Continental GTSIO-520-C
387 aircraft on the U.S. register carry a Continental GTSIO-520-C engine, rated at about 340 horsepower. The Cessna 421 Golden Eagle is the model most often fitted with it (204 aircraft). The aircraft carrying it were built between 1965 and 2003.
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 GTSIO-520-C. FAA spelling: GTSIO-520-C.
Fitted to model families
Cessna 421 Golden Eagle204Cessna T210 Turbo Centurion61Beechcraft V35 Bonanza23Cessna 32014Cessna TU20612Cessna TP20610Cessna T-3109Cessna 414 Chancellor8Cessna 4118Cessna 4017Cirrus SR206Aero Commander 6855
Cessna 421 Golden Eagle · Cessna T210 Turbo Centurion · Beechcraft V35 Bonanza · Cessna 320 · Cessna TU206 · Cessna TP206 · Cessna T-310 · Cessna 414 Chancellor · Cessna 411 · Cessna 401
Where they are owner's state
Florida37Texas36California36Colorado26Delaware18Arizona17Oregon16Oklahoma14Kansas14Utah12
Kind of aircraft
Piston twins265 (68%)Piston singles122 (32%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Continental GTSIO-520-C the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 44 failure reports with the FAA since 1995, 15 of them in the last ten years.
Failure reports 44 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Cylinder15Blade3Alternator1Antenna1Bearing1Bolt1Bracket1Bulkhead1Circuit Breaker1Clamp1
Latest reports
2015-09-22Governor: failed
2015-07-28Control Cable: disconnected
2014-12-25Screw: sheared
2014-04-03Alternator: failed
2012-08-24Clamp: cracked
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 421 Golden Eagle 204 with this engine series
- Cessna T210 Turbo Centurion 61 with this engine series
- Beechcraft V35 Bonanza 23 with this engine series
- Cessna 320 14 with this engine series
- Cessna TU206 12 with this engine series
- Cessna TP206 10 with this engine series
- Cessna T-310 9 with this engine series
- Cessna 414 Chancellor 8 with this engine series
Where they are
- Florida 37 of these aircraft
- Texas 36 of these aircraft
- California 36 of these aircraft
- Colorado 26 of these aircraft
- Delaware 18 of these aircraft
Biggest operators
- Bas Part Sales LLC 5 of these aircraft
- Tvpx Aircraft Solutions INC Trustee 3 of these aircraft
- Valiair Lc Trustee 2 of these aircraft
- Dodson International Parts INC 2 of these aircraft
Airworthiness
- Failure reports on the Continental GTSIO-520-C 44 reports since 1995
Analytics
These connections as data: /graph/engine/continental-gtsio-520-c.json · about the eFlight graph.
Aircraft newest certificates first · 387
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N421BN | Cessna 421B |
Fixed-wing, multi-engine | One Golden Eagle LLC Kalispell, Montana |
Standard | 2026-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N15ZP | Cessna 421B |
Fixed-wing, multi-engine | Stefenelli Aviation N Tr INC Trustee Attersee, |
Standard | 2026-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N5975J | Cessna 414 |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 2026-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N818TK | Cessna 421C |
Fixed-wing, multi-engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N421FM | Cessna 421B |
Fixed-wing, multi-engine | Axis Aviation LLC Cape Canaveral, Florida |
Standard | 2026-08-02 | ValidFAA registration status code V: Valid registration. All codes |
| N8632Z | Cessna TP206C |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2026-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N80RS | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | 2026-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N555MY | Cessna 421B |
Fixed-wing, multi-engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2026-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N2749T | Beech V35 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-07-01 | ValidFAA registration status code V: Valid registration. All codes |
| N6784R | Cessna T210F |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N35VC | Cessna 401A |
Fixed-wing, multi-engine | Individual owner Puerto Rico |
Standard | 2026-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N421YP | Cessna 421B |
Fixed-wing, multi-engine | Wateractive43 LLC Auburn, California |
Standard | 2026-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N5716J | Cessna P206E |
Fixed-wing, single engine | Taos Sky Flight School LLC El Prado, New Mexico |
Standard | 2026-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N3309Q | Cessna 320D |
Fixed-wing, multi-engine | B & R Aerial Crop Care INC Connell, Washington |
