# Franklin 6A&6V335 series

- Type: Engine model (FAA registry)
- Registry code: 27020
- Manufacturer (registry): FRANKLIN
- Model: 6A&6V335 SER
- Engine type: Reciprocating
- Power: 210 hp
- Installed in: 71 registered aircraft
- Page: https://openairdocs.org/engine/franklin-6a-6v335-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 (71, first 50)

- [N102MD](https://openairdocs.org/aircraft/N102MD): [Farrington Kelly](https://openairdocs.org/faa-owner/FARRINGTON%20KELLY), [Sisters, OR](https://openairdocs.org/faa-place/OR/Sisters), S/N 2127C
- [N103JA](https://openairdocs.org/aircraft/N103JA): [Joann Air Inc](https://openairdocs.org/faa-owner/JOANN%20AIR%20INC), [Mulberry, FL](https://openairdocs.org/faa-place/FL/Mulberry), S/N 782
- [N108D](https://openairdocs.org/aircraft/N108D): [Shettel Jay E](https://openairdocs.org/faa-owner/SHETTEL%20JAY%20E), [Boiling Springs, PA](https://openairdocs.org/faa-place/PA/Boiling%20Springs), S/N MT-1
- [N1427Y](https://openairdocs.org/aircraft/N1427Y): [Spark 1 Aviation LLC](https://openairdocs.org/faa-owner/SPARK%201%20AVIATION%20LLC), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita), built 1961, S/N 17249127
- [N162DL](https://openairdocs.org/aircraft/N162DL): [Lewkowicz Augusto D](https://openairdocs.org/faa-owner/LEWKOWICZ%20AUGUSTO%20D), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), S/N 224
- [N17611](https://openairdocs.org/aircraft/N17611): [Tc Bouslog LLC](https://openairdocs.org/faa-owner/TC%20BOUSLOG%20LLC), [Noblesville, IN](https://openairdocs.org/faa-place/IN/Noblesville), built 1952, S/N 1041
- [N2050U](https://openairdocs.org/aircraft/N2050U): [Anderson Daniel A](https://openairdocs.org/faa-owner/ANDERSON%20DANIEL%20A), [Overly, ND](https://openairdocs.org/faa-place/ND/Overly), built 1970, S/N 2047C
- [N2051U](https://openairdocs.org/aircraft/N2051U): [Hood River Aviation LLC](https://openairdocs.org/faa-owner/HOOD%20RIVER%20AVIATION%20LLC), [Hood River, OR](https://openairdocs.org/faa-place/OR/Hood%20River), built 1970, S/N 2046C
- [N2054U](https://openairdocs.org/aircraft/N2054U): [Merrell Jared E](https://openairdocs.org/faa-owner/MERRELL%20JARED%20E), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 1970, S/N 2051C
- [N2056U](https://openairdocs.org/aircraft/N2056U): [Kw Group LLC](https://openairdocs.org/faa-owner/KW%20GROUP%20LLC), [Philipsburg, MT](https://openairdocs.org/faa-place/MT/Philipsburg), built 1970, S/N 2050C
- [N2064U](https://openairdocs.org/aircraft/N2064U): [Howard Nathan L](https://openairdocs.org/faa-owner/HOWARD%20NATHAN%20L), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), built 1970, S/N 3004C
- [N2065U](https://openairdocs.org/aircraft/N2065U): [Kohler Richard L](https://openairdocs.org/faa-owner/KOHLER%20RICHARD%20L), [Moriarty, NM](https://openairdocs.org/faa-place/NM/Moriarty), built 1970, S/N 2056C
- [N2066U](https://openairdocs.org/aircraft/N2066U): [Fletcher John G](https://openairdocs.org/faa-owner/FLETCHER%20JOHN%20G), [Diamondhead, MS](https://openairdocs.org/faa-place/MS/Diamondhead), built 1970, S/N 2057C
