# Franklin 6V-335 series

- Type: Engine model (FAA registry)
- Registry code: 27039
- Manufacturer (registry): FRANKLIN
- Model: 6V-335 SERIES
- Engine type: Reciprocating
- Power: 200 hp
- Data sheet: [TCDS E-244](https://openairdocs.org/tcds/E-244) (OpenAirDocs)
- Holder: Franklin Sp. z.o.o.
- Installed in: 29 registered aircraft
- Page: https://openairdocs.org/engine/franklin-6v-335-series

The registry names only the engine series, so ADs for every model in the series are matched.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (29)

- [N1023G](https://openairdocs.org/aircraft/N1023G): [Continental Title Trust LLC Trustee](https://openairdocs.org/faa-owner/CONTINENTAL%20TITLE%20TRUST%20LLC%20TRUSTEE), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita), built 1953, S/N 51-16307
- [N1048P](https://openairdocs.org/aircraft/N1048P): [Aviation Solution Experts LLC](https://openairdocs.org/faa-owner/AVIATION%20SOLUTION%20EXPERTS%20LLC), [St Marys, IA](https://openairdocs.org/faa-place/IA/St%20Marys), S/N 635
- [N11ZL](https://openairdocs.org/aircraft/N11ZL): [Hogan Danny W](https://openairdocs.org/faa-owner/HOGAN%20DANNY%20W), [Poteau, OK](https://openairdocs.org/faa-place/OK/Poteau), S/N ZL-1
- [N132BR](https://openairdocs.org/aircraft/N132BR): [Steinheiser Terry N](https://openairdocs.org/faa-owner/STEINHEISER%20TERRY%20N), [Renfrew, PA](https://openairdocs.org/faa-place/PA/Renfrew), built 1951, S/N 51-332
- [N1348P](https://openairdocs.org/aircraft/N1348P): [Carey James D](https://openairdocs.org/faa-owner/CAREY%20JAMES%20D), [Winterset, IA](https://openairdocs.org/faa-place/IA/Winterset), S/N 892
- [N1348X](https://openairdocs.org/aircraft/N1348X): [Pockrus Pat B](https://openairdocs.org/faa-owner/POCKRUS%20PAT%20B), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1957, S/N 901
- [N147CG](https://openairdocs.org/aircraft/N147CG): [Magic Carpet Ride Aviation LLC](https://openairdocs.org/faa-owner/MAGIC%20CARPET%20RIDE%20AVIATION%20LLC), [Columbus, OH](https://openairdocs.org/faa-place/OH/Columbus), built 1956, S/N 1044
- [N156PT](https://openairdocs.org/aircraft/N156PT): [Wiger Theodore L](https://openairdocs.org/faa-owner/WIGER%20THEODORE%20L), [Falcon Heights, MN](https://openairdocs.org/faa-place/MN/Falcon%20Heights), built 1956, S/N 851
- [N17129](https://openairdocs.org/aircraft/N17129): [Dreyer Elwain C](https://openairdocs.org/faa-owner/DREYER%20ELWAIN%20C), [Cardington, OH](https://openairdocs.org/faa-place/OH/Cardington), built 1951, S/N 51-16189
- [N239SB](https://openairdocs.org/aircraft/N239SB): [Cottage Grove, OR](https://openairdocs.org/faa-place/OR/Cottage%20Grove), built 1956, S/N 800, Sale reported, pending cancellation
- [N252LG](https://openairdocs.org/aircraft/N252LG): [Alaska Army Aviation Museum Inc](https://openairdocs.org/faa-owner/ALASKA%20ARMY%20AVIATION%20MUSEUM%20INC), [Big Lake, AK](https://openairdocs.org/faa-place/AK/Big%20Lake), built 1973, S/N 55-4096
- [N2801B](https://openairdocs.org/aircraft/N2801B): [Taz Air Service Inc](https://openairdocs.org/faa-owner/TAZ%20AIR%20SERVICE%20INC), [Middletown, DE](https://openairdocs.org/faa-place/DE/Middletown), S/N 1526
- [N3877L](https://openairdocs.org/aircraft/N3877L): [Jarrell Stephen L](https://openairdocs.org/faa-owner/JARRELL%20STEPHEN%20L), [Edgewood, NM](https://openairdocs.org/faa-place/NM/Edgewood), built 1954, S/N 674
- [N456GR](https://openairdocs.org/aircraft/N456GR): [R & L Heli Aviation LLC](https://openairdocs.org/faa-owner/R%20%26%20L%20HELI%20AVIATION%20LLC), [Boynton Beach, FL](https://openairdocs.org/faa-place/FL/Boynton%20Beach), built 2011, S/N 28229-1
