Continental TSIO-520-NB
52 aircraft on the U.S. register carry a Continental TSIO-520-NB engine, rated at about 310 horsepower. The Cessna 340 is the model most often fitted with it (26 aircraft). The aircraft carrying it were built between 1970 and 1990.
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-NB. FAA spelling: TSIO-520-NB.
Fitted to model families
Cessna 34026Cessna 414 Chancellor23Mooney M-202Cessna T-3101
Cessna 340 · Cessna 414 Chancellor · Mooney M-20 · Cessna T-310
Where they are owner's state
Wyoming4Missouri4Florida4Delaware4California4South Carolina3Oklahoma3Nevada3Virginia2Texas2
Kind of aircraft
Piston twins49 (94%)Piston singles2 (4%)Turboprops1 (2%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Continental TSIO-520-NB the component layer
The design is held under 1 type certificate (E8CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 32 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 310 failure reports with the FAA since 1995, 33 of them in the last ten years.
FAA orders 32 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
2016-09-152016-16-12 · Cylinder assemblies · engine
Failure reports 310 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Cylinder61Cylinder Head31Clamp15Lifter10Magneto9Engine8Crankshaft7Camshaft6Crankcase6Pump5
Latest reports
2025-11-26Support: corroded
2025-11-25Angle: corroded
2025-09-16Intake Duct: ruptured
2022-12-13Tach Generator: seized
2021-04-20Drive Shaft: sheared
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
- Cessna 340 26 with this engine series
- Cessna 414 Chancellor 23 with this engine series
- Mooney M-20 2 with this engine series
- Cessna T-310 1 with this engine series
Where they are
- Wyoming 4 of these aircraft
- Missouri 4 of these aircraft
- Florida 4 of these aircraft
- Delaware 4 of these aircraft
- California 4 of these aircraft
Biggest operators
- Southern Aircraft Consultancy INC Trustee 2 of these aircraft
- International Air Services INC Trustee 2 of these aircraft
- Aircraft Guaranty CORP Trustee 2 of these aircraft
Airworthiness
- FAA orders naming the Continental TSIO-520-NB 32 airworthiness directives
- Failure reports on the Continental TSIO-520-NB 310 reports since 1995
Analytics
These connections as data: /graph/engine/continental-tsio-520-nb.json · about the eFlight graph.
Aircraft newest certificates first · 52
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N414TN | Cessna 414 |
Fixed-wing, multi-engine | Individual owner Alabama |
Standard | 2026-08-07 | ValidFAA registration status code V: Valid registration. All codes |
| N77BR | Cessna 340A |
Fixed-wing, multi-engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N1234W | Cessna 414 |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | 2026-04-06 | ValidFAA registration status code V: Valid registration. All codes |
| N97HC | Cessna T310R |
Fixed-wing, multi-engine | Alpha Whiskey 1 LLC Brandon, Mississippi |
Restricted | 2026-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N340JF | Cessna 340A |
Fixed-wing, multi-engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N340RA | Cessna 340A |
Fixed-wing, multi-engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N346DW | Cessna 340A |
Fixed-wing, multi-engine | Valiair Lc Trustee Casper, Wyoming |
Standard | 2026-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N414TF | Cessna 414A |
Fixed-wing, multi-engine | Blue Sky Aviation LLC Columbia, Tennessee |
Standard | 2025-10-27 | ValidFAA registration status code V: Valid registration. All codes |
| N305PJ | Mooney Aircraft Corp. M20K |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2025-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N569JM | Cessna 414A |
Fixed-wing, multi-engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2025-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N789PT | Cessna 414A |
Fixed-wing, multi-engine | Valiair Limited Company Casper, Wyoming |
Standard | 2025-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N87536 | Cessna 340A |
Fixed-wing, multi-engine | Individual owner North Dakota |
Standard | 2025-03-31 | ValidFAA registration status code V: Valid registration. All codes |
| N254PB | Cessna 340A |
Fixed-wing, multi-engine | Nicole Business Group LLC Hooks, Texas |
Standard | 2025-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N92WH | Cessna 340A |
Fixed-wing, multi-engine | 322Ee Aviation LLC Union, Kentucky |
Standard | 2025-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N30FB | Cessna 414A |
Fixed-wing, multi-engine | Bmg Aviation Leasing LLC Bloomington, Indiana |
Standard | 2025-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N233JH | Cessna 414A |
Fixed-wing, multi-engine | Aircraft Holding Solutions LLC Trustee Newark, Delaware |
Standard | 2024-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N789MD | Cessna 340A |
Fixed-wing, multi-engine | 340A1021 INC Trustee Wilmington, Delaware |
Standard | 2024-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N414EG | Cessna 414A |
Fixed-wing, multi-engine | Hardrock Transport LLC Pulaski, Virginia |
Standard | 2024-06-03 | ValidFAA registration status code V: Valid registration. All codes |
| N615SA | Cessna 340A |
Fixed-wing, multi-engine | Lordemann Holdings LLC Kalispell, Montana |
Standard | 2024-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N167AW | Cessna 340A |