- [N2069U](https://openairdocs.org/aircraft/N2069U): [Baucom Thomas A](https://openairdocs.org/faa-owner/BAUCOM%20THOMAS%20A), [Midland, NC](https://openairdocs.org/faa-place/NC/Midland), built 1971, S/N 2059C
- [N222TE](https://openairdocs.org/aircraft/N222TE): [Franke Darren](https://openairdocs.org/faa-owner/FRANKE%20DARREN), [Yorktown, TX](https://openairdocs.org/faa-place/TX/Yorktown), built 1955, S/N 802
- [N2502U](https://openairdocs.org/aircraft/N2502U): [Christensen Alan B](https://openairdocs.org/faa-owner/CHRISTENSEN%20ALAN%20B), [Murphysboro, IL](https://openairdocs.org/faa-place/IL/Murphysboro), built 1963, S/N 17250102
- [N2690U](https://openairdocs.org/aircraft/N2690U): [Smith Daryn D](https://openairdocs.org/faa-owner/SMITH%20DARYN%20D), [Billings, MT](https://openairdocs.org/faa-place/MT/Billings), built 1963, S/N 17250290
- [N2814B](https://openairdocs.org/aircraft/N2814B): [C-Fleet LLC](https://openairdocs.org/faa-owner/C-FLEET%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1956, S/N 1528
- [N2832W](https://openairdocs.org/aircraft/N2832W): [Ibrahim Phillip](https://openairdocs.org/faa-owner/IBRAHIM%20PHILLIP), [Whitinsville, MA](https://openairdocs.org/faa-place/MA/Whitinsville), built 1969, S/N 4-189
- [N33616](https://openairdocs.org/aircraft/N33616): [Lakeland, FL](https://openairdocs.org/faa-place/FL/Lakeland), built 1955, S/N 720, Sale reported
- [N3566D](https://openairdocs.org/aircraft/N3566D): [Lucky Rose LLC](https://openairdocs.org/faa-owner/LUCKY%20ROSE%20LLC), [Brainerd, MN](https://openairdocs.org/faa-place/MN/Brainerd), built 1956, S/N 27109
- [N36015](https://openairdocs.org/aircraft/N36015): [Cotton Charles Randall](https://openairdocs.org/faa-owner/COTTON%20CHARLES%20RANDALL), [Lagrange, GA](https://openairdocs.org/faa-place/GA/Lagrange), S/N 768
- [N3701L](https://openairdocs.org/aircraft/N3701L): [Rice Solutions LLC](https://openairdocs.org/faa-owner/RICE%20SOLUTIONS%20LLC), [Plymouth, NH](https://openairdocs.org/faa-place/NH/Plymouth), S/N 17253870
- [N3ML](https://openairdocs.org/aircraft/N3ML): [Therp Todd J](https://openairdocs.org/faa-owner/THERP%20TODD%20J), [Rigby, ID](https://openairdocs.org/faa-place/ID/Rigby), built 1970, S/N 2048C
- [N40303](https://openairdocs.org/aircraft/N40303): [Dalziel Inc](https://openairdocs.org/faa-owner/DALZIEL%20INC), [White Salmon, WA](https://openairdocs.org/faa-place/WA/White%20Salmon), built 1971, S/N 3006C
- [N40677](https://openairdocs.org/aircraft/N40677): [Merrell Jared](https://openairdocs.org/faa-owner/MERRELL%20JARED), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), S/N 2181C
- [N4115A](https://openairdocs.org/aircraft/N4115A): [Dobalian Vaughn E](https://openairdocs.org/faa-owner/DOBALIAN%20VAUGHN%20E), [Jacksonville Beach, FL](https://openairdocs.org/faa-place/FL/Jacksonville%20Beach), built 1957, S/N 1084
- [N431PH](https://openairdocs.org/aircraft/N431PH): [Mcmullen Albert John](https://openairdocs.org/faa-owner/MCMULLEN%20ALBERT%20JOHN), [Corsicana, TX](https://openairdocs.org/faa-place/TX/Corsicana), built 1989, S/N 1
