The U.S. aircraft register, updated daily
Engines · turboshaft · data as of October 7, 2026

General Electric CT58 series

13 aircraft on the U.S. register carry a General Electric CT58 series engine, rated at about 1350 horsepower. The Sikorsky S-61 is the model most often fitted with it (6 aircraft). The aircraft carrying it were built between 1961 and 1977.

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 General Electric CT58 series. FAA spelling: CT58 SERIES.

Fitted to model families

Sikorsky S-616Bell TH-1F2Boeing-Vertol 1071Boeing-Vertol CH-461Kawasaki Vertol KV107-111Sikorsky SH-31Vertol 1071

Sikorsky S-61 · Bell TH-1F · Boeing-Vertol 107 · Boeing-Vertol CH-46 · Kawasaki Vertol KV107-11 · Sikorsky SH-3 · Vertol 107

Where they are owner's state

Oregon6Florida2Virginia1Texas1Pennsylvania1Michigan1Kentucky1

Kind of aircraft

Helicopters13 (100%)

When the aircraft were built by decade

024688196031970

What the FAA has certified, ordered and been told about the General Electric CT58 series the component layer

The design is held under 1 type certificate (1E3, held by General Electric Company). The FAA has issued 16 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 2 failure reports with the FAA since 1995, 1 of them in the last ten years.

FAA orders 16 airworthiness directives · newest first

2015-11-182015-20-09 · Life-limited rotating parts · engine
2008-12-012008-22-16 · Repetitive heavy lift (RHL) · engine
2004-03-092004-04-06 · Fuel flow divider assemblies · engine
2001-10-182001-18-06 · Engine Life-limited Rotating Parts · engine
1997-12-1997-21-08 · Stage 1 forward cooling plate · engine
1997-11-2897-19-17 · Critical rotating parts · engine

All orders naming the General Electric CT58 series

Failure reports 2 since · what operators and shops told the FAA

00011196111

Parts most often reported as the reports name them

Drive Spline1Pin1

Latest reports

2011-09-02Pin: worn
1996-06-26Drive Spline: damaged

Certificates and bulletins

1E3Type certificate held by General Electric Company · 5 models listed · revised September 4, 2018

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

These connections as data: /graph/engine/general-electric-ct58-series.json · about the eFlight graph.

Aircraft newest certificates first · 13

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N703HG Sikorsky
S-61N
Rotorcraft Construction Helicopters LLC
Howell, Michigan
Standard 2026-04-30 ValidFAA registration status code V: Valid registration. All codes
N14MH Bell
TH-1F
Rotorcraft Sierra Aeronautics LLC
Franklin, Kentucky
Restricted 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N8123M Bell
TH-1F
Rotorcraft Helicopter Powerline Services LLC
Bluefield, Virginia
Restricted 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N7682F Boeing-Vertol
CH-46E
Rotorcraft National United States Armed Forces Museum
Houston, Texas
Experimental 2022-09-12 ValidFAA registration status code V: Valid registration. All codes
N138AR Sikorsky
S-61N
Rotorcraft Amentum Services INC
West Palm Beach, Florida
Standard 2022-02-07 ValidFAA registration status code V: Valid registration. All codes
N232AC Sikorsky
S-61N
Rotorcraft Amentum Services INC
West Palm Beach, Florida
Standard 2022-02-07 ValidFAA registration status code V: Valid registration. All codes
N471WR Sikorsky
S-61N
Rotorcraft Coulson Aviation USA INC
Portland, Oregon
Standard 2021-11-10 ValidFAA registration status code V: Valid registration. All codes
N983WW Sikorsky
SH-3H
Rotorcraft Carson Helicopters INC
Perkasie, Pennsylvania
Experimental 2019-12-05 ValidFAA registration status code V: Valid registration. All codes
N621CK Sikorsky
S-61N
Rotorcraft Croman CORP
White City, Oregon
Standard 2015-05-19 ValidFAA registration status code V: Valid registration. All codes
N619CK Sikorsky
S-61N
Rotorcraft Croman CORP
White City, Oregon
Standard 2014-03-17 ValidFAA registration status code V: Valid registration. All codes
N196CH Vertol
107
Rotorcraft Columbia Helicopters INC
Aurora, Oregon
Experimental 1993-11-04 ValidFAA registration status code V: Valid registration. All codes
N184CH Kawasaki Vertol
KV107-11
Rotorcraft Columbia Helicopters INC
Aurora, Oregon
Experimental 1976-09-09 ValidFAA registration status code V: Valid registration. All codes
N6672D Boeing-Vertol
107-II
Rotorcraft Columbia Helicopters INC
Portland, Oregon
Multiple 1972-01-10 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 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.