- [N461KB](https://openairdocs.org/aircraft/N461KB): [Bd Helo Enterprises LLC](https://openairdocs.org/faa-owner/BD%20HELO%20ENTERPRISES%20LLC), [Boynton Beach, FL](https://openairdocs.org/faa-place/FL/Boynton%20Beach), built 2011, S/N 23229-2
- [N472GD](https://openairdocs.org/aircraft/N472GD): [Dunn Gary M](https://openairdocs.org/faa-owner/DUNN%20GARY%20M), [Galesburg, MI](https://openairdocs.org/faa-place/MI/Galesburg), built 1953, S/N 988
- [N5025J](https://openairdocs.org/aircraft/N5025J): [Anderson Mike DBA](https://openairdocs.org/faa-owner/ANDERSON%20MIKE%20DBA), [Muskogee, OK](https://openairdocs.org/faa-place/OK/Muskogee), S/N 726
- [N5301V](https://openairdocs.org/aircraft/N5301V): [Vrem Kelly L](https://openairdocs.org/faa-owner/VREM%20KELLY%20L), [Sutton, AK](https://openairdocs.org/faa-place/AK/Sutton), built 1953, S/N 563
- [N5321V](https://openairdocs.org/aircraft/N5321V): [Gates Steven](https://openairdocs.org/faa-owner/GATES%20STEVEN), [Midlothian, TX](https://openairdocs.org/faa-place/TX/Midlothian), built 1956, S/N 822
- [N547SB](https://openairdocs.org/aircraft/N547SB): [Sequeira Michael J](https://openairdocs.org/faa-owner/SEQUEIRA%20MICHAEL%20J), [Troy, MO](https://openairdocs.org/faa-place/MO/Troy), built 1954, S/N 5
- [N552DR](https://openairdocs.org/aircraft/N552DR): [Mussche Roger H](https://openairdocs.org/faa-owner/MUSSCHE%20ROGER%20H), [Lafayette, IN](https://openairdocs.org/faa-place/IN/Lafayette), built 1956, S/N 562261
- [N555EN](https://openairdocs.org/aircraft/N555EN): [Setnar Stephen R](https://openairdocs.org/faa-owner/SETNAR%20STEPHEN%20R), [Butler, PA](https://openairdocs.org/faa-place/PA/Butler), built 1947, S/N 6
- [N62171](https://openairdocs.org/aircraft/N62171): [Coyne Patrick J](https://openairdocs.org/faa-owner/COYNE%20PATRICK%20J), Tuam Co Galway, S/N GF-2, Non-citizen corporation, flight hours not reported
- [N74898](https://openairdocs.org/aircraft/N74898): [James David R](https://openairdocs.org/faa-owner/JAMES%20DAVID%20R), [Wayne, MI](https://openairdocs.org/faa-place/MI/Wayne), S/N AIAT-68
- [N780C](https://openairdocs.org/aircraft/N780C): [Housken George E](https://openairdocs.org/faa-owner/HOUSKEN%20GEORGE%20E), [Gardnerville, NV](https://openairdocs.org/faa-place/NV/Gardnerville), built 1956, S/N 780
- [N7AR](https://openairdocs.org/aircraft/N7AR): [Aircraft Sales LLC](https://openairdocs.org/faa-owner/AIRCRAFT%20SALES%20LLC), [Caledonia, MI](https://openairdocs.org/faa-place/MI/Caledonia), built 1963, S/N WH5001
- [N8178H](https://openairdocs.org/aircraft/N8178H): [Rotor Wing Nuts LLC](https://openairdocs.org/faa-owner/ROTOR%20WING%20NUTS%20LLC), [Kansas City, MO](https://openairdocs.org/faa-place/MO/Kansas%20City), built 1950, S/N 178
- [N900JR](https://openairdocs.org/aircraft/N900JR): [Hoelzen Robert D Trustee](https://openairdocs.org/faa-owner/HOELZEN%20ROBERT%20D%20TRUSTEE), [Kent, WA](https://openairdocs.org/faa-place/WA/Kent), built 1952, S/N 664
- [N9019T](https://openairdocs.org/aircraft/N9019T): [Berry Darrel L](https://openairdocs.org/faa-owner/BERRY%20DARREL%20L), [Camden, TN](https://openairdocs.org/faa-place/TN/Camden), S/N 697

## NTSB investigations (35)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN23LA383](https://openairdocs.org/ntsb/CEN23LA383), Aug 27, 2023: Hiller UH-12A (N8178H), Mosby, MO, substantial damage. Probable cause: The pilot’s failure to maintain adequate rotor rpm which resulted in a loss of control and impact with terrain.
