Continental TSIO-520-UB
27 aircraft on the U.S. register carry a Continental TSIO-520-UB engine, rated at about 300 horsepower. The Beechcraft B36 Bonanza is the model most often fitted with it (18 aircraft). The aircraft carrying it were built between 1955 and 2002.
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-UB (2 codes). FAA spellings: TSIO-520-UB · TSIO-520-UB.
Fitted to model families
Beechcraft B36 Bonanza18Beechcraft A36 Bonanza6Beechcraft T-341Cessna T2071Francis Daniel FRANCIS CA-71
Beechcraft B36 Bonanza · Beechcraft A36 Bonanza · Beechcraft T-34 · Cessna T207 · Francis Daniel FRANCIS CA-7
Where they are owner's state
Florida6California5Texas2New York2Wyoming1Virginia1South Dakota1Ohio1North Dakota1Montana1
Kind of aircraft
Piston singles25 (93%)Turboprops2 (7%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Continental TSIO-520-UB the component layer
The design is held under 1 type certificate (E8CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 37 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 31 failure reports with the FAA since 1995, 6 of them in the last ten years.
FAA orders 37 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
Failure reports 31 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Turbocharger3Line2Ring2Valve Spring2Bracket1Camshaft1Clamp1Connecting Rod1Cover Assy1Cylinder1
Latest reports
2014-12-12Cylinder Head: cracked
2014-01-03Plate: cracked
2011-06-22Motor: failed
2011-06-02Rotor: open
2010-11-24Camshaft: spalled
Certificates and bulletins
E8CEType certificate held by Continental Aerospace Technologies, INC. · 31 models listed · revised April 6, 2020
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
- Beechcraft B36 Bonanza 18 with this engine series
- Beechcraft A36 Bonanza 6 with this engine series
- Beechcraft T-34 1 with this engine series
- Cessna T207 1 with this engine series
Where they are
- Florida 6 of these aircraft
- California 5 of these aircraft
- Texas 2 of these aircraft
- New York 2 of these aircraft
- Wyoming 1 of these aircraft
Biggest operators
- Qualitair LLC Trustee 2 of these aircraft
Airworthiness
- FAA orders naming the Continental TSIO-520-UB 37 airworthiness directives
- Failure reports on the Continental TSIO-520-UB 31 reports since 1995
Analytics
These connections as data: /graph/engine/continental-tsio-520-ub.json · about the eFlight graph.
Aircraft newest certificates first · 27
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N523DB | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | N523Db LLC Santa Ana, California |
Standard | 2026-07-07 | ValidFAA registration status code V: Valid registration. All codes |
| N6387U | Beech B36TC |
Fixed-wing, single engine | Co-owned owner Louisiana |
Standard | 2025-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N134RD | Beech T-34B |
Fixed-wing, single engine | Co-owned owner Virginia |
Standard | 2025-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N225CR | Beech B36TC |
Fixed-wing, single engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2024-03-27 | ValidFAA registration status code V: Valid registration. All codes |
| N747YV | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | Great Among the Nations INC Beverly Hills, California |
Standard | 2023-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N30LF | Beech A36TC |
Fixed-wing, single engine | Signalwave LLC Doral, Florida |
Standard | 2023-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N324GT | Beech A36TC |
Fixed-wing, single engine | 324 Aviation LLC Cavour, South Dakota |
Standard | 2023-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N63JN | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | Desert Air INC Phoenix, Arizona |
Standard | 2023-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N207DF | Cessna T207A |
Fixed-wing, single engine | Double R Air LLC Miami, Florida |
Standard | 2023-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N644BL | Beech B36TC |
Fixed-wing, single engine | Individual owner California |
Standard | 2023-08-02 | ValidFAA registration status code V: Valid registration. All codes |
| N908DB | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | B36 LLC Winter Park, Florida |
Standard | 2023-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N3070T | Beech B36TC |
Fixed-wing, single engine | Individual owner North Dakota |
Standard | 2022-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N361KW | Beech A36TC |
Fixed-wing, single engine | Fliteco Holdings LLC Lewes, Delaware |
Standard | 2022-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N32TB | Beech A36TC |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 2021-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N101KG | Beech B36TC |
Fixed-wing, single engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2021-06-30 | ValidFAA registration status code V: Valid registration. All codes |
| N11RM | Beech B36TC |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2021-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N2155N | Beech A36TC |
Fixed-wing, single engine | Flight Test Affiliates LLC Flagler Beach, Florida |
Standard | 2020-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N67DF | Francis Daniel FRANCIS CA-7 |
Fixed-wing, single engine | Individual owner Montana |
Experimental | 2019-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N6529R | Beech B36TC |
Fixed-wing, single engine | N6529R LLC Merritt Island, Florida |
Standard | 2018-09-21 | ValidFAA registration status code V: Valid registration. All codes |
| N66585 | Beech B36TC |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2018-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N640MC | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | Individual owner New York |
Standard | 2016-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N434CC | Beech B36TC |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2015-05-13 | ValidFAA registration status code V: Valid registration. All codes |
| N683SD | Beech A36TC |
Fixed-wing, single engine | Co-owned owner New York |
Standard | 2015-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N6745Y | Beech B36TC |
Fixed-wing, single engine | Seamech International INC Houston, Texas |
Standard | 2008-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N928KM | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2008-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N417WC | Beech B36TC |
Fixed-wing, single engine | Mpi Warehouse Specialty Company INC Casper, Wyoming |
Standard | 2003-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N4474M | Raytheon Aircraft Company B36TC |
Fixed-wing, single engine | N4474M INC Camarillo, California |
Standard | 2001-12-07 | 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.