The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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
N7382V Bellanca
17-30
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N8092R Beech
36
Fixed-wing, single engine Boogers In Flight LLC
Ada, Oklahoma
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N8292Q Cessna
A185F
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N89GT Beech
F33A
Fixed-wing, single engine Co-owned owner
California
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N9577E Bellanca
17-30A
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N5WA Beech
E-55
Fixed-wing, multi-engine Co-owned owner
Nevada
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N817CA Beech
A36
Fixed-wing, single engine Faze3 Partners LLC
Kalispell, Montana
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N36ET Beech
A36
Fixed-wing, single engine
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N5703K Beech
S35
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N1699W Beech
A36
Fixed-wing, single engine Dkp Holdings LLC
Melbourne Beach, Florida
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N14CM Beech
V35B
Fixed-wing, single engine Individual owner
California
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N158RX Cessna
A185F
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N47TL Cessna
A185F
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N14772 Bellanca
17-30A
Fixed-wing, single engine Individual owner
Kansas
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N3532A Beech
E33A
Fixed-wing, single engine Guedon Aviation LLC
Natchez, Mississippi
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N428DL Cessna
310R
Fixed-wing, multi-engine Giair LLC
Morristown, Tennessee
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N5617C Beech
F33A
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N3725Q Beech
35-C33A
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N3854Y Cessna
210D
Fixed-wing, single engine James Wilson Smith Enterprises LLC
Athens, Georgia
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N6175R Cessna
T210F
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N61DB Beech
V35B
Fixed-wing, single engine Individual owner
California
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N7202N Beech
V35A
Fixed-wing, single engine Bowers Enterprises LLC
Peachtree City, Georgia
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N9487S Beech
V35
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N2041W Beech
V35
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N310PE Cessna
310R
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N407CB Beech
A36
Fixed-wing, single engine Individual owner
California
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N4649E Cessna
A185F
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N58LF Beech
58
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N87341 Cessna
310R
Fixed-wing, multi-engine N87341 LLC
Milford, Michigan
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N8800M Beech
S35
Fixed-wing, single engine Flying Leatherheads LLC
Lakeland, Florida
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N5897S Beech
S35
Fixed-wing, single engine Precision Aviation LLC
Califon, New Jersey
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N7516N Beech
V35A
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N425BB Bellanca
17-30
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N4262S Beech
A36
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N8339N Beech
V35A
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N3309S Cessna
210J
Fixed-wing, single engine Cessna 210 N3309S LLC
Yellville, Arkansas
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N6623G Cessna
A188B
Fixed-wing, single engine Individual owner
Montana
Restricted 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N7252R Beech
A36
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N83RB Cessna
A185F
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N8787Q Cessna
U206G
Fixed-wing, single engine 2Fly Safety LLC Trustee
Azle, Texas
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N565U Cessna
206
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N6135C Beech
A36
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N6509G Cessna
A188B
Fixed-wing, single engine Individual owner
Montana
Restricted 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N9217R Cessna
U206G
Fixed-wing, single engine Individual owner
Washington
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N1594L Beech
A36
Fixed-wing, single engine Individual owner
South Dakota
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N894AH Cessna
U206G
Fixed-wing, single engine Aerospace Asset Holdings LLC
Wilmington, Delaware
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N5881J Beech
S35
Fixed-wing, single engine Dj&M Aero LLC
Eau Claire, Wisconsin
Standard 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N9552G Cessna
A188B
Fixed-wing, single engine Jesse Shipman Farms LLC
Honey Grove, Texas
Restricted 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N3463G Cessna
310R
Fixed-wing, multi-engine Co-owned owner
Montana
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N51WA Beech
F33A
Fixed-wing, single engine Pennewell Solutions LLC
Dover, Delaware
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N206DC Cessna
U206F
Fixed-wing, single engine Ari Air LLC
Anchorage, Alaska
Standard 2021-05-07 ValidFAA registration status code V: Valid registration. All codes
N69TF Beech
F33A
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2021-05-07 ValidFAA registration status code V: Valid registration. All codes
N185H Cessna
A185F
Fixed-wing, single engine N185H LLC
Hamilton, Montana
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N21686 Cessna
A188B
Fixed-wing, single engine Sapp Creek Aviation LLC
Omega, Georgia
Restricted 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N4306A Beech
E-55
Fixed-wing, multi-engine Odyssey Aviation LLC
Raleigh, North Carolina
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N4654Q Cessna
210L
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N57P Beech
58
Fixed-wing, multi-engine Gulf Sierra Aviation LLC
Owasso, Oklahoma