Standard | 2026-04-27 | ValidFAA registration status code V: Valid registration. All codes |
| N707DT | Cessna 421B |
Fixed-wing, multi-engine | Fresco Toys LLC Miami, Florida |
Standard | 2026-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N6155R | Cessna 210F |
Fixed-wing, single engine | Plane + Simple LLC Salt Lake City, Utah |
Standard | 2026-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1YA | Cessna 421B |
Fixed-wing, multi-engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N6783R | Cessna T210F |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-01-27 | ValidFAA registration status code V: Valid registration. All codes |
| N368TP | Aero Commander 685 |
Fixed-wing, multi-engine | Individual owner Oklahoma |
Standard | 2026-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N763TC | Cessna T210F |
Fixed-wing, single engine | N42 Hy LLC Kalispell, Montana |
Standard | 2026-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N421VC | Cessna 421B |
Fixed-wing, multi-engine | Er Aviation LLC Brazil, Indiana |
Standard | 2025-12-29 | ValidFAA registration status code V: Valid registration. All codes |
| N8775Z | Cessna TP206D |
Fixed-wing, single engine | B&B Auto Body LLC Terreton, Idaho |
Standard | 2025-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N712JW | Cessna 421A |
Fixed-wing, multi-engine | Falcon & Phoenix Aviation LLC Las Vegas, Nevada |
Standard | 2025-12-06 | ValidFAA registration status code V: Valid registration. All codes |
| N5988M | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Arizona |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N103EC | Cessna 401 |
Fixed-wing, multi-engine | Aerial Surveys International LLC Watkins, Colorado |
Standard | 2025-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N5NN | Cessna 421C |
Fixed-wing, multi-engine | Rkgrier LLC Beckley, West Virginia |
Standard | 2025-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N6264V | Beech V35 |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2025-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N5402A | Cessna P210R |
Fixed-wing, single engine | Individual owner Louisiana |
Standard | 2025-10-21 | ValidFAA registration status code V: Valid registration. All codes |
| N421RL | Cessna 421A |
Fixed-wing, multi-engine | Individual owner Tennessee |
Standard | 2025-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N22X | Beech V35 |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 2025-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N202Z | Cessna 411A |
Fixed-wing, multi-engine | Co-owned owner California |
Standard | 2025-09-28 | ValidFAA registration status code V: Valid registration. All codes |
| N763JC | Cessna 421C |
Fixed-wing, multi-engine | Pilot Services of Ohio LLC Loveland, Ohio |
Standard | 2025-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N6777R | Cessna T210F |
Fixed-wing, single engine | Individual owner District of Columbia |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N310D | Cessna T310Q |
Fixed-wing, multi-engine | Chispa Air LLC Cedar Park, Texas |
Standard | 2025-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N477MG | Cessna 421B |
Fixed-wing, multi-engine | Juliet Delta Aviation LLC Bozeman, Montana |
Standard | 2025-08-16 | ValidFAA registration status code V: Valid registration. All codes |
| N2236Q | Cessna 421A |
Fixed-wing, multi-engine | Woods Leland W Klamath Falls, Oregon |
Standard | 2025-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N3753Q | Beech V35 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N444SM | Cessna 421B |
Fixed-wing, multi-engine | Posada Law Pllc Boca Raton, Florida |
Standard | 2025-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N748CA | Cessna 421C |
Fixed-wing, multi-engine | Desert Air Ambulance INC Menifee, California |
Standard | 2025-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N147U | Beech V35 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N421CT | Cessna 421B |
Fixed-wing, multi-engine | Arizona Air Salvage Phoenix, Arizona |
Standard | 2025-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N111TL | Cessna 421B |
Fixed-wing, multi-engine | Ndk Global Holdings CORP Dover, Delaware |
Standard | 2025-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N23DT | Cessna 421B |
Fixed-wing, multi-engine | Alastrom Aviation LLC Wilmington, Delaware |
Standard | 2025-03-16 | ValidFAA registration status code V: Valid registration. All codes |
| N421LC | Cessna 421C |
Fixed-wing, multi-engine | Api Aviation Leasing LLC North Venice, Florida |