- [NTSB ERA22LA039](https://openairdocs.org/ntsb/ERA22LA039), Oct 31, 2021: Bell 47D1 (N132BR), Zelienople, PA, substantial damage. Probable cause: A total loss of engine power for reasons that could not be determined.
- [NTSB CEN21LA124](https://openairdocs.org/ntsb/CEN21LA124), Jan 12, 2021: Hiller UH12C (N552DR), Lafayette, IN, substantial damage. Probable cause: The pilot’s failure to maintain control of the helicopter shortly after liftoff into a hover, which resulted in a dynamic rollover when the left landing skid contacted the ground.
- [NTSB CHI08LA151](https://openairdocs.org/ntsb/CHI08LA151), Jun 1, 2008: Bell 47D1 (N74898), Carrollton, OH, substantial damage. Probable cause: The airframe vibration for an undetermined reason.
- [NTSB DEN03LA051](https://openairdocs.org/ntsb/DEN03LA051), Mar 18, 2003: Panzl PAN (N11ZL), Vernal, UT, substantial damage. Probable cause: the pilot's inadequate preflight preparation and his lack of familiarity with the airplane, which subsequently resulted in fuel starvation to the engine. Contributing factors were unfavorable wind…
- [NTSB MIA93FA121](https://openairdocs.org/ntsb/MIA93FA121), May 16, 1993: Bell 47-G (N970B), Parker, FL, destroyed, 2 fatal. Probable cause: the misjudgement of the distance by the nonrated pilot-in-command and subsequent collision with a tree. Contributing to the accident was the lack of helicopter experience of the pilot-in-command.
- [NTSB FTW93LA047](https://openairdocs.org/ntsb/FTW93LA047), Dec 2, 1992: Hiller UH12B (N1048P), Justin, TX, substantial damage. Probable cause: FAILURE OF THE MAIN ROTOR SYSTEM FOR UNDETERMINED REASONS. A FACTOR WAS THE LACK OF SUITABLE TERRAIN AT THE PILOT'S DISPOSAL.
- [NTSB BFO92LA102](https://openairdocs.org/ntsb/BFO92LA102), Jul 15, 1992: Bell 47G (N3109G), Southwick, MA, substantial damage. Probable cause: IMPROPER ADJUSTMENT OF THE STABILIZER CONTROL SYSTEM BY MAINTENANCE PERSONNEL.
- [NTSB NYC91LA189](https://openairdocs.org/ntsb/NYC91LA189), Jul 27, 1991: Hiller UH-12B (N62246), Westfield, MA, substantial damage. Probable cause: THE PILOT'S FAILURE TO REFUEL RESULTING IN A POWER FAILURE DUE TO FUEL EXHAUSTION, AND SUBSEQUENT FORCED LANDING IN UNSUITABLE TERRAIN.
- [NTSB FTW91LA126](https://openairdocs.org/ntsb/FTW91LA126), Jul 24, 1991: Bell 47D-1 (N3575), Provencal, LA, substantial damage. Probable cause: FUEL LEAKAGE FROM THE FUEL DRAIN VALVE. A FACTOR WAS THE INACCESSIBILITY OF SUITABLE TERRAIN FOR FORED LANDING.
- [NTSB NYC89LA025](https://openairdocs.org/ntsb/NYC89LA025), Nov 10, 1988: Bell 47G (N2AR), Champion, NY, substantial damage. Probable cause: THE PILOT WAS UNABLE TO SUSTAIN FLIGHT DUE TO A SEVERE DOWNDRAFT ACCOMPANIED BY A POWER LOSS AT A LOW ALTITUDE.
