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
N7338V Bellanca
17-30
Fixed-wing, single engine Eiger Jet Support Group LLC
Manchester, New Hampshire
Standard 2017-11-13 ValidFAA registration status code V: Valid registration. All codes
N258TC Beech
V35
Fixed-wing, single engine Individual owner
Texas
Standard 2017-11-09 ValidFAA registration status code V: Valid registration. All codes
N1RM Cessna
A185F
Fixed-wing, single engine Individual owner
Montana
Standard 2017-11-08 ValidFAA registration status code V: Valid registration. All codes
N2089W Beech
95-C55
Fixed-wing, multi-engine Baron 2089W LLC
Jupiter, Florida
Standard 2017-11-08 ValidFAA registration status code V: Valid registration. All codes
N1473F Cessna
A185F
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N135JA Beech
V35
Fixed-wing, single engine D & K Aviation INC
Milford, Iowa
Standard 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N600MD Beech
S35
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N731CQ Cessna
A188B
Fixed-wing, single engine D & K Aviation INC
Milford, Iowa
Restricted 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N765WF Beech
58
Fixed-wing, multi-engine Kofel Aviation LLC
Clayton, Georgia
Standard 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N2037Q Beech
A36
Fixed-wing, single engine Individual owner
Texas
Standard 2017-11-03 ValidFAA registration status code V: Valid registration. All codes
N77VB Beech
V35B
Fixed-wing, single engine Morgenroth Aviation LLC
Victoria, Texas
Standard 2017-11-01 ValidFAA registration status code V: Valid registration. All codes
N6201V Beech
V35A
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-30 ValidFAA registration status code V: Valid registration. All codes
N2573X Cessna
P206
Fixed-wing, single engine Skd LLC
Spokane, Washington
Standard 2017-10-27 ValidFAA registration status code V: Valid registration. All codes
N15XA Beech
A36
Fixed-wing, single engine Individual owner
Washington
Standard 2017-10-26 ValidFAA registration status code V: Valid registration. All codes
N606T Beech
A36
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-10-26 ValidFAA registration status code V: Valid registration. All codes
N81TE Beech
58
Fixed-wing, multi-engine Co-owned owner
California
Standard 2017-10-26 ValidFAA registration status code V: Valid registration. All codes
N242SF Beech
V35B
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N4282S Beech
A36
Fixed-wing, single engine Individual owner
Kansas
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N6135V Beech
S35
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N9568Q Beech
V35
Fixed-wing, single engine N9568Q LLC
Lake Worth, Florida
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N200TL Cessna
U206A
Fixed-wing, single engine Husnik Brad M
Forest Lake, Minnesota
Standard 2017-10-24 ValidFAA registration status code V: Valid registration. All codes
N36GF Beech
A36
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-24 ValidFAA registration status code V: Valid registration. All codes
N9678E Bellanca
17-30A
Fixed-wing, single engine Kilo Row LLC
Rochester Hills, Michigan
Standard 2017-10-23 ValidFAA registration status code V: Valid registration. All codes
N6901R Cessna
T210G
Fixed-wing, single engine Individual owner
Washington
Standard 2017-10-20 ValidFAA registration status code V: Valid registration. All codes
N6662T Beech
V35B
Fixed-wing, single engine Individual owner
California
Standard 2017-10-19 ValidFAA registration status code V: Valid registration. All codes
N7109N Beech
D55
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N96W Beech
V35B
Fixed-wing, single engine Withheld at owner's request
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N2041P Beech
F33A
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N207JP Cessna
207
Fixed-wing, single engine Waters Aero-Marine INC
Owls Head, Maine
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N285H Beech
F33A
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N6536H Cessna
A185F
Fixed-wing, single engine Three Rivers Lake Creek LLC
Kapolei, Hawaii
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N900DF Cessna
207
Fixed-wing, single engine Waters Aero-Marine INC
South Thomaston, Maine
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N9357K Cessna
B188B
Fixed-wing, single engine Csc Delaware Trust CO Trustee
Wilmington, Delaware
Restricted 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N71BL Beech
36
Fixed-wing, single engine Individual owner
Florida
Standard 2017-10-12 ValidFAA registration status code V: Valid registration. All codes
N9355N Cessna
A185F
Fixed-wing, single engine Co-owned owner
Maine
Standard 2017-10-11 ValidFAA registration status code V: Valid registration. All codes
N1694W Beech
A36
Fixed-wing, single engine Individual owner
Maryland
Standard 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N822M Beech
35-C33A
Fixed-wing, single engine Individual owner
California
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N735P Beech
58
Fixed-wing, multi-engine Two J Aviation LLC
Lima, Ohio
Standard 2017-09-22 ValidFAA registration status code V: Valid registration. All codes
N747BP Beech
V35B
Fixed-wing, single engine Rose James M
White Hall, Arkansas
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N77YE Beech
E-55
Fixed-wing, multi-engine Individual owner
California
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N7951M Beech
35-C33A
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N8490N Beech
V35A
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-09-18 ValidFAA registration status code V: Valid registration. All codes
N334CP Beech
A36
Fixed-wing, single engine Rws Aviation LLC
Indianapolis, Indiana
Standard 2017-09-13 ValidFAA registration status code V: Valid registration. All codes
N5651K Beech
S35
Fixed-wing, single engine Co-owned owner
California
Standard 2017-09-13 ValidFAA registration status code V: Valid registration. All codes
N857BC Beech
V35A
Fixed-wing, single engine Individual owner
Florida
Standard 2017-09-13 ValidFAA registration status code V: Valid registration. All codes
N501ML Beech
58
Fixed-wing, multi-engine Individual owner
Minnesota
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N65JE Beech
A36
Fixed-wing, single engine Van Wadle Aviation LLC
Blairsville, Georgia
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N70083 Cessna
A185E
Fixed-wing, single engine Air Pacific LLC
Port Angeles, Washington
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N9076Q Beech
A36