Fixed-wing, multi-engine | Plane Fun INC Tr Trustee Snellville, Georgia |
Standard | 2024-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N777D | Cessna 340A |
Fixed-wing, multi-engine | Pittsburgh Institute of Aeronautics West Mifflin, Pennsylvania |
Standard | 2024-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N134GG | Cessna 340A |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2024-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N340GT | Cessna 340A |
Fixed-wing, multi-engine | Wow-We Wings LLC Pawleys Island, South Carolina |
Standard | 2023-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N64KT | Cessna 340A |
Fixed-wing, multi-engine | Individual owner Nebraska |
Standard | 2023-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N414BL | Cessna 414A |
Fixed-wing, multi-engine | Big South Fork Aero INC Huntsville, Tennessee |
Standard | 2023-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N650BD | Cessna 414A |
Fixed-wing, multi-engine | V1Vr LLC Saint Louis, Missouri |
Standard | 2023-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N8789B | Cessna 414A |
Fixed-wing, multi-engine | Bearcat Aviation LLC Joplin, Missouri |
Standard | 2023-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N606PP | Cessna 414 |
Fixed-wing, multi-engine | Andriopulos Salguero INC Hialeah, Florida |
Standard | 2023-02-04 | ValidFAA registration status code V: Valid registration. All codes |
| N414JL | Cessna 414A |
Fixed-wing, multi-engine | Aero Guard Aviation Insurance LLC Lincoln, Nebraska |
Standard | 2023-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N68KL | Cessna 340A |
Fixed-wing, multi-engine | Individual owner Washington |
Standard | 2023-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N500QV | Cessna 340A |
Fixed-wing, multi-engine | Jands LLC Broken Arrow, Oklahoma |
Standard | 2023-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N340JS | Cessna 340A |
Fixed-wing, multi-engine | Individual owner Colorado |
Standard | 2022-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N414DW | Cessna 414A |
Fixed-wing, multi-engine | Agrigro Midwest Aviation LLC Poplar Bluff, Missouri |
Standard | 2022-01-19 | ValidFAA registration status code V: Valid registration. All codes |
| N340JC | Cessna 340A |
Fixed-wing, multi-engine | S O W Aviation LLC Crystal River, Florida |
Standard | 2021-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N700HB | Cessna 414A |
Fixed-wing, multi-engine | Lucky7 Air LLC Lenoir, North Carolina |
Standard | 2021-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N379TW | Cessna 414A |
Fixed-wing, multi-engine | Tanglewood Aviation LLC Fort Mill, South Carolina |
Standard | 2021-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N414HL | Cessna 414A |
Fixed-wing, multi-engine | Warwick CORP Laughlin, Nevada |
Standard | 2019-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N414KH | Cessna 414 |
Fixed-wing, multi-engine | Indian Flight LLC Lake Placid, Florida |
Standard | 2019-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N15VV | Cessna 340A |
Fixed-wing, multi-engine | Liberty Flying Club INC Trustee Wilmington, Delaware |
Standard | 2018-11-01 | ValidFAA registration status code V: Valid registration. All codes |
| N340JL | Cessna 340A |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2018-10-11 | ValidFAA registration status code V: Valid registration. All codes |
| N320SW | Cessna 414A |
Fixed-wing, multi-engine | East West Investment Advisors LLC Sandy Point, Virginia |
Standard | 2018-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N6827L | Cessna 340A |
Fixed-wing, multi-engine | Duke Aviation LLC Woodridge, Illinois |
Standard | 2018-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N169KS | Cessna 414A |
Fixed-wing, multi-engine | Svetfur Aviation LLC Camden, South Carolina |
Standard | 2018-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N669JM | Cessna 340A |
Fixed-wing, multi-engine | Merrell Bros Aviation LLC Kokomo, Indiana |
Standard | 2016-06-21 | ValidFAA registration status code V: Valid registration. All codes |
| N740WJ | Cessna 340A |
Fixed-wing, multi-engine | Alm Holding LLC Winton, California |
Standard | 2016-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N340YZ | Cessna 340A |
Fixed-wing, multi-engine | N340Yz CORP Trustee Wilmington, Delaware |
Standard | 2016-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N934CR | Cessna 414A |
Fixed-wing, multi-engine | Reygar Investments LLC Brownsville, Texas |
Standard | 2014-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N47AG | Cessna 340 |
Fixed-wing, multi-engine | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2014-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N414JA | Cessna 414A |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2012-07-03 | ValidFAA registration status code V: Valid registration. All codes |
| N340MY | Cessna 340A |
Fixed-wing, multi-engine | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2012-06-13 | ValidFAA registration status code V: Valid registration. All codes |
| N414EH | Cessna 414A |
Fixed-wing, multi-engine | Surdex CORP Chesterfield, Missouri |
Standard | 2011-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N1173W | Mooney Aircraft Corp. M20K |
Fixed-wing, single engine | Individual owner Iowa |
Standard | 1997-05-12 | 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.