- [NTSB ATL88LA232](https://openairdocs.org/ntsb/ATL88LA232), Aug 20, 1988: Hiller UH-12A (N4828E), Paducah, KY, substantial damage
- [NTSB FTW87LA107](https://openairdocs.org/ntsb/FTW87LA107), Apr 25, 1987: Bell 47D1 (N3575), Ardmore, OK, substantial damage
- [NTSB LAX85LA309](https://openairdocs.org/ntsb/LAX85LA309), Jul 7, 1985: Hiller UH-12B (N1048P), Durham, CA, substantial damage
- [NTSB NYC85FGM02](https://openairdocs.org/ntsb/NYC85FGM02), Nov 15, 1984: Hiller UH-12B (N17129), Butler, PA, substantial damage
- [NTSB MKC84LA102](https://openairdocs.org/ntsb/MKC84LA102), Mar 15, 1984: Hiller UH-12B (N1021Y), Ulysses, KS, substantial damage
- [NTSB LAX84FA106](https://openairdocs.org/ntsb/LAX84FA106), Dec 16, 1983: Hiller UH-12A (N8108H), Van Nuys, CA, substantial damage
- [NTSB NYC81DFJ06](https://openairdocs.org/ntsb/NYC81DFJ06), Feb 27, 1981: Hiller UH-12B (N90803), Jamestown, NY, substantial damage
- [NTSB MIA80FA112](https://openairdocs.org/ntsb/MIA80FA112), Sep 22, 1980: Cambell 47-D1G (N3109G), Panama City, FL, destroyed, 1 fatal
- [NTSB FTW79DPJ37](https://openairdocs.org/ntsb/FTW79DPJ37), Sep 12, 1979: Bell 47D1 (N3575), Ardmore, OK, substantial damage
- [NTSB MIA79DKT30](https://openairdocs.org/ntsb/MIA79DKT30), Jan 7, 1979: Bell 47G (N2AR), Opa Locka, FL, destroyed
- [NTSB MIA77DLA38](https://openairdocs.org/ntsb/MIA77DLA38), Jul 18, 1977: Bell 47D1 (N3109G), Panama City, FL, substantial damage
- [NTSB MIA77DLA37](https://openairdocs.org/ntsb/MIA77DLA37), Jun 17, 1977: Bell 47D1G (N3109G), Panama Cy Bch, FL, substantial damage
- [NTSB SEA77DYM34](https://openairdocs.org/ntsb/SEA77DYM34), May 28, 1977: Hiller Acft UH-12C (N8108H), Albany, OR, destroyed
- [NTSB MIA77DKJ37](https://openairdocs.org/ntsb/MIA77DKJ37), May 15, 1977: Bell 47D1 (N74898), Ozark, AL, substantial damage
- [NTSB MIA77DKG08](https://openairdocs.org/ntsb/MIA77DKG08), Dec 12, 1976: Bell 47D1 (N3575), Vanceville, GA, substantial damage
- [NTSB MIA76DKJ53](https://openairdocs.org/ntsb/MIA76DKJ53), Mar 6, 1976: Bell 47D1 (N3109G), Enterprise, AL, substantial damage
- [NTSB SEA76FYC20](https://openairdocs.org/ntsb/SEA76FYC20), Sep 20, 1975: Hiller Acft UH-12B (N8108H), Brownsville, OR, substantial damage
- [NTSB MIA75FKJ54](https://openairdocs.org/ntsb/MIA75FKJ54), Apr 7, 1975: Bell 47D1-G (N3109G), Abbeville, AL, destroyed
- [NTSB MIA72DLA26](https://openairdocs.org/ntsb/MIA72DLA26), Dec 17, 1971: Bell 47D1 (N3109G), Milton, FL, substantial damage
- [NTSB SEA71FYC42](https://openairdocs.org/ntsb/SEA71FYC42), Jun 11, 1971: Hiller UH12A (N8178H), Brooks, OR, destroyed, 1 fatal
- [NTSB MKC68A0049](https://openairdocs.org/ntsb/MKC68A0049), Feb 6, 1968: Bell 47G (N970B), Onawa, IA, destroyed
- [NTSB OAK68A0036](https://openairdocs.org/ntsb/OAK68A0036), Oct 15, 1967: Hiller UH-12C (N5321V), Riverdale, CA, substantial damage
- [NTSB MIA66A0006](https://openairdocs.org/ntsb/MIA66A0006-201538), Jul 11, 1965: Bell 47-D1 (N3109G), Panama City, FL, substantial damage
- [NTSB UNK64X4188](https://openairdocs.org/ntsb/UNK64X4188), Sep 27, 1964: Bell 47G (N970B), Bakersfield, CA, substantial damage

## FAA accident and incident reports (29)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20230827019679A](https://openairdocs.org/incident/20230827019679A), Aug 27, 2023: Hiller UH-12A (N8178H), Mosby, MO, Substantial damage. The pilot was unable to maintain altitude during hover taxi and the tail boom struck the ground.
