Hirth 4201
5 aircraft on the U.S. register carry a Hirth 4201 engine, rated at about 15 horsepower. The Martin UAV (Shield AI) V-BAT is the model most often fitted with it (4 aircraft). The aircraft carrying it were built between 2018 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 Hirth 4201. FAA spelling: 4201.
Fuel: 100LL avgas; the maker also approves Car gasoline (mogas), UL91 unleaded avgas, UL94 unleaded avgas.
Fitted to model families
Model families, as a table
| aircraft | |
|---|---|
| Martin UAV (Shield AI) V-BAT | 4 |
| Carson Robert T GLA-STAR | 1 |
Martin UAV (Shield AI) V-BAT · Carson Robert T GLA-STAR
Where they are owner's state
Kind of aircraft
By kind, as a table
| aircraft | share | |
|---|---|---|
| Drones | 4 | 80% |
| Piston singles | 1 | 20% |
Connections how this engine series links to the rest of the register
- Martin UAV (Shield AI) V-BAT 4 with this engine series
- Shield Ai INC 1 of these aircraft
The whole map of how records connect · these connections as data: /graph/engine/hirth-4201.json.
Aircraft newest certificates first · 5
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N775MV | Martin UAV (Shield AI) V-BAT |
Defense drones | Shield Ai INC Frisco, Texas |
Experimental | 2024-07-04 | ValidFAA registration status code V: Valid registration. All codes |
| N411VB | Martin UAV (Shield AI) VBAT |
Defense drones | Northrop Grumman Sierra Vista, Arizona |
Experimental | 2020-01-16 | Renewal notice sentFAA registration status code 25: First notice for registration renewal. All codes |
| N412VB | Martin UAV (Shield AI) VBAT |
Defense drones | Northrup Grumman Sierra Vista, Arizona |
Experimental | 2020-01-16 | Renewal notice sentFAA registration status code 25: First notice for registration renewal. All codes |
| N413VB | Martin UAV (Shield AI) VBAT |
Defense drones | Northrop Grumman Sierra Vista, Arizona |
Experimental | 2020-01-16 | Renewal notice sentFAA registration status code 25: First notice for registration renewal. All codes |
| N47JY | Carson Robert T GLA-STAR |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2019-10-24 | 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), November 10, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.