Standard | 2025-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N41041 | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Minnesota |
Standard | 2025-03-07 | ValidFAA registration status code V: Valid registration. All codes |
| N6789R | Cessna T210F |
Fixed-wing, single engine | Dodson International Parts INC Rantoul, Kansas |
Standard | 2025-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N421BP | Cessna 421B |
Fixed-wing, multi-engine | Med Jets USA INC Boca Raton, Florida |
Standard | 2025-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N318PP | Cessna 421B |
Fixed-wing, multi-engine | K&A Consulting of Montana INC Billings, Montana |
Standard | 2024-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N84RT | Cessna 421B |
Fixed-wing, multi-engine | Co-owned owner Georgia |
Standard | 2024-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N951LE | Cessna 320F |
Fixed-wing, multi-engine | Individual owner Colorado |
Standard | 2024-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N42BC | Cessna 421B |
Fixed-wing, multi-engine | Rotary Components International INC Houston, Texas |
Standard | 2024-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N4CG | Cessna T210F |
Fixed-wing, single engine | Affordable Avionics Ind DBA Chino, California |
Standard | 2024-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N100JL | Cessna 421 |
Fixed-wing, multi-engine | Bytelogics INC New York, New York |
Standard | 2024-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N240RT | Cessna 421B |
Fixed-wing, multi-engine | Aviation Trust Company LLC Trustee Oklahoma City, Oklahoma |
Standard | 2024-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N1GQ | Cessna 421B |
Fixed-wing, multi-engine | Aero Attack Systems (USA) INC Blaine, Washington |
Standard | 2024-09-05 | Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes |
| N9AY | Cessna 421C |
Fixed-wing, multi-engine | Proclaim Aviation Ministries Worthington, Minnesota |
Standard | 2024-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N350H | Beech V35 |
Fixed-wing, single engine | Aims Community College Greeley, Colorado |
Standard | 2024-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N1543G | Cessna 421B |
Fixed-wing, multi-engine | Qds Aviation LLC Baton Rouge, Louisiana |
Standard | 2024-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N1946G | Cessna 421B |
Fixed-wing, multi-engine | Partwin421 LLC Greenwich, Connecticut |
Standard | 2024-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N8148M | Cirrus Design Corp SR20 |
Fixed-wing, single engine | Dmac Aircraft LLC Savannah, Georgia |
Standard | 2024-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N411Z | Cessna 421B |
Fixed-wing, multi-engine | Jkdj LLC Tyler, Texas |
Standard | 2024-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N9SD | Cessna 421B |
Fixed-wing, multi-engine | Resort Aviation LLC Surfside Beach, South Carolina |
Standard | 2024-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N41019 | Cessna 421B |
Fixed-wing, multi-engine | Sjs Flights LP Columbus, Georgia |
Standard | 2024-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N7911M | Beech V35 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2024-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N4MU | Cessna 421B |
Fixed-wing, multi-engine | Blusky Properties & Investments LLC Cameron, Missouri |
Standard | 2024-05-30 | ValidFAA registration status code V: Valid registration. All codes |
| N6729R | Cessna T210F |
Fixed-wing, single engine | Dfo Dynamic Aviation LLC Glendale, Arizona |
Standard | 2024-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N4AD | Cessna 421B |
Fixed-wing, multi-engine | Valiair Lc Trustee Casper, Wyoming |
Standard | 2024-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N9ED | Cessna T210L |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2024-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N113MP | Cessna 421C |
Fixed-wing, multi-engine | Ban Air LLC Boerne, Texas |
Standard | 2024-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N5371J | Cessna 421B |
Fixed-wing, multi-engine | Coleair LLC Lewes, Delaware |
Standard | 2024-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N10GM | Cessna T210F |
Fixed-wing, single engine | Alo Aviation LLC Titusville, Florida |
Standard | 2024-03-31 | ValidFAA registration status code V: Valid registration. All codes |
| N6272T | Cessna 421A |
Fixed-wing, multi-engine | Individual owner Maine |