- [Accident 20211031019149A](https://openairdocs.org/incident/20211031019149A), Oct 31, 2021: Bell 47D1 (N132BR), Zelienople, PA, Substantial damage. Aircraft sustained engine failure on departure from kpjc. Pilot performed autorotation due to engine failure. Rt skid gear collapsed on landing due to landing…
- [Accident 20210112000479A](https://openairdocs.org/incident/20210112000479A), Jan 12, 2021: Hiller - World Helicopters UH-12C (N552DR), Lafayette, IN, Substantial damage. N552DR a UH-12C lost control after liftoff from a private residence. The left skid impacted the ground resulting in a dynamic rollover of the helicopter.
- [Incident 20160521005389I](https://openairdocs.org/incident/20160521005389I), May 21, 2016: Bell 47D1 (N3575), Navarre, FL, Minor damage. While conducting a sightseeing/tour flight with two passengers over Navarre beach, Florida, the pilot stated as he started his approach to the Navarre beach…
- [Accident 20080601840789A](https://openairdocs.org/incident/20080601840789A), Jun 1, 2008: Bell 47D1 (N74898), Amsterdam, OH, Substantial damage. (-23) 5 Min. After TSO, substantial cyclic shakes, reduces control and landed in the farmer's field.
- [Accident 20030318003189A](https://openairdocs.org/incident/20030318003189A), Mar 18, 2003: Amtr PANZL1 (N11ZL), Vernal, UT, Substantial damage. (-23) On 3-18-03 pilot vigoren was on his first flight from steamboat springs, Colorado to Vernal, Utah, when the engine failed and he made an emergency…
- [Incident 19960602020389I](https://openairdocs.org/incident/19960602020389I), Jun 2, 1996: Bell 47D1 (N132BR), Bristol, NH, Minor damage. Narrative: engine lost some power after t/o due to push rod breaking through engine casing and damaging engine cooling fan and control servo. Pilot elected to…
- [Accident 19930516013809A](https://openairdocs.org/incident/19930516013809A), May 16, 1993: Bell 47G (N970B), Parker, FL, Destroyed, 2 fatal. Struck tree on approach to small field. Crashed and burned. Helicopter student. Not rated. Drugs for heart surgery.
- [Accident 19921202048999A](https://openairdocs.org/incident/19921202048999A), Dec 2, 1992: Hiller UH12B (N1048P), Justin, TX, Substantial damage. Reported severe vibration. Made autorotation to hay field. Overrotated on flare. Tail hit. Rotors chopped tailboom.
- [Accident 19920715025699A](https://openairdocs.org/incident/19920715025699A), Jul 15, 1992: Bell 47D1 (N3109G), Southwick, MA, Substantial damage. During hover test right uncontrollable turn began until rotors hit ground. Hydraulic dampners improper adjustment.
- [Accident 19910727030319A](https://openairdocs.org/incident/19910727030319A), Jul 27, 1991: Hiller UH12B (N62246), Westfield, MA, Substantial damage. Off course,landed for position. Departed minimum fuel and ran out of fuel. Landed in cemetery on a headstone.
- [Accident 19910724029759A](https://openairdocs.org/incident/19910724029759A), Jul 24, 1991: Bell 47D1 (N3575), Provencal, LA, Substantial damage. Engine quit on aerial fire burn survey. Landed on slope. Rolled over. Departed minimum fuel. Depleted by leaky sump
- [Incident 19890714045549I](https://openairdocs.org/incident/19890714045549I), Jul 14, 1989: Hiller UH12B (N5321V), Norwalk, OH, Minor damage. Lost engine power on approach. Autorotated to ground. Accessory case was broken and oil drained out.
- [Accident 19881110050319A](https://openairdocs.org/incident/19881110050319A), Nov 10, 1988: Bell 47G (N2AR), Champion, NY, Substantial damage. Encountered severe turbulence on powerline patrol. Engine quit on severe downdraft. Negative gs shut off fuel.