- [N4450C](https://openairdocs.org/aircraft/N4450C): [C & C Auto Sales LLC](https://openairdocs.org/faa-owner/C%20%26%20C%20AUTO%20SALES%20LLC), [Atlanta, MO](https://openairdocs.org/faa-place/MO/Atlanta), built 1960, S/N 56553
- [N4977E](https://openairdocs.org/aircraft/N4977E): [Wyllie Ashton R J Trustee](https://openairdocs.org/faa-owner/WYLLIE%20ASHTON%20R%20J%20TRUSTEE), [Thornton, NH](https://openairdocs.org/faa-place/NH/Thornton), built 1951, S/N 254
- [N50GA](https://openairdocs.org/aircraft/N50GA): [Cantrell James E Trustee](https://openairdocs.org/faa-owner/CANTRELL%20JAMES%20E%20TRUSTEE), [Madison, GA](https://openairdocs.org/faa-place/GA/Madison), built 1974, S/N 5003C
- [N51602](https://openairdocs.org/aircraft/N51602): [Krebs Martin C](https://openairdocs.org/faa-owner/KREBS%20MARTIN%20C), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami), built 1974, S/N 5013C
- [N51619](https://openairdocs.org/aircraft/N51619): [Isabella Ralph N](https://openairdocs.org/faa-owner/ISABELLA%20RALPH%20N), [Delanson, NY](https://openairdocs.org/faa-place/NY/Delanson), built 1974, S/N 5009C
- [N51626](https://openairdocs.org/aircraft/N51626): [Silvey Brandon](https://openairdocs.org/faa-owner/SILVEY%20BRANDON), [Cascade, ID](https://openairdocs.org/faa-place/ID/Cascade), built 1974, S/N 5015C
- [N51629](https://openairdocs.org/aircraft/N51629): [Phillips Aaron W](https://openairdocs.org/faa-owner/PHILLIPS%20AARON%20W), [Fort Scott, KS](https://openairdocs.org/faa-place/KS/Fort%20Scott), S/N 5017C
- [N51638](https://openairdocs.org/aircraft/N51638): [Janczak Gillian](https://openairdocs.org/faa-owner/JANCZAK%20GILLIAN), [Golden Valley, AZ](https://openairdocs.org/faa-place/AZ/Golden%20Valley), S/N 5027C
- [N5330V](https://openairdocs.org/aircraft/N5330V): [Miami Helicopter Services Corp](https://openairdocs.org/faa-owner/MIAMI%20HELICOPTER%20SERVICES%20CORP), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami), built 1959, S/N 1042
- [N53BF](https://openairdocs.org/aircraft/N53BF): [Perkins Adam J](https://openairdocs.org/faa-owner/PERKINS%20ADAM%20J), [Chillicothe, IL](https://openairdocs.org/faa-place/IL/Chillicothe), S/N 12009
- [N55LE](https://openairdocs.org/aircraft/N55LE): [Timmreck Joseph P](https://openairdocs.org/faa-owner/TIMMRECK%20JOSEPH%20P), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1974, S/N 5004C
- [N56BF](https://openairdocs.org/aircraft/N56BF): [Flight Tech Inc](https://openairdocs.org/faa-owner/FLIGHT%20TECH%20INC), [Arlington, WA](https://openairdocs.org/faa-place/WA/Arlington), S/N 12011
- [N57CD](https://openairdocs.org/aircraft/N57CD): [Carey James Dean](https://openairdocs.org/faa-owner/CAREY%20JAMES%20DEAN), [Winterset, IA](https://openairdocs.org/faa-place/IA/Winterset), built 1957, S/N 878
- [N62017](https://openairdocs.org/aircraft/N62017): [Bond Kelly J](https://openairdocs.org/faa-owner/BOND%20KELLY%20J), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), S/N 5045C
