
reports
Cylinder26
Cylinder Head25
Relay20
Hub14
Circuit Breaker13
Antenna12
Line12
Bolt10
Bracket9
Control Cable9

Latest reports

2024-04-06Engine: power loss
2024-04-06Engine: power loss
2022-01-21None: none
2020-07-10Rod: broken
2020-01-15Turnbuckle: corroded

Certificates and bulletins

E5CEType certificate held by Continental Aerospace Technologies, INC. · 18 models listed · revised March 8, 2022

Safety bulletins 11 · advice, not orders

2020-04-06NE-20-05 · POWERPLANT - Engine Camshaft Gear Tooth Fracture
2018-06-20NE-18-16 · POWERPLANT Alternator Drive Coupling
2017-05-10NE-17-11 · POWERPLANT Engine damage as a result of kickback
2016-03-08NE-16-13 · Powerplant - Prohibited use of sealant
2013-02-08NE-13-15 · Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers

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

The whole map of how records connect · these connections as data: /graph/engine/continental-io-520-series.json.

Aircraft newest certificates first · 9,484

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N5771J Cessna
T210K
Fixed-wing, single engine Withheld at owner's request
Standard 2019-06-26 ValidFAA registration status code V: Valid registration. All codes
N1827L Beech
58
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-06-25 ValidFAA registration status code V: Valid registration. All codes
N4704A Cessna
A185F
Fixed-wing, single engine Brown Helicopter INC
Pensacola, Florida
Standard 2019-06-25 ValidFAA registration status code V: Valid registration. All codes
N8001Z Cessna
U206
Fixed-wing, single engine Gfi Investments LLC
Gillette, Wyoming
Standard 2019-06-25 ValidFAA registration status code V: Valid registration. All codes
N28093 Bellanca
17-30A
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N340D Beech
V35
Fixed-wing, single engine N340Dholding LLC
Allen, Texas
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N7298R Beech
F33A
Fixed-wing, single engine Individual owner
Texas
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N7870R Beech
V35A
Fixed-wing, single engine Co-owned owner
California
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N8094G Cessna
A188B
Fixed-wing, single engine Tri Rotor Spray & Chemical
Ulysses, Kansas
Restricted 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N1466M Cessna
U206E
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-06-20 ValidFAA registration status code V: Valid registration. All codes
N666RS Bellanca
17-30A
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2019-06-20 ValidFAA registration status code V: Valid registration. All codes
N161W Beech
S35
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N5751J Cessna
210K
Fixed-wing, single engine B & H Drilg
Winnsboro, Louisiana
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N39839 Bellanca
17-30A
Fixed-wing, single engine Individual owner
New Mexico
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N7273R Beech
A36
Fixed-wing, single engine Individual owner
Texas
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N508SD Cessna
A185F
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N8803M Beech
S35
Fixed-wing, single engine Ferwerda Beech LLC
Fremont, New Hampshire
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N700SS Beech
A36
Fixed-wing, single engine Individual owner
Florida
Standard 2019-06-14 ValidFAA registration status code V: Valid registration. All codes
N1698W Beech
V35B
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N3MY Beech
V35B
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N7206B Beech
F33A
Fixed-wing, single engine St Andrews Systems LLC
Navarre, Florida
Standard 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N9034V Beech
A36
Fixed-wing, single engine Vanderhoof Consulting LLC
Omaha, Nebraska
Standard 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N5217U Cessna
206
Fixed-wing, single engine Individual owner
Alaska
Multiple 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N3443 Beech
F33A
Fixed-wing, single engine
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N45LC Beech
A36
Fixed-wing, single engine Individual owner
Florida
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N6670V Bellanca
17-30
Fixed-wing, single engine Collum Aviation LLC
Milton, Florida
Standard 2019-06-04 ValidFAA registration status code V: Valid registration. All codes
N2787J Cessna
A185E
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N3173W Beech
A36
Fixed-wing, single engine Flying Hammer Aviation LLC
Crosslake, Minnesota
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N54VK Beech
V35
Fixed-wing, single engine Pain Management and Aesthetics LLC