- [Accident 19880820034309A](https://openairdocs.org/incident/19880820034309A), Aug 20, 1988: Hiller UH12A (N4828E), Paducah, KY, Substantial damage. Engine quit on climbout. Autorotated into trees. Found 50 percent water in fuel. Engine accessory case damaged.
- [Accident 19870425021269A](https://openairdocs.org/incident/19870425021269A), Apr 25, 1987: Bell 47D1 (N3575), Ardmore, OK, Substantial damage. The helicopter landed hard causing rotor to strike tailboom. Pilot suspected engine problems and autorotated.
- [Accident 19850707029519A](https://openairdocs.org/incident/19850707029519A), Jul 7, 1985: Hiller UH12B (N1048P), Durham, CA, Substantial damage. Struck powerlines, then ground during approach. Pilot, distracted by a vibration, did not see the powerlines.
- [Accident 19841115062119A](https://openairdocs.org/incident/19841115062119A), Nov 15, 1984: Hiller H23B (N17129), Butler, PA, Substantial damage. No fuel at practice airport. Elected to return to home base upwind. Ran out of fuel a mile short. Landed in trees.
- [Accident 19840315007069A](https://openairdocs.org/incident/19840315007069A), Mar 15, 1984: Hiller UH12B (N1021Y), Ulysses, KS, Substantial damage. Lost tail rotor control. Made hard autorotational landing. Gear box had separated. Fatigue break in attach fittings
- [Accident 19831216061399A](https://openairdocs.org/incident/19831216061399A), Dec 16, 1983: Hiller UH12A (N8108H), Van Nuys, CA, Substantial damage. Engine quit due to water in fuel. Made hard autorotation landing on a roof. Fuel cap gaskets leaked water into fuel
- [Accident 19810227008909A](https://openairdocs.org/incident/19810227008909A), Feb 27, 1981: Hiller UH12B (N90803), Jamestown, NY, Substantial damage. Lost directional control & misused throttle during hover. Helicopter struck power pole.
- [Accident 19800922051959A](https://openairdocs.org/incident/19800922051959A), Sep 22, 1980: Bell 47D (N3109G), Panama City, FL, Destroyed. Indicates helicopter broke-up in flight. Thunderstorms were in area.
- [Accident 19790912031439A](https://openairdocs.org/incident/19790912031439A), Sep 12, 1979: Bell 47D1 (N3575), Ardmore, OK, Substantial damage. Instructor demonstrating low-level autoration. Made hard landing.
- [Accident 19790107000459A](https://openairdocs.org/incident/19790107000459A), Jan 7, 1979: Bell 47G (N2AR), Opa Locka, FL, Destroyed. Practicing running takeoffs in gusty wind. Hit ground hard while air taxi for takeoff.
- [Accident 19770718026499A](https://openairdocs.org/incident/19770718026499A), Jul 18, 1977: Bell 47B3 (N3109G), Panama City, FL, Substantial damage
- [Accident 19770529016599A](https://openairdocs.org/incident/19770529016599A), May 29, 1977: Hiller UH12C (N8108H), Albany, OR, Destroyed. Flying upriver 40-50FT AGL.struck elect transmission wire,fell into river.
- [Accident 19770515010649A](https://openairdocs.org/incident/19770515010649A), May 15, 1977: Bell 47D1 (N74898), Ozark, AL, Substantial damage. Lndd tail low on a downslope.
- [Accident 19761212037429A](https://openairdocs.org/incident/19761212037429A), Dec 12, 1976: Bell 47D1 (N3575), Vanceville, GA, Substantial damage. Settled into water drg pract hover. Student rotorcraft plt.
- [Accident 19750920038669A](https://openairdocs.org/incident/19750920038669A), Sep 20, 1975: Hiller UH12A (N8108H), Brownsville, OR, Destroyed. Clutch pucks charred,clutch drum discolored fm overheat.t/d on rear of skid,m/r struck tailboom.

## Service difficulty reports (1)

As reported by operators and repair stations, by the model named in the report.