- [N62020](https://openairdocs.org/aircraft/N62020): [Chardon Stephen A](https://openairdocs.org/faa-owner/CHARDON%20STEPHEN%20A), [Franconia, NH](https://openairdocs.org/faa-place/NH/Franconia), built 1974, S/N 5047C
- [N6214](https://openairdocs.org/aircraft/N6214): [Domingue David K](https://openairdocs.org/faa-owner/DOMINGUE%20DAVID%20K), [Port Neches, TX](https://openairdocs.org/faa-place/TX/Port%20Neches), built 1952, S/N 1023
- [N62329](https://openairdocs.org/aircraft/N62329): [Puch Len D](https://openairdocs.org/faa-owner/PUCH%20LEN%20D), [New Boston, MI](https://openairdocs.org/faa-place/MI/New%20Boston), S/N 558
- [N630C](https://openairdocs.org/aircraft/N630C): [Filkill David B](https://openairdocs.org/faa-owner/FILKILL%20DAVID%20B), [Willow, AK](https://openairdocs.org/faa-place/AK/Willow), built 1947, S/N 108-3630
- [N6356](https://openairdocs.org/aircraft/N6356): [Eagal Lloyd S](https://openairdocs.org/faa-owner/EAGAL%20LLOYD%20S), [Renfrew, PA](https://openairdocs.org/faa-place/PA/Renfrew), built 1956, S/N 1671
- [N64764](https://openairdocs.org/aircraft/N64764): [Riverbank, CA](https://openairdocs.org/faa-place/CA/Riverbank), built 1952, S/N 489, Registration pending
- [N6520N](https://openairdocs.org/aircraft/N6520N): [Demeyer Scott M](https://openairdocs.org/faa-owner/DEMEYER%20SCOTT%20M), [Olympia, WA](https://openairdocs.org/faa-place/WA/Olympia), built 1949, S/N 1641
- [N66BF](https://openairdocs.org/aircraft/N66BF): [Robbins Tracy F](https://openairdocs.org/faa-owner/ROBBINS%20TRACY%20F), [Tacoma, WA](https://openairdocs.org/faa-place/WA/Tacoma), built 1972, S/N 12026

All 71: https://openairdocs.org/engine/franklin-6a-6v335-series/aircraft.md

## NTSB investigations (60, newest 50)

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 WPR25LA196](https://openairdocs.org/ntsb/WPR25LA196), Jun 24, 2025: Maule M-4-220C (N2051U), Pendleton, OR, substantial damage. Probable cause: The pilot’s failure to maintain directional control during landing, in gusting crosswind conditions.
- [NTSB GAA18CA119](https://openairdocs.org/ntsb/GAA18CA119), Feb 5, 2018: Cessna 172 (N271BJ), Juneau, AK, substantial damage. Probable cause: The pilot’s selection of unsuitable terrain for landing, which resulted in a nose-over.
- [NTSB GAA15CA067](https://openairdocs.org/ntsb/GAA15CA067), May 11, 2015: Maule M 4-220C (N2058U), Rigby, ID, substantial damage. Probable cause: The pilot's failure to maintain directional control of the airplane during landing roll.
- [NTSB WPR14FA252](https://openairdocs.org/ntsb/WPR14FA252), Jun 18, 2014: Cessna 175 (N7043M), Moab, UT, destroyed, 1 fatal. Probable cause: The pilot’s decision to approach rising mountainous terrain at too low an altitude to clear it and his subsequent attempt to climb, which exceeded the airplane’s critical angle-of-attack and resulted…
- [NTSB WPR13LA050](https://openairdocs.org/ntsb/WPR13LA050), Nov 23, 2012: Sater Coot A-Amphib (N8VS), San Andreas, CA, substantial damage, 1 fatal. Probable cause: The pilot's excessive flight control inputs, which led to flight that exceeded the structural limits of the airplane and resulted in structural failure of both wings.
