Franklin 6V 350 series
134 aircraft on the U.S. register carry a Franklin 6V 350 series engine, rated at about 235 horsepower. The Maule M-4 is the model most often fitted with it (47 aircraft). The aircraft carrying it were built between 1947 and 1974.
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 Franklin 6V 350 series. FAA spelling: 6V 350 SERIES.
Fitted to model families
Maule M-447S.O.C.A.T.A. MS89419Siai-Marchetti S.205/22R18Bell 4712Cessna 172 Skyhawk10Maule M-58Cessna 175 Skylark8Hiller UH-127Bell-Carson 471Bell-K-Copter 47G1Bellanca 141Piper PA-23 Apache and Aztec1
Maule M-4 · S.O.C.A.T.A. MS894 · Siai-Marchetti S.205/22R · Bell 47 · Cessna 172 Skyhawk · Maule M-5 · Cessna 175 Skylark · Hiller UH-12 · Bell-Carson 47 · Bell-K-Copter 47G
Where they are owner's state
Texas13California13Alaska8Minnesota7Florida7Washington5North Carolina5Montana5Idaho5Georgia5
Kind of aircraft
Piston singles112 (84%)Helicopters21 (16%)Piston twins1 (0.7%)
When the aircraft were built by decade
Connections how this engine series links to the rest of the register
Fitted to
- Maule M-4 47 with this engine series
- S.O.C.A.T.A. MS894 19 with this engine series
- Siai-Marchetti S.205/22R 18 with this engine series
- Bell 47 12 with this engine series
- Cessna 172 Skyhawk 10 with this engine series
- Maule M-5 8 with this engine series
- Cessna 175 Skylark 8 with this engine series
- Hiller UH-12 7 with this engine series
Where they are
- Texas 13 of these aircraft
- California 13 of these aircraft
- Alaska 8 of these aircraft
- Minnesota 7 of these aircraft
- Florida 7 of these aircraft
Biggest operators
- Valiant Air Command INC 1 of these aircraft
- Strategic Aircraft Management LLC 1 of these aircraft
Analytics
These connections as data: /graph/engine/franklin-6v-350-series.json · about the eFlight graph.
Aircraft newest certificates first · 134
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N33507 | Bell 47G |
Rotorcraft | Gooney Bird Group INC Non Profit CORP Templeton, California |
Experimental | 2026-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N32BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Crowe Jordan F Rutherfordton, North Carolina |
Standard | 2026-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N5558T | Cessna 172E |
Fixed-wing, single engine | Hills Holding Newark, Delaware |
Standard | 2026-05-29 | ValidFAA registration status code V: Valid registration. All codes |
| N948W | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Winston Tripp Aviation LLC Easley, South Carolina |
Standard | 2026-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N9HP | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Fouga Tradewind LLC Clayton, Georgia |
Standard | 2026-03-15 | ValidFAA registration status code V: Valid registration. All codes |
| N5315V | Hiller UH-12C |
Rotorcraft | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N989WA | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 2026-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2174B | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner New Jersey |
Standard | 2026-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N40606 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-01-02 | ValidFAA registration status code V: Valid registration. All codes |
| N2030U | Maule M-4-220C |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N36BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-09-20 | ValidFAA registration status code V: Valid registration. All codes |
| N40341 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N5072R | Hiller UH-12B |
Rotorcraft | Co-owned owner Washington |
Standard | 2025-05-27 | ValidFAA registration status code V: Valid registration. All codes |
| N451YW | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2025-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N2028U | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N37BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2025-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N40645 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2025-03-20 | ValidFAA registration status code V: Valid registration. All codes |
| N3740G | Bell 47G |
Rotorcraft | Skypro Jacksonville, Florida |
Standard | 2025-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2074U | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N718AB | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Massachusetts |
Standard | 2025-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N221KM | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2024-10-16 | ValidFAA registration status code V: Valid registration. All codes |
| N330M | Hiller UH-12A |
Rotorcraft | Individual owner Virginia |
Multiple | 2024-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N51207 | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner Oregon |
Standard | 2024-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N40676 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2024-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N264HU | Maule M-4-220C |
Fixed-wing, single engine | Spearhead Aviation INC Parker, Colorado |
Standard | 2024-03-23 | ValidFAA registration status code V: Valid registration. All codes |
| N992WA | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2023-12-06 | ValidFAA registration status code V: Valid registration. All codes |
| N305Y | Stump Great Lakes 2T-1A-E |
Fixed-wing, single engine | Strategic Aircraft Management LLC Fairbanks, Alaska |
Experimental | 2023-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N7274M | Cessna 175 |
Fixed-wing, single engine | Co-owned owner Montana |
Standard | 2023-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N62002 | Maule M-5-220C |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2023-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N40807 | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2023-08-02 | ValidFAA registration status code V: Valid registration. All codes |
| N40656 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Nebraska |
Standard | 2023-07-05 | ValidFAA registration status code V: Valid registration. All codes |
| N8221X | Cessna 172B |
Fixed-wing, single engine | Pegasus Endeavors LLC Kalispell, Montana |
Standard | 2023-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N982WA | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Jts Aircraft LLC Rock Hill, South Carolina |
Standard | 2023-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N40619 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2023-05-25 | ValidFAA registration status code V: Valid registration. All codes |
| N40324 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2023-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N40348 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner California |
Standard | 2023-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N40653 | Maule M-4-220C |
Fixed-wing, single engine | Horizon Adventures LLC Alamogordo, New Mexico |
Standard | 2023-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N2830W | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 2023-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N35BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2023-04-12 | ValidFAA registration status code V: Valid registration. All codes |
| N9GM | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2023-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N9237Z | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2023-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N4703W | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Co-owned owner New Mexico |
Standard | 2023-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N950B | Bell 47G |
Rotorcraft | Igwt Helicopters Williford, Arkansas |
Standard | 2023-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N7732 | Bell-K-Copter 47G |
Rotorcraft | South Atlanta Helicopters LLC Hampton, Georgia |
Standard | 2022-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N9010Q | Hiller UH-12C |
