Continental GTSIO-520-H
9 aircraft on the U.S. register carry a Continental GTSIO-520-H engine, rated at about 375 horsepower. The Cessna 421 Golden Eagle is the model most often fitted with it (9 aircraft). The aircraft carrying it were built between 1971 and 1974.
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-H. FAA spelling: GTSIO-520-H.
Where they are owner's state
Kind of aircraft
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Continental GTSIO-520-H the component layer
The design is held under 1 type certificate (E7CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 27 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 102 failure reports with the FAA since 1995, 5 of them in the last ten years.
FAA orders 27 airworthiness directives · newest first
Failure reports 102 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Latest reports
Certificates and bulletins
Safety bulletins 6 · advice, not orders
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
- Cessna 421 Golden Eagle 9 with this engine series
- Texas 1 of these aircraft
- Oklahoma 1 of these aircraft
- Ohio 1 of these aircraft
- Massachusetts 1 of these aircraft
- Iowa 1 of these aircraft
- Stefenelli Aviation N Tr INC Trustee 1 of these aircraft
- Qualitair LLC Trustee 1 of these aircraft
- FAA orders naming the Continental GTSIO-520-H 27 airworthiness directives
- Failure reports on the Continental GTSIO-520-H 102 reports since 1995
These connections as data: /graph/engine/continental-gtsio-520-h.json · about the eFlight graph.
Aircraft newest certificates first · 9
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N421FA | Cessna 421B |
Fixed-wing, multi-engine | All In Aviation LLC Longview, Texas |
Standard | 2026-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N421BX | Cessna 421B |
Fixed-wing, multi-engine | Crystal Air LLC Brighton, Massachusetts |
Standard | 2025-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N612CG | Cessna 421B |
Fixed-wing, multi-engine | Casa Grande Homes INC Blanchard, Oklahoma |
Standard | 2022-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N155J | Cessna 421B |
Fixed-wing, multi-engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2020-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N16AS | Cessna 421B |
Fixed-wing, multi-engine | Stefenelli Aviation N Tr INC Trustee Attersee, |
Standard | 2020-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N41114 | Cessna 421B |
Fixed-wing, multi-engine | Individual owner Ohio |
Standard | 2017-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N458VC | Cessna 421B |
Fixed-wing, multi-engine | Wing and A Prayer LLC Sarasota, Florida |
Standard | 2014-11-13 | ValidFAA registration status code V: Valid registration. All codes |
| N42776 | Cessna 421B |
Fixed-wing, multi-engine | Hap'S Air INC Ames, Iowa |
Standard | 2013-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N624PK | Cessna 421B |
Fixed-wing, multi-engine | Bas Part Sales LLC Greeley, Colorado |
Standard | 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.