- [NTSB CEN10CA195](https://openairdocs.org/ntsb/CEN10CA195), Apr 6, 2010: Cessna 175 (N9266B), Eveleth, MN, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for landing.
- [NTSB MIA07LA089](https://openairdocs.org/ntsb/MIA07LA089), Apr 27, 2007: Hiller UH-12C (N92993), Plant City, FL, substantial damage. Probable cause: The loss of engine power due to a magneto impulse coupling failure for undetermined reasons.
- [NTSB ANC07LA026](https://openairdocs.org/ntsb/ANC07LA026), Mar 31, 2007: Cessna 175 (N8092T), Bunnell, FL, substantial damage. Probable cause: The loss of engine power during cruise due to the separation of an engine piston, which resulted in a forced landing in a swamp and a collision with trees.
- [NTSB ATL06LA130](https://openairdocs.org/ntsb/ATL06LA130), Sep 25, 2006: Bellanca 14-13-2 (N74475), Ellijay, GA, substantial damage. Probable cause: A loss of engine power due to fuel contamination. Also causal was the mechanic's failure to ensure the aircraft's fuel system was free of contamination while performing an annual inspection.
- [NTSB LAX03CA274](https://openairdocs.org/ntsb/LAX03CA274), Sep 2, 2003: Bell 47D1 (N64580), Chino, CA, substantial damage. Probable cause: the student pilot's inappropriate remedial action through the application of excessive aft cyclic during a run-on landing. A factor in the accident was the student's disregard for company procedures.
- [NTSB DEN03FA113](https://openairdocs.org/ntsb/DEN03FA113), Jun 28, 2003: Mattison Starduster Too (N80T), Ellicott, CO, destroyed, 1 fatal. Probable cause: the pilot's improper in-flight planning/decision to perform aerobatics at low altitude and the failed welds at the elevator horn and torque tube. Factors contributing to the accident were the pilot…
- [NTSB LAX01FA236](https://openairdocs.org/ntsb/LAX01FA236), Jul 6, 2001: Bell 47D-1 (N64580), Riverside, CA, substantial damage. Probable cause: The engine crankshaft's failure as the result of fatigue cracking initiated by surface damage and localized overheating due to the installation at overhaul of incorrectly sized bearings.
- [NTSB FTW00LA096](https://openairdocs.org/ntsb/FTW00LA096), Mar 14, 2000: Siai-Marchetti S.205/22R (N2832W), Rayville, LA, substantial damage. Probable cause: The loss of engine power for an undetermined reason, which resulted in a forced landing. A factor was the dark night light condition.
- [NTSB ANC99LA082](https://openairdocs.org/ntsb/ANC99LA082), Jun 24, 1999: Maule M-4-220C (N40677), Mcgrath, AK, substantial damage. Probable cause: A separation of the number 4 engine cylinder, and a fracture of the number 4 engine connecting rod.
- [NTSB SEA98FA090](https://openairdocs.org/ntsb/SEA98FA090), Jun 6, 1998: Maule M-5-220C (N16CB), Kettle Falls, WA, destroyed, 2 fatal. Probable cause: The pilot's failure to maintain terrain clearance. A factor was an attempt to perform aerobatics at low altitude.
- [NTSB MIA97LA038](https://openairdocs.org/ntsb/MIA97LA038), Dec 15, 1996: Bell 47G (N1200Z), Lantana, FL, destroyed. Probable cause: an undetermined throttle problem, which resulted in a stuck (binding) throttle; and inadequate remedial action by the pilot, which led to a hard landing and subsequent nose over.
- [NTSB MIA96LA197](https://openairdocs.org/ntsb/MIA96LA197), Jul 30, 1996: Bell 47D1G (N1200Z), West Boca Raton, FL, substantial damage. Probable cause: Failure of the pilot to apply carburetor heat following a loss of engine power due to inadequate altitude over a populated area. Contributing to the accident was the encounter with conditions…
- [NTSB ATL96LA106](https://openairdocs.org/ntsb/ATL96LA106), Jul 9, 1996: Bell 47G (N6356), Bartow, FL, destroyed. Probable cause: the pilot's inadequate visual lookout, and his failure to maintain ground clearance, while maneuvering to avoid a collision with a utility line.
