Honeywell TPE331-series
28 aircraft on the U.S. register carry a Honeywell TPE331-series engine, rated at about 2650 horsepower. The Marsh Aviation S-2 is the model most often fitted with it (5 aircraft). The aircraft carrying it were built between 1971 and 2024.
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 Honeywell TPE331-series. FAA spelling: TPE331-SER.
Fitted to model families
Marsh Aviation S-25Cessna 441 Conquest II4General Atomics UBC970003Fairchild SA2273Swearingen SA-2262Mitsubishi MU-22Aero Commander 6811Dornier DO-228-2021Dornier DORNIER 2281General Atomics UHK970001Gray D/Sherick M T GRAY SPECIAL1Gulfstream Am Corp Comm Div 6901
Marsh Aviation S-2 · Cessna 441 Conquest II · General Atomics UBC97000 · Fairchild SA227 · Swearingen SA-226 · Mitsubishi MU-2 · Aero Commander 681 · Dornier DO-228-202 · Dornier DORNIER 228 · General Atomics UHK97000
Where they are owner's state
California11Oregon2Montana2Wyoming1Utah1Texas1Oklahoma1Nevada1North Dakota1Minnesota1
Kind of aircraft
Turboprops24 (86%)Drones4 (14%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Honeywell TPE331-series the component layer
The design is held under 4 type certificates. The FAA has issued 48 airworthiness directives (orders that owners must comply with) that name this engine series.
FAA orders 48 airworthiness directives · newest first
2018-12-102018-22-01 · Turbine Section · engine
2018-10-222018-17-15 · Turbine Engine Combustion Section · engine
2018-07-262018-13-05 · Turbine Engine Reduction Gear · engine
2018-02-282018-02-14 · Turbine Engine Combustion Section · engine
2016-11-282016-21-07 · Fuel control drive · engine
2016-11-042016-18-17 · Compressor impeller · engine
Certificates and bulletins
E4WEType certificate held by Honeywell Aerospace US LLC · 48 models listed · revised March 27, 2026
E2WEType certificate held by Honeywell Aerospace US LLC · 27 models listed · revised March 27, 2026
E18NEType certificate held by Honeywell Aerospace US LLC · 6 models listed · revised March 27, 2026
E3WEType certificate held by Honeywell Aerospace US LLC · 6 models listed · revised March 27, 2026
Safety bulletins 3 · 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
Fitted to
- Marsh Aviation S-2 5 with this engine series
- Cessna 441 Conquest II 4 with this engine series
- General Atomics UBC97000 3 with this engine series
- Fairchild SA227 3 with this engine series
- Swearingen SA-226 2 with this engine series
- Mitsubishi MU-2 2 with this engine series
- Aero Commander 681 1 with this engine series
- Dornier DORNIER 228 1 with this engine series
Where they are
- California 11 of these aircraft
- Oregon 2 of these aircraft
- Montana 2 of these aircraft
- Wyoming 1 of these aircraft
- Utah 1 of these aircraft
Biggest operators
- Usda Forest Service Fepp 5 of these aircraft
- General Atomics Aeronautical Systems INC 4 of these aircraft
- Cbg LLC 2 of these aircraft
Airworthiness
- FAA orders naming the Honeywell TPE331-series 48 airworthiness directives
Analytics
These connections as data: /graph/engine/honeywell-tpe331-series.json · about the eFlight graph.
Aircraft newest certificates first · 28
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N690PL | Gray D/Sherick M T GRAY SPECIAL |
Fixed-wing, single engine | Montana Aircraft Trust INC Trustee Bozeman, Montana |
Experimental | 2026-08-07 | ValidFAA registration status code V: Valid registration. All codes |
| N470SG | General Atomics UBC97000-10 |
Defense drones | General Atomics Aeronautical Systems INC Poway, California |
Experimental | 2026-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N44AF | Mitsubishi MU-2B-60 |
Fixed-wing, multi-engine | Co-owned owner North Dakota |
Standard | 2025-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N681TC | Aero Commander 681 |
Fixed-wing, multi-engine | Rockstar Air LLC Waco, Texas |
Standard | 2025-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N91BF | Cessna 441 |
Fixed-wing, multi-engine | Platinum Storage Properties LLC Wayzata, Minnesota |
Standard | 2024-12-30 | ValidFAA registration status code V: Valid registration. All codes |
| N878JL | Cessna 441 |
Fixed-wing, multi-engine | Conquest 878 LLC Indianapolis, Indiana |
Standard | 2024-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N840M | Rockwell International 690C |
Fixed-wing, multi-engine | D&G Aviation LLC Denver, Colorado |
Standard | 2024-08-31 | ValidFAA registration status code V: Valid registration. All codes |
| N479SG | General Atomics UBC97000-16 |
Defense drones | General Atomics Aeronautical Systems INC Poway, California |
Experimental | 2024-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N75MX | Swearingen SA-226T |
Fixed-wing, multi-engine | National Test Pilot School Mojave, California |
Standard | 2023-05-25 | ValidFAA registration status code V: Valid registration. All codes |
| N916SJ | Cessna 441 |
Fixed-wing, multi-engine | Conquest Aviation LLC Las Vegas, Nevada |
Special flight permit | 2021-11-29 | ValidFAA registration status code V: Valid registration. All codes |
| N260MC | Dornier DORNIER 228-202 |
Fixed-wing, multi-engine | Big Horn Airways INC Sheridan, Wyoming |
Multiple | 2021-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N175SW | Fairchild SA227-AC |
Fixed-wing, multi-engine | Denaina Air Taxi LLC Anchorage, Alaska |
Standard | 2021-03-22 | ValidFAA registration status code V: Valid registration. All codes |
| N360LG | Swearingen SA-226T |
Fixed-wing, multi-engine | N360Lg LLC Helena, Montana |
Standard | 2021-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N779CC | Cessna 441 |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2020-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N390MC | General Atomics UBC97000-16 |
Defense drones | General Atomics Aeronautical Systems INC Poway, California |
Experimental | 2020-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N169CA | Dornier DO-228-202 |
Fixed-wing, multi-engine | Arizona State University Hilo, Hawaii |
Standard | 2019-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N40JJ | Mitsubishi MU-2B-26A |
Fixed-wing, multi-engine | Intercontinental Jet Service CORP Tulsa, Oklahoma |
Standard | 2017-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N343HK | General Atomics UHK97000-15 |
Defense drones | General Atomics Aeronautical Systems INC Poway, California |
Experimental | 2015-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N3061N | Thrush Aircraft Inc S2R-G10 |
Fixed-wing, single engine | Great Plains Spraying INC Colby, Kansas |
Restricted | 2012-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N779BC | Fairchild SA227BC |
Fixed-wing, multi-engine | Cbg LLC Wilsonville, Oregon |
Standard | 2008-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N820DC | Fairchild SA227-DC (C26B) |
Fixed-wing, multi-engine | Cbg LLC Wilsonville, Oregon |
Standard | 2008-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N840PS | Gulfstream Am Corp Comm Div 690C |
Fixed-wing, multi-engine | Chs Leasing LLC Boca Raton, Florida |
Standard | 2005-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N450DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2003-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N445DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2002-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N700AA | Jensen Jay A TURBO COURIER |
Fixed-wing, single engine | Individual owner Utah |
Experimental | 2001-11-01 | ValidFAA registration status code V: Valid registration. All codes |
| N425DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2001-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N426DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2000-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N441DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 1999-02-10 | 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.