- [SDR HMI2002F00000](https://openairdocs.org/sdr/HMI2002F00000), Nov 16, 2002: UNIVERSAL JOINT. FAILED. BEARING FAILURE IN UNIVERSAL JOINT. NOTICED BY VIBRATION IN FLIGHT AND CLICKING SOUND ON SHUT DOWN. INVESTIGATION SHOWED OFF SET IN UNIVERSAL JOINT AND EXCESSIV

## STCs that may be installed (OpenAirDocs) (5)

Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists 6V-335-A
- [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists 6V-335-A
- [STC SE1311SO](https://openairdocs.org/stc/SE1311SO): Installation of Shivers carburetor temperature gauge with a Richter Aero Equipment B-5 carburetor temperature probe. LegacySTC.com. Lists 6V-335-A
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc. Lists 6V-335-A
- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. Lists 6V-335-A

## PMA parts (OpenAirDocs) (583, first 50)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first.

- [72-231114-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126488040520260722204349.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jul 17, 2026
- [AB-357426](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184238701620251216184448.0001): Distributor Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-357426 · Dec 8, 2023
- [AB-382585](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174195818620251216184454.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-382585 · Dec 8, 2023
- [AB-400623](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168816889220251216184444.0001): Ball Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental… · Dec 8, 2023
- [AB-357174](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID160990699020251216184451.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-357174 · Dec 8, 2023
- [ES10-35936-7](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148471542220251216184429.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-35936-7 · Dec 8, 2023
- [AB-382584](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126776576020251216184455.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-382584 · Dec 8, 2023
- [AB-349511](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120405838820251216184440.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-349511 · Dec 8, 2023
- [AB-349326](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116200064020251216184456.0001): Fish Paper. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-349326 · Dec 8, 2023
- [AB-349263](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113648021920251216184506.0001): O-Ring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-349263 · Dec 8, 2023
- [AB-357173](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID105495468820251216184452.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-357173 · Dec 8, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168354325020240301172638.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145217999320240301172658.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118323347220240301172648.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID102475767020240301172654.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162371588220240301172654.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Nov 9, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147034297320240301172656.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Nov 9, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123063929720240301172657.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Nov 9, 2023
- [ES10-400549-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID158172130220230929175036.0001): 200 Series Frame, Lyc Flange. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-400549-2 · Jul 17, 2023
- [ES10-400551-8](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178086668520231025135112.0001): Housing, Distributor. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-400551-8 · Apr 1, 2023
- [ES10-25788](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197042042020230703154012.0001): Bearing, Sleeve. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-357078, 10-25788, 736 · Mar 20, 2023
- [ES10-56513](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157880742420230502200206.0001): Pin, Stop. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-56513 · Feb 9, 2023
- [ES10-357165-20](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117084116020220725141437.0001): Coil, Magneto. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-357165-20, 10-357164-1 · Jun 9, 2022
- [AEF19421](https://drs.faa.gov/browse/excelExternalWindow/F71463A22AF9B03E862585930032B10D.0001): Piston Ring, Chrome Top Compression. Continental Aerospace Technologies Inc · PMA PQ1269CE-D · Replaces 19421 · Jan 6, 2020
- [AEF19370](https://drs.faa.gov/browse/excelExternalWindow/A67A1B1E030CA306862585930032B0D4.0001): Piston, 4.500 Cylinder Bore. Continental Aerospace Technologies Inc · PMA PQ1269CE-D · Replaces 19370 · Jan 6, 2020