Celina, Ohio
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N87MJ Beech
58
Fixed-wing, multi-engine Individual owner
Michigan
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N4474W Beech
58
Fixed-wing, multi-engine R and S Aviation LLC
Corning, Arkansas
Standard 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N4973U Cessna
210E
Fixed-wing, single engine Flightpath Leasing LLC
Tallahassee, Florida
Experimental 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N8262D Beech
F33A
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N26PV Beech
F33A
Fixed-wing, single engine Individual owner
Arkansas
Standard 2019-05-28 ValidFAA registration status code V: Valid registration. All codes
N24SC Cessna
U206G
Fixed-wing, single engine Individual owner
Missouri
Standard 2019-05-24 ValidFAA registration status code V: Valid registration. All codes
N7711L Cessna
A185E
Fixed-wing, single engine Individual owner
Indiana
Standard 2019-05-24 ValidFAA registration status code V: Valid registration. All codes
N7917K Beech
S35
Fixed-wing, single engine Stratospheric Flyers Group INC
Louisville, Kentucky
Standard 2019-05-24 ValidFAA registration status code V: Valid registration. All codes
N1569P Beech
F33A
Fixed-wing, single engine Flying Bull Aviation LLC
Santee, California
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N862T Beech
S35
Fixed-wing, single engine November 862 Tango INC
Wilmington, Delaware
Standard 2019-05-22 ValidFAA registration status code V: Valid registration. All codes
N303RJ Cessna
A185E
Fixed-wing, single engine Tr Zato Heir Land & Cattle LLC
Spur, Texas
Standard 2019-05-21 ValidFAA registration status code V: Valid registration. All codes
N710AB Beech
A36
Fixed-wing, single engine Af-Aviation LLC
Miami, Florida
Standard 2019-05-21 ValidFAA registration status code V: Valid registration. All codes
N2555T Navion
NAVION H
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-05-17 ValidFAA registration status code V: Valid registration. All codes
N969Y Beech
A36
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-05-17 ValidFAA registration status code V: Valid registration. All codes
N100ML Beech
58
Fixed-wing, multi-engine Ml Aviation LLC
Boulder, Colorado
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N17604 Beech
E-55
Fixed-wing, multi-engine Montgomery Aviation CORP
Montgomery, Alabama
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N186RL Beech
F33A
Fixed-wing, single engine N186Rl LLC
Fortson, Georgia
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N70006 Cessna
A185E
Fixed-wing, single engine Colorado Red LLC
Dillon, Colorado
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N29299 Cessna
U206C
Fixed-wing, single engine Svetic Russell T
Redondo Beach, California
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N38RR Beech
A36
Fixed-wing, single engine Individual owner
Ohio
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N500LD Beech
58
Fixed-wing, multi-engine J & H Investment CORP INC
Columbia, Missouri
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N1770R Cessna
A185F
Fixed-wing, single engine Withheld at owner's request
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N2015C Beech
A36
Fixed-wing, single engine Morgan Arrow LLC
Greeley, Colorado
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N3735T Beech
A36
Fixed-wing, single engine Individual owner
Utah
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N91170 Cessna
207
Fixed-wing, single engine Paklook Air INC
Bethel, Alaska
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N339MS Cessna
210M
Fixed-wing, single engine Mile and A Half High LLC
Sarasota, Florida
Standard 2019-05-10 ValidFAA registration status code V: Valid registration. All codes
N4150L Cessna
172G
Fixed-wing, single engine Individual owner
California
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N4356R Cessna
A185F
Fixed-wing, single engine Tailwind Innovations INC
Overland Park, Kansas
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N4715F Cessna
P206B
Fixed-wing, single engine Individual owner
California
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N5939S Beech
V35
Fixed-wing, single engine Brown Boy Aviation
Royal City, Washington
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N60AK Cessna
A185F
Fixed-wing, single engine Schmidt Jason A
Wasilla, Alaska
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N8233M Cessna
210K
Fixed-wing, single engine Sixty Nine Kilo LLC
Oakland, California
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N8841M Beech
S35
Fixed-wing, single engine Banana Boys LLC
Seattle, Washington