Rotorcraft | Individual owner Texas |
Standard | 2022-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N2039U | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2022-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N40329 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2022-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N783TT | Hiller UH-12C |
Rotorcraft | Individual owner Texas |
Standard | 2022-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N19WX | Maule M-4-220C |
Fixed-wing, single engine | Montana Wildlife Observation LLC Kalispell, Montana |
Standard | 2022-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N140B | Bell 47D1 |
Rotorcraft | L Bachman LLC Independence, Iowa |
Standard | 2022-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N33BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Runway 23 LLC Wurtsboro, New York |
Standard | 2022-03-07 | ValidFAA registration status code V: Valid registration. All codes |
| N9391B | Cessna 175 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2022-03-01 | ValidFAA registration status code V: Valid registration. All codes |
| N2010U | Maule M-4-220C |
Fixed-wing, single engine | Skydotcom LLC Inver Grove Hgts, Minnesota |
Standard | 2022-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N985WA | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2022-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N35653 | Cessna 172I |
Fixed-wing, single engine | Fitzgerald Bryan L Craig, Alaska |
Standard | 2021-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N2VB | Maule M-5-220C |
Fixed-wing, single engine | Co-owned owner Oregon |
Standard | 2021-09-28 | ValidFAA registration status code V: Valid registration. All codes |
| N62013 | Maule M-5-220C |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2021-05-13 | ValidFAA registration status code V: Valid registration. All codes |
| N62BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Individual owner South Dakota |
Standard | 2021-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N2012U | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner Colorado |
Standard | 2021-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N736W | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2021-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N51587 | Maule M-5-220C |
Fixed-wing, single engine | Werner Platte River Crossings LP Douglas, Wyoming |
Standard | 2020-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N40669 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner California |
Standard | 2020-07-17 | ValidFAA registration status code V: Valid registration. All codes |
| N51647 | Maule M-5-220C |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2020-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N7114M | Cessna 175 |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2020-03-02 | ValidFAA registration status code V: Valid registration. All codes |
| N972WA | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2020-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N61BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2019-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N2032U | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2019-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N40617 | Maule M-4-220C |
Fixed-wing, single engine | Morelli John Anthony Grapevine, Texas |
Standard | 2019-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N3550S | Cessna 172E |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2019-01-03 | ValidFAA registration status code V: Valid registration. All codes |
| N6849E | Cessna 175A |
Fixed-wing, single engine | Co-owned owner South Dakota |
Standard | 2018-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N40330 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2018-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N9865M | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2018-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N207KM | Maule M-4-220C |
Fixed-wing, single engine | Individual owner California |
Standard | 2018-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N9734C | Hiller UH-12C |
Rotorcraft | Hillsboro Capital INC Hillsboro, Tennessee |
Multiple | 2018-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N929B | Bell 47D1 |
Rotorcraft | Valiant Air Command INC Titusville, Florida |
Restricted | 2018-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N40657 | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner Nebraska |
Standard | 2018-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N2020U | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2018-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N220PM | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2017-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N62026 | Maule M-5-220C |
Fixed-wing, single engine | Individual owner North Dakota |
Standard | 2017-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N40309 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2017-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2473B | Bell 47G |
Rotorcraft | Individual owner California |
Standard | 2017-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N40319 | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner Montana |
Standard | 2017-08-03 | ValidFAA registration status code V: Valid registration. All codes |
| N92WV | Maule M-4-220C |
Fixed-wing, single engine | Co-owned owner Missouri |
Standard | 2017-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N7628M | Cessna 175 |
Fixed-wing, single engine | Individual owner New Hampshire |
Standard | 2017-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N2425L | Cessna 172H |
Fixed-wing, single engine | Individual owner California |
Standard | 2016-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N74413 | Bellanca 14-13-2 |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2016-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N51BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2015-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N6355 | Bell 47G |
Rotorcraft | Individual owner Michigan |
Standard | 2015-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N51127 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2014-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N959W | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Individual owner Iowa |
Standard | 2014-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N44BF | S.O.C.A.T.A. MS894A |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2014-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N2469B | Bell 47G |
Rotorcraft | Individual owner Texas |
Multiple | 2014-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N986WA | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2014-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N40354 | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Alabama |
Standard | 2014-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N3859S | Cessna 172E |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2013-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2077U | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Wisconsin |
Standard | 2013-04-12 | ValidFAA registration status code V: Valid registration. All codes |
| N62027 | Maule M-5-220C |
Fixed-wing, single engine | Individual owner California |
Standard | 2012-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1452P | Piper PA-23 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 2012-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N735W | Siai-Marchetti S.205/22R |
Fixed-wing, single engine | Individual owner Oklahoma |
Standard | 2012-08-15 | ValidFAA registration status code V: Valid registration. All codes |
| N986R | Maule M-4-220C |
Fixed-wing, single engine | Individual owner Wisconsin |
Standard | 2012-03-05 | ValidFAA registration status code V: Valid registration. All codes |
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.