- [AEF19893](https://drs.faa.gov/browse/excelExternalWindow/9E12604C09CDD9EF862585930032B183.0001): Ring, Piston. Continental Aerospace Technologies Inc · PMA PQ1269CE-D · Replaces 19893 · Jan 6, 2020
- [AEF18762](https://drs.faa.gov/browse/excelExternalWindow/63559240CC4F909B862585930032B068.0001): Ring, Piston. Continental Aerospace Technologies Inc · PMA PQ1269CE-D · Replaces 18762 · Jan 6, 2020
- [AEF19370](https://drs.faa.gov/browse/excelExternalWindow/D6D9175CC6645B27862580EA005D86E0.0001): Piston, 4.500 Cylinder Bore. Continental Motors Inc · PMA PQ1269CE · Replaces 19370 · Jan 8, 2017
- [AEF18762](https://drs.faa.gov/browse/excelExternalWindow/1B2DA844DA5A6656862580EA005D86DD.0001): Ring, Piston. Continental Motors Inc · PMA PQ1269CE · Replaces 18762 · Jan 8, 2017
- [AEF19421](https://drs.faa.gov/browse/excelExternalWindow/190C5F64C8723F86862580EA005D86E1.0001): Piston Ring, Chrome Top Compression. Continental Motors Inc · PMA PQ1269CE · Replaces 19421 · Jan 8, 2017
- [AEF19893](https://drs.faa.gov/browse/excelExternalWindow/155E5F6D5A8A4D8D862580EA005D86E4.0001): Ring, Piston. Continental Motors Inc · PMA PQ1269CE · Replaces 19893 · Jan 8, 2017
- [F12ST2](https://drs.faa.gov/browse/excelExternalWindow/8220F19278600E6486257FE700783500.0001): Starter. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Delco 1109651 · May 18, 2016
- [F12ST2](https://drs.faa.gov/browse/excelExternalWindow/5DCED09D2033145386257FE7007836ED.0001): Starter. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Sky-Tec F12ST1 · May 18, 2016
- [10-821671-92( ) Without suffix letter (Black) or with suffix letter indicating optional jacket color](https://drs.faa.gov/browse/excelExternalWindow/AF63510ADAD7ECB886257ED50059887B.0001): Harness, S6-20/200, 5/8-24 Terminal. Continental Motors Inc · PMA PQ1269CE-D · Replaces 18362 19332 19403 19558 19611 19882 · Aug 13, 2015
- [F12ST2](https://drs.faa.gov/browse/excelExternalWindow/40A5678E63E86BE386257E5F0059BD62.0001): Starter. Sky-Tec Partners Ltd · PMA PQ0852SW · Replaces Delco 1109651 · Jun 7, 2015
- [AB-382681](https://drs.faa.gov/browse/excelExternalWindow/FEA56E9486CBCCC086257E7600731FA2.0001): Capacitor. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-382681 · May 14, 2015
- [AB-353060](https://drs.faa.gov/browse/excelExternalWindow/EC85CF76455432B186257E7600731AAB.0001): Bearing. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-353060 · May 14, 2015
- [AB-357164-1](https://drs.faa.gov/browse/excelExternalWindow/EA84A93045FDB37786257E760073197F.0001): Ignition Coil. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357164-1 · May 14, 2015
- [AB-357173](https://drs.faa.gov/browse/excelExternalWindow/E9D71E78CB1E2EC786257E7600731B24.0001): Ignition Contact Assembly. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357173 · May 14, 2015
- [AB-349511](https://drs.faa.gov/browse/excelExternalWindow/E6F4C878158178ED86257E7600731608.0001): Washer. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P?N 10-349511 · May 14, 2015
- [AB-400623](https://drs.faa.gov/browse/excelExternalWindow/C8D315BE44C154EA86257E76007313C8.0001): Ball Bearing. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-400567… · May 14, 2015
- [P/N ES 10-2-202](https://drs.faa.gov/browse/excelExternalWindow/C20E1C7828CFF7B686257E76007311F9.0001): Ball Bearing. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-2-202 · May 14, 2015
- [AB-357281](https://drs.faa.gov/browse/excelExternalWindow/B7AE62B850FE775886257E7600731FDA.0001): Capacitor. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357281 · May 14, 2015
- [AB-357426](https://drs.faa.gov/browse/excelExternalWindow/B109CC31AD80C5D786257E76007318D5.0001): Distributor Block. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357426 · May 14, 2015
- [AB-382584](https://drs.faa.gov/browse/excelExternalWindow/ADBBBAC64106E04B86257E7600731B9B.0001): Ignition Contact Assembly. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-382584 · May 14, 2015
- [AB-357165-1](https://drs.faa.gov/browse/excelExternalWindow/AC7B456DF612204986257E7600731944.0001): Ignition Coil. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357165-1 · May 14, 2015
- [AB-357592](https://drs.faa.gov/browse/excelExternalWindow/A985CB8E3B0A7B2F86257E7600731AE4.0001): Oil Seal. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357592 · May 14, 2015
- [AB-357174](https://drs.faa.gov/browse/excelExternalWindow/946C772AFFC268CA86257E76007319FE.0001): Ignition Contact Assembly. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-357174 · May 14, 2015
- [AB-382681-1](https://drs.faa.gov/browse/excelExternalWindow/89D148A3079B54D186257E7600731FBE.0001): Capacitor. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-382681-1 · May 14, 2015
- [AB-349326](https://drs.faa.gov/browse/excelExternalWindow/6F18E20254892E0B86257E7600731EB7.0001): Fish Paper. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces Continental Motors P/N 10-349326 · May 14, 2015

All of them: https://openairdocs.org/engine/franklin-6v-335-series/pma.md

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.