- [NTSB SEA95LA063](https://openairdocs.org/ntsb/SEA95LA063), Mar 7, 1995: Hiller UH-12C (N222TE), Bonners Ferry, ID, substantial damage. Probable cause: ROTOR RPM WAS NOT MAINTAINED. FACTORS TO THE ACCIDENT WERE: INADEQUATE IN FLIGHT PLANNING/DECISION AND SUITABLE TERRAIN WAS NOT AVAILABLE.
- [NTSB FTW94LA002](https://openairdocs.org/ntsb/FTW94LA002), Oct 3, 1993: Maule M-5-200C (N16CB), Watkins, CO, substantial damage. Probable cause: THE PILOT'S LOSS OF DIRECTIONAL CONTROL RESULTING IN THE INADVERTENT GROUND LOOP. A FACTOR WAS THE INSTRUCTOR'S FAILURE TO TAKE REMEDIAL ACTION ON A TIMELY MANNER.
- [NTSB DEN93LA028](https://openairdocs.org/ntsb/DEN93LA028), Feb 28, 1993: Maule M-5-220C (N16CB), Englewood, CO, substantial damage. Probable cause: FAILURE BY THE PILOT TO MAINTAIN CONTROL OF THE AIRCRAFT. A FACTOR WAS: LACK OF EXPERIENCE IN TYPE OF AIRCRAFT.
- [NTSB ATL90DKJ07](https://openairdocs.org/ntsb/ATL90DKJ07), Jul 27, 1990: Bell-Continental Copters 47G (N7153), Clayhatchee, AL, substantial damage. Probable cause: FAILURE OF THE ENGINE MAGNETO(S). THE LACK OF SUITABLE TERRAIN (TREES) IN THE EMERGENCY LANDING AREA WAS A RELATED FACTOR.
- [NTSB LAX86LA277](https://openairdocs.org/ntsb/LAX86LA277), Jul 2, 1986: Hiller UH-12C (N26186), Garberville, CA, substantial damage
- [NTSB LAX84LA181](https://openairdocs.org/ntsb/LAX84LA181), Feb 17, 1984: Bellanca 14-13-2 (N74490), Rialto, CA, substantial damage
- [NTSB SEA82FA111](https://openairdocs.org/ntsb/SEA82FA111), Jul 15, 1982: Cessna 172F (N8230U), Oxbow, OR, destroyed, 4 fatal
- [NTSB LAX81FVW17](https://openairdocs.org/ntsb/LAX81FVW17), Aug 22, 1981: Hiller Acft UH-12B (N94525), Las Vegas, NV, substantial damage
- [NTSB ATL81FKW02](https://openairdocs.org/ntsb/ATL81FKW02), Oct 8, 1980: Bell 47G (N64877), Clarksville, TN, substantial damage
- [NTSB SEA80DYE47](https://openairdocs.org/ntsb/SEA80DYE47), Jul 26, 1980: Coot B (N7141), Kelso, WA, destroyed, 2 fatal
- [NTSB MIA79DKJ57](https://openairdocs.org/ntsb/MIA79DKJ57), Jul 29, 1979: Bell 47-D1 (N36015), Enterprise, AL, substantial damage
- [NTSB CHI79FEM21](https://openairdocs.org/ntsb/CHI79FEM21), May 19, 1979: Bell 47D-1 (N64580), Middleville, MI, substantial damage
- [NTSB LAX79DUJ30](https://openairdocs.org/ntsb/LAX79DUJ30), Jan 1, 1979: Maule M4220C (N3ML), Pearce, AZ, substantial damage
- [NTSB SEA78DYM44](https://openairdocs.org/ntsb/SEA78DYM44), Jul 8, 1978: Maule M5220C (N62014), Enterprise, OR, substantial damage
- [NTSB CHI77FEM34](https://openairdocs.org/ntsb/CHI77FEM34), Jul 21, 1977: Bell 47D (N64580), Byron Center, MI, substantial damage
