Honeywell TPE331-14GR
12 aircraft on the U.S. register carry a Honeywell TPE331-14GR engine, rated at about 1650 horsepower. The Marsh Aviation S-2 is the model most often fitted with it (10 aircraft). The aircraft carrying it were built between 2001 and 2008.
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 TPE331-14GR. FAA spelling: TPE331-14GR.
Fitted to model families
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 Honeywell TPE331-14GR the component layer
The design is held under 1 type certificate (E18NE, held by Honeywell Aerospace US LLC). The FAA has issued 2 airworthiness directives (orders that owners must comply with) that name this engine series.
FAA orders 2 airworthiness directives · newest first
Certificates and bulletins
Safety bulletins 1 · 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
- Marsh Aviation S-2 10 with this engine series
- Air Tractor Inc AT-802 2 with this engine series
- California 10 of these aircraft
- Montana 2 of these aircraft
- Usda Forest Service Fepp 9 of these aircraft
- New Frontier Aviation LLC 2 of these aircraft
- FAA orders naming the Honeywell TPE331-14GR 2 airworthiness directives
These connections as data: /graph/engine/honeywell-tpe331-14gr.json · about the eFlight graph.
Aircraft newest certificates first · 12
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N173TA | Air Tractor Inc AT-802A |
Fixed-wing, single engine | New Frontier Aviation LLC Fort Benton, Montana |
Restricted | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N855NF | Air Tractor Inc AT-802A |
Fixed-wing, single engine | New Frontier Aviation LLC Fort Benton, Montana |
Restricted | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N436DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service - Fepp Mcclellan, California |
Restricted | 2013-01-15 | ValidFAA registration status code V: Valid registration. All codes |
| N442DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Experimental | 2003-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N448DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2003-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N440DF | 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 |
| N449DF | 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 |
| N422DF | 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 |
| N424DF | 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 |
| N427DF | 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 |
| N431DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2000-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N435DF | Marsh Aviation S-2F3AT |
Fixed-wing, multi-engine | Usda Forest Service Fepp Mcclellan, California |
Restricted | 2000-02-01 | 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.