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N777GT Cessna
210D
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N7901K Beech
S35
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N39FC Cessna
A185F
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-05-05 ValidFAA registration status code V: Valid registration. All codes
N123WB Beech
58
Fixed-wing, multi-engine Highview LLC
Brentwood, Tennessee
Standard 2021-05-04 ValidFAA registration status code V: Valid registration. All codes
N29278 Cessna
210L
Fixed-wing, single engine Pancho Moreno y la Flaca LLC
Camuy, Puerto Rico
Standard 2021-05-04 ValidFAA registration status code V: Valid registration. All codes
N749RV Cessna
U206F
Fixed-wing, single engine Time Machine LLC
Kailua Kona, Hawaii
Standard 2021-05-04 ValidFAA registration status code V: Valid registration. All codes
N13HM Beech
E-55
Fixed-wing, multi-engine N13Hm LLC
Punta Gorda, Florida
Standard 2021-05-03 ValidFAA registration status code V: Valid registration. All codes
N1837Z Beech
V35B
Fixed-wing, single engine Bert Aviation LLC
Clemmons, North Carolina
Standard 2021-05-03 ValidFAA registration status code V: Valid registration. All codes
N58MC Beech
F33C
Fixed-wing, single engine Tubreaux Aviation Services LLC
Shreveport, Louisiana
Standard 2021-05-03 ValidFAA registration status code V: Valid registration. All codes
N312CS Cessna
310R
Fixed-wing, multi-engine Flybuys3 LLC
Lewes, Delaware
Standard 2021-05-01 ValidFAA registration status code V: Valid registration. All codes
N3736D Beech
A36
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2021-04-27 ValidFAA registration status code V: Valid registration. All codes
N4836C Cessna
A185F
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-04-27 ValidFAA registration status code V: Valid registration. All codes
N1794W Beech
A36
Fixed-wing, single engine Skyhawk Flying Club INC
Omaha, Nebraska
Standard 2021-04-26 ValidFAA registration status code V: Valid registration. All codes
N1845F Cessna
210F
Fixed-wing, single engine Individual owner
New Mexico
Standard 2021-04-26 ValidFAA registration status code V: Valid registration. All codes
N5833S Beech
S35
Fixed-wing, single engine Individual owner
Florida
Standard 2021-04-26 ValidFAA registration status code V: Valid registration. All codes
N5947S Cessna Aircraft Co
A185F
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-04-26 ValidFAA registration status code V: Valid registration. All codes
N7114N Beech
V35A
Fixed-wing, single engine Prairie Air INC
Elbow Lake, Minnesota
Standard 2021-04-26 ValidFAA registration status code V: Valid registration. All codes
N234DW Cessna
310R
Fixed-wing, multi-engine N234Dw Aviation INC
Okemos, Michigan
Standard 2021-04-23 ValidFAA registration status code V: Valid registration. All codes
N5285R Cessna
A185F
Fixed-wing, single engine Puddle Jumper Aviation LLC
Brighton, Colorado
Standard 2021-04-23 ValidFAA registration status code V: Valid registration. All codes
N7707R Beech
36
Fixed-wing, single engine Condor 1 LLC
Jackson, Tennessee
Standard 2021-04-23 ValidFAA registration status code V: Valid registration. All codes
N1296G Cessna
310R
Fixed-wing, multi-engine Air Dogs LLC
Watford City, North Dakota
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N1PZ Beech
E-55
Fixed-wing, multi-engine
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N350CT Beech
35-C33A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N5450U Beech
V35
Fixed-wing, single engine Stay Air Borne LLC
Wilmington, Delaware
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N8355Q Cessna
U206F
Fixed-wing, single engine Delta Pacific Northwest LLC
Anchorage, Alaska
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N8869V Bellanca
17-30A
Fixed-wing, single engine Individual owner
Arkansas
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N9517Q Beech
V35
Fixed-wing, single engine Brasco INC
Huntley, Illinois
Standard 2021-04-21 ValidFAA registration status code V: Valid registration. All codes
N8132N Beech
F33A
Fixed-wing, single engine Beechit LLC
Prescott, Arizona
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N17865 Beech
V35B
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N1175T Beech
58
Fixed-wing, multi-engine Cleared for the Option Aviation Services LLC
Kingwood, Texas
Standard 2021-04-17 ValidFAA registration status code V: Valid registration. All codes
N1194A Beech
36
Fixed-wing, single engine Gta Air INC
Addison, Texas
Standard 2021-04-17 ValidFAA registration status code V: Valid registration. All codes
N176LL Cessna
210L
Fixed-wing, single engine Clear Above LLC
Haymarket, Virginia
Standard 2021-04-17 ValidFAA registration status code V: Valid registration. All codes
N7695N Beech
V35A
Fixed-wing, single engine Chalk 2 INC
Apple Valley, California
Standard 2021-04-16 ValidFAA registration status code V: Valid registration. All codes
N1071M Cessna
T210J
Fixed-wing, single engine Co-owned owner
Montana
Standard 2021-04-14 ValidFAA registration status code V: Valid registration. All codes
N3259R Cessna
U206F
Fixed-wing, single engine Global Marc Aire INC
Dallas, Texas
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N424JB Beech
F33A
Fixed-wing, single engine Jsj Aircraft Holdings LLC
San Diego, California
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N6684V Beech
58
Fixed-wing, multi-engine Fba Leasing LLC
Mountain Brk, Alabama
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N8421N Beech
V35A
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N9138G Cessna
A188B
Fixed-wing, single engine Tlc Flying INC
Colfax, Washington
Restricted 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N334TR Beech
F33A
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2021-04-12 ValidFAA registration status code V: Valid registration. All codes
N714JE Cessna
A185F
Fixed-wing, single engine Co-owned owner
Utah
Standard 2021-04-12 ValidFAA registration status code V: Valid registration. All codes
N310HC Cessna
310R
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2021-04-10 ValidFAA registration status code V: Valid registration. All codes
N40GM Beech
S35
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-04-10 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.