Fixed-wing, single engine 76Q LLC
Ventura, California
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N99910 Beech
V35B
Fixed-wing, single engine Roof Management LTD
Marysville, Ohio
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N98MW Beech
F33A
Fixed-wing, single engine Individual owner
Maryland
Standard 2017-09-08 ValidFAA registration status code V: Valid registration. All codes
N19D Cessna
A185F
Fixed-wing, single engine Echelon Right LLC
Nicholasville, Kentucky
Standard 2017-09-07 ValidFAA registration status code V: Valid registration. All codes
N3472G Cessna
310R
Fixed-wing, multi-engine Individual owner
California
Standard 2017-09-07 ValidFAA registration status code V: Valid registration. All codes
N937DJ Beech
F33A
Fixed-wing, single engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2017-09-07 ValidFAA registration status code V: Valid registration. All codes
N210SC Cessna
210G
Fixed-wing, single engine Individual owner
Texas
Standard 2017-09-06 ValidFAA registration status code V: Valid registration. All codes
N66JL Beech
A36
Fixed-wing, single engine Lucia Joanne
Agawam, Massachusetts
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N8247A Beech
F33A
Fixed-wing, single engine Quality Kiln & Dryer INC
Oakdale, Louisiana
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N1018W Beech
V35B
Fixed-wing, single engine Individual owner
Maryland
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N310PL Cessna
310R
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N4301W Beech
V35B
Fixed-wing, single engine Individual owner
Washington
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N6725V Beech
A36
Fixed-wing, single engine Advanced Thermal Systems INC
West Memphis, Arkansas
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N111TW Beech
V35A
Fixed-wing, single engine Scott Hersmon Builder INC
Ada, Michigan
Standard 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N1917U Cessna
A185E
Fixed-wing, single engine Pinewood Homes LLC
Hayward, Wisconsin
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N7254T Beech
F33A
Fixed-wing, single engine King Up LLC
Brookhaven, Georgia
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N7014E Cessna
210D
Fixed-wing, single engine Individual owner
Iowa
Experimental 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N2088U Cessna
U206G
Fixed-wing, single engine Simpson Equipment Leasing LLC
Hays, Kansas
Standard 2017-08-18 ValidFAA registration status code V: Valid registration. All codes
N351RS Beech
V35
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-08-17 ValidFAA registration status code V: Valid registration. All codes
N64BT Beech
F33A
Fixed-wing, single engine Sunflower Enterprises INC
Dubuque, Iowa
Standard 2017-08-17 ValidFAA registration status code V: Valid registration. All codes
N323JL Beech
D55
Fixed-wing, multi-engine Leghorn Airfleet LLC
Columbus, Indiana
Standard 2017-08-16 ValidFAA registration status code V: Valid registration. All codes
N2066N Beech
V35B
Fixed-wing, single engine Individual owner
Florida
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N4022Y Cessna
185
Fixed-wing, single engine Individual owner
Idaho
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N6108V Beech
S35
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N2619X Cessna
P206
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N3793Y Cessna
210D
Fixed-wing, single engine Best Aircraft Deals LLC
Salt Lake City, Utah
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N6296V Beech
V35A
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N9242Q Beech
V35B
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-11 ValidFAA registration status code V: Valid registration. All codes
N2048Z Beech
F33A
Fixed-wing, single engine Julis Wings LLC
Jacksonville, Florida
Standard 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N310MT Cessna
310R
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N5077R Cessna
A185F
Fixed-wing, single engine Hawkins Transportation LLC
Anchorage, Alaska
Multiple 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N104DE Cessna
A185F
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N1329U Cessna
210N
Fixed-wing, single engine A C W INC
Gonzales, Louisiana
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N18413 Beech
F33A
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N3953Q Cessna
A185F
Fixed-wing, single engine Queen Anne Air LLC
Seattle, Washington
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N5381E Cessna
A185F
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N1526W Beech
E-55
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2017-08-08 ValidFAA registration status code V: Valid registration. All codes
N210MY Cessna
210M
Fixed-wing, single engine Its Always Something LLC
Winter Haven, Florida
Standard 2017-08-04 ValidFAA registration status code V: Valid registration. All codes
N9044S Beech
S35
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N1512W Beech
V35B
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2017-08-01 ValidFAA registration status code V: Valid registration. All codes
N8147V Cessna
A188
Fixed-wing, single engine Individual owner
Texas
Multiple 2017-08-01 ValidFAA registration status code V: Valid registration. All codes
N57UM Beech
F33A
Fixed-wing, single engine Individual owner
Florida
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N1758W Beech
F33A
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N3867Y Cessna
210D
Fixed-wing, single engine Individual owner
California
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N501SB Cessna
310R
Fixed-wing, multi-engine Individual owner
Missouri
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N282R Beech
F33A
Fixed-wing, single engine Tenere Ventures LLC
Wilmington, Delaware
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N47KA Beech
A36
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N401SB Beech
58
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N8047P Beech
F33A
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N1853W Beech
V35B
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-07-21 ValidFAA registration status code V: Valid registration. All codes
N2040A Beech
V35A
Fixed-wing, single engine Co-owned owner
California
Standard 2017-07-21 ValidFAA registration status code V: Valid registration. All codes
N2190L Beech
A36
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-07-21 ValidFAA registration status code V: Valid registration. All codes
Previous Page 55 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.