The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Continental TSIO-520-N

11 aircraft on the U.S. register carry a Continental TSIO-520-N engine, rated at about 310 horsepower. The Cessna 340 is the model most often fitted with it (5 aircraft). The aircraft carrying it were built between 1973 and 2008.

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 TSIO-520-N. FAA spelling: TSIO-520-N.

Fitted to model families

Cessna 3405Cessna 414 Chancellor4Cessna 421 Golden Eagle1Jackson R D/Marini R J VELOCITY XL-RG1

Cessna 340 · Cessna 414 Chancellor · Cessna 421 Golden Eagle · Jackson R D/Marini R J VELOCITY XL-RG

Where they are owner's state

Wyoming1Utah1Texas1South Carolina1Nevada1New Hampshire1Michigan1Kentucky1Hawaii1Florida1

Kind of aircraft

Piston twins10 (91%)Piston singles1 (9%)

When the aircraft were built by decade

02457719703198012000

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

The design is held under 1 type certificate (E8CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 33 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 66 failure reports with the FAA since 1995, 16 of them in the last ten years.

FAA orders 33 airworthiness directives · newest first

2023-10-262023-17-04 · Reciprocating Engine Oil System · engine
2023-02-172023-02-12 · Engine Air Intake System · engine
2016-09-152016-16-12 · Cylinder assemblies · engine
2014-04-252014-05-29 · SAP replacement parts manufacturer approval (PMA) investment cast cylinder assemblies · engine
2012-06-082012-10-13 · Starter adapters · engine
2012-02-242012-03-06 · Fuel servo diaphragm · engine

All orders naming the Continental TSIO-520-N

Failure reports 66 since · what operators and shops told the FAA

02581095000512514

Parts most often reported as the reports name them

Cylinder6Impulse Coupling4Bearing3Engine3Filter3Line3Beam2Bellcrank2Blade2Connect Rod2

Latest reports

2014-07-07Impulse Coupling: cracked
2014-07-07Impulse Coupling: cracked
2014-07-07Impulse Coupling: cracked
2014-07-07Impulse Coupling: cracked
2014-03-28Engine: making metal

Certificates and bulletins

E8CEType certificate held by Continental Aerospace Technologies, INC. · 31 models listed · revised April 6, 2020

Safety bulletins 10 · 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

These connections as data: /graph/engine/continental-tsio-520-n.json · about the eFlight graph.

Aircraft newest certificates first · 11

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N2920G Cessna
340A
Fixed-wing, multi-engine Individual owner
Texas
Standard 2025-05-16 ValidFAA registration status code V: Valid registration. All codes
N414NW Cessna
414
Fixed-wing, multi-engine Assure Air LLC
Sturgis, Kentucky
Standard 2024-01-19 ValidFAA registration status code V: Valid registration. All codes
N340CL Cessna
340A
Fixed-wing, multi-engine Magafly LLC
Bay City, Michigan
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N34AW Cessna
340A
Fixed-wing, multi-engine Valiair Lc Trustee
Casper, Wyoming
Standard 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N636KK Cessna
340A
Fixed-wing, multi-engine Knox Construction INC
Verdi, Nevada
Standard 2022-08-18 ValidFAA registration status code V: Valid registration. All codes
N414DV Cessna
414
Fixed-wing, multi-engine Snoopy'S Aviation LLC
Porterville, California
Standard 2021-06-04 ValidFAA registration status code V: Valid registration. All codes
N414TA Cessna
414A
Fixed-wing, multi-engine Jerry L Stephens Investments LLC
Sunset, South Carolina
Standard 2018-06-28 ValidFAA registration status code V: Valid registration. All codes
N2XF Jackson R D/Marini R J
VELOCITY XL-RG
Fixed-wing, single engine N2Xf LLC
Windermere, Florida
Experimental 2018-01-18 ValidFAA registration status code V: Valid registration. All codes
N76MJ Cessna
421C
Fixed-wing, multi-engine Jzw Aviation LLC
North Salt Lake, Utah
Standard 2017-12-28 ValidFAA registration status code V: Valid registration. All codes
N414JC Cessna
414
Fixed-wing, multi-engine Individual owner
Hawaii
Standard 2016-09-21 ValidFAA registration status code V: Valid registration. All codes
N340GM Cessna
340A
Fixed-wing, multi-engine Elbitamerica INC
Merrimack, New Hampshire
Experimental 2006-07-20 ValidFAA registration status code V: Valid registration. All codes

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.