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N185ST Cessna
A185F
Fixed-wing, single engine Terry D Stewart
Anchorage, Alaska
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N2987T Aero Commander
200D
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N6316V Bellanca
17-30A
Fixed-wing, single engine Individual owner
Nevada
None on file 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N6697V Bellanca
17-30
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N807LW Beech
F33A
Fixed-wing, single engine Individual owner
Virginia
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N9487Q Beech
V35B
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N9588Q Beech
V35
Fixed-wing, single engine Nsa LLC
Chandler, Arizona
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N1234Q Beech
36
Fixed-wing, single engine Individual owner
Washington
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N1753W Beech
F33A
Fixed-wing, single engine Conservative Three LLC
Taft, California
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N222TD Beech
A36
Fixed-wing, single engine Tango Leasing INC
Bullhead City, Arizona
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N3230R Beech
F33A
Fixed-wing, single engine Individual owner
California
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N3346L Cessna
A185E
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N5740M Cessna
T-310P
Fixed-wing, multi-engine Co-owned owner
Texas
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N8654Q Beech
S35
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N52AU Beech
V35
Fixed-wing, single engine Individual owner
Louisiana
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N5451U Beech
35-C33A
Fixed-wing, single engine Individual owner
Florida
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N58MF Beech
58
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N4456S Beech
A36
Fixed-wing, single engine Fressh Air LLC
Vancouver, Washington
Standard 2019-05-02 ValidFAA registration status code V: Valid registration. All codes
N777WL Cessna
210K
Fixed-wing, single engine Aerospace Trust Mangement LLC Trustee
Wilmington, Delaware
Standard 2019-05-01 ValidFAA registration status code V: Valid registration. All codes
N185HA Cessna
A185F
Fixed-wing, single engine Individual owner
North Dakota
Standard 2019-04-30 ValidFAA registration status code V: Valid registration. All codes
N8241K Beech
F33A
Fixed-wing, single engine Blytheair LLC
Laguna Hills, California
Standard 2019-04-30 ValidFAA registration status code V: Valid registration. All codes
N1244Y Beech
95-C55
Fixed-wing, multi-engine Individual owner
Oklahoma
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N146BP Beech
F33A
Fixed-wing, single engine Individual owner
Florida
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N177SW Beech
A36
Fixed-wing, single engine Co-owned owner
Texas
Special flight permit 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N4185S Beech
F33A
Fixed-wing, single engine Jetset Aviation LLC
Helena, Alabama
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N75DK Cessna
U206F
Fixed-wing, single engine Individual owner
Ohio
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N8788V Bellanca
17-30A
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N9273Q Beech
A36
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N2040G Beech
A36
Fixed-wing, single engine Final Forge LLC
Blountville, Tennessee
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N36LP Beech
A36
Fixed-wing, single engine Myers Aviation INC
Oshkosh, Wisconsin
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N416BR Beech
F33A
Fixed-wing, single engine Individual owner
Illinois
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N2670M Beech
F33A
Fixed-wing, single engine Phelan Construction LLC
North Andover, Massachusetts
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N3364S Cessna
210J
Fixed-wing, single engine Air Deeken LTD
Doylestown, Ohio
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N555JD Cessna
310R
Fixed-wing, multi-engine Mike Bravo LLC
Chicago, Illinois
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N7121N Beech
V35A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N8933 Beech
F33A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N5147C Cessna
310R
Fixed-wing, multi-engine Individual owner
Mississippi
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N17698 Beech
A36
Fixed-wing, single engine Individual owner
Kentucky
Standard 2019-04-19 ValidFAA registration status code V: Valid registration. All codes
Previous Page 48 of 95 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.