Standard | 2024-03-18 | ValidFAA registration status code V: Valid registration. All codes |
| N17HL | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Colorado |
Standard | 2024-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N444TA | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Arizona |
Standard | 2024-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N87MK | Cessna 421B |
Fixed-wing, multi-engine | Wind River Aviation LLC Lawton, Oklahoma |
Standard | 2024-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N77EP | Cessna 421B |
Fixed-wing, multi-engine | Cba Air LLC Tuscaloosa, Alabama |
Standard | 2024-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N421GC | Cessna 421B |
Fixed-wing, multi-engine | Btc Enterprises LLC Wilmington, Delaware |
Standard | 2024-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N421RC | Cessna 421B |
Fixed-wing, multi-engine | Co-owned owner Wisconsin |
Standard | 2024-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N333CJ | Cessna 421B |
Fixed-wing, multi-engine | Drj Aviation LLC Dover, Delaware |
Standard | 2024-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N411TB | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Oregon |
Standard | 2023-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N6176R | Cessna T210F |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2023-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N918BV | Cessna 421C |
Fixed-wing, multi-engine | Individual owner Indiana |
Standard | 2023-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N6782R | Cessna T210F |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2023-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N41124 | Cessna 421B |
Fixed-wing, multi-engine | Wenta Nip & Sanitizing LLC Monte Vista, Colorado |
Standard | 2023-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N123BT | Cessna 421B |
Fixed-wing, multi-engine | Yingling Consultation LLC Wilmington, Delaware |
Standard | 2023-11-15 | ValidFAA registration status code V: Valid registration. All codes |
| N860RC | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 2023-11-12 | ValidFAA registration status code V: Valid registration. All codes |
| N393MP | Cessna 421C |
Fixed-wing, multi-engine | Dutch Indian Air LLC Riverdale, California |
Standard | 2023-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N7116W | Cessna 421B |
Fixed-wing, multi-engine | Ezra Aviation LLC Katy, Texas |
Standard | 2023-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N6910R | Cessna T210H |
Fixed-wing, single engine | Dirty Birdy Aviation LLC Silt, Colorado |
Standard | 2023-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N70CP | Cessna 421B |
Fixed-wing, multi-engine | Off To the Races LLC St George, Utah |
Standard | 2023-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N144R | Beech V35 |
Fixed-wing, single engine | Extrivo INC Lewes, Delaware |
Standard | 2023-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N67JV | Cessna 421C |
Fixed-wing, multi-engine | Next Gen Aviation LLC Jenks, Oklahoma |
Standard | 2023-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N3308Q | Cessna 320D |
Fixed-wing, multi-engine | Dodson International Parts INC Rantoul, Kansas |
Standard | 2023-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N69RH | Cessna 401A |
Fixed-wing, multi-engine | Wheels Down Air LLC Toledo, Ohio |
Standard | 2023-08-11 | ValidFAA registration status code V: Valid registration. All codes |
| N721VG | Cessna 421B |
Fixed-wing, multi-engine | B & W Aerial Spray INC Dimmitt, Texas |
Standard | 2023-08-11 | ValidFAA registration status code V: Valid registration. All codes |
| N111TF | Cessna 421B |
Fixed-wing, multi-engine | Pacific Aviation Aircraft Management INC Ontario, Oregon |
Standard | 2023-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N500TJ | Cessna 421B |
Fixed-wing, multi-engine | Airbyars LLC Spartanburg, South Carolina |
Standard | 2023-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N1527G | Cessna 421B |
Fixed-wing, multi-engine | Co-owned owner Florida |
Standard | 2023-07-17 | ValidFAA registration status code V: Valid registration. All codes |
| N26533 | Cessna 421C |
Fixed-wing, multi-engine | Txoperation LLC Fort Scott, Kansas |
Standard | 2023-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N6843R | Cessna T210G |
Fixed-wing, single engine | Arkansas Air LLC Jackson, Wyoming |
Standard | 2023-07-11 | 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 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.