- [NTSB FTW77DPG50](https://openairdocs.org/ntsb/FTW77DPG50), Jun 24, 1977: Bell 47G (N64877), Weiwer, AR, substantial damage
- [NTSB SEA77FYE24](https://openairdocs.org/ntsb/SEA77FYE24), Jun 17, 1977: Hiller Acft 12C (N5330V), Mt Vernon, WA, destroyed
- [NTSB DEN77FQA31](https://openairdocs.org/ntsb/DEN77FQA31), Apr 28, 1977: Maule M-4 (N2063U), Santa Fe, NM, substantial damage
- [NTSB MKC77DCQ13](https://openairdocs.org/ntsb/MKC77DCQ13), Jan 3, 1977: Maule M-4 (N40303), Coldwater, KS, substantial damage
- [NTSB OAK77DXQ02](https://openairdocs.org/ntsb/OAK77DXQ02), Nov 24, 1976: Maule M5 (N51602), Battle Mountn, NV, substantial damage
- [NTSB FTW76DPG72](https://openairdocs.org/ntsb/FTW76DPG72), Jul 1, 1976: Bell 47G-2 (N64877), Beedeville, AR, substantial damage
- [NTSB ANC76FAA26](https://openairdocs.org/ntsb/ANC76FAA26), Mar 7, 1976: Cessna 170B (N8047A), Fairbanks, AK, substantial damage
- [NTSB ANC76DAA15](https://openairdocs.org/ntsb/ANC76DAA15), Sep 10, 1975: Cessna 170B (N8047A), Fairbanks, AK, no damage
- [NTSB DEN75DTC03](https://openairdocs.org/ntsb/DEN75DTC03), Jul 4, 1974: Maule M-4 (N2054U), Gillette, WY, substantial damage
- [NTSB LAX74AL057](https://openairdocs.org/ntsb/LAX74AL057), Jan 28, 1974: Bell 47D1 (N74084), Westminster, CA, destroyed, 2 fatal
- [NTSB NYC74FFJ18](https://openairdocs.org/ntsb/NYC74FFJ18), Nov 6, 1973: Hiller Acft UH-12B (N33616), Dansville, NY, substantial damage
- [NTSB OAK74FVD14](https://openairdocs.org/ntsb/OAK74FVD14), Sep 14, 1973: Hiller Acft UH-12C (N5330V), Brentwood, CA, substantial damage
- [NTSB OAK73DVG61](https://openairdocs.org/ntsb/OAK73DVG61), May 7, 1973: Stinson 108-2 (N9529K), Weed, CA, substantial damage
- [NTSB CHI72DEE25](https://openairdocs.org/ntsb/CHI72DEE25), Aug 30, 1971: Siai-Marche S205 (N2832W), Northbrook, IL, substantial damage
- [NTSB CHI71FBJ69](https://openairdocs.org/ntsb/CHI71FBJ69), Mar 30, 1971: Maule M-4220 (N2063U), Midland, MI, substantial damage
- [NTSB MIA71FLD55](https://openairdocs.org/ntsb/MIA71FLD55), Mar 27, 1971: Cessna 172 (N8313B), Lakeland, FL, substantial damage
- [NTSB OAK71DVM12](https://openairdocs.org/ntsb/OAK71DVM12), Aug 28, 1970: Hiller Acft UH-12C (N5330V), Castroville, CA, substantial damage

All 60: https://openairdocs.org/engine/franklin-6a-6v335-series/ntsb.md

## FAA accident and incident reports (71, newest 50)

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 20250624008899A](https://openairdocs.org/incident/20250624008899A), Jun 24, 2025: Maule M-4-220C (N2051U), Pendleton, OR, Substantial damage