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

Honeywell TPE331-10U

4 aircraft on the U.S. register carry a Honeywell TPE331-10U engine, rated at about 940 horsepower. The Swearingen SA227 is the model most often fitted with it (3 aircraft). The aircraft carrying it were built between 1979 and 1982.

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 TPE331-10U. FAA spelling: TPE331-10U.

Fitted to model families

Swearingen SA2273Swearingen SA-2261

Swearingen SA227 · Swearingen SA-226

Where they are owner's state

Texas1Oregon1Oklahoma1Arizona1

Kind of aircraft

Turboprops4 (100%)

When the aircraft were built by decade

012231197031980

What the FAA has certified, ordered and been told about the Honeywell TPE331-10U the component layer

The design is held under 1 type certificate (E4WE, held by Honeywell Aerospace US LLC). The FAA has issued 26 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 26 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

All orders naming the Honeywell TPE331-10U

Certificates and bulletins

E4WEType certificate held by Honeywell Aerospace US LLC · 48 models listed · revised March 27, 2026

Safety bulletins 2 · advice, not orders

2016-07-22NE-16-19 · Turbine Engine Compressor Section Stator Nozzle Distress
2016-07-11NE-16-18 · Power Lever Loss of Power Control

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
Airworthiness

These connections as data: /graph/engine/honeywell-tpe331-10u.json · about the eFlight graph.

Aircraft newest certificates first · 4

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N507JV Swearingen
SA227-TT
Fixed-wing, multi-engine 3Bbs Aviation LLC
Midland, Texas
Standard 2023-08-10 ValidFAA registration status code V: Valid registration. All codes
N117CC Swearingen
SA226-T(B)
Fixed-wing, multi-engine Ev Advisors LLC
Scottsdale, Arizona
Standard 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N227JT Swearingen
SA227-TT
Fixed-wing, multi-engine Co-owned owner
Oregon
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N788CC Swearingen
SA227-TT
Fixed-wing, multi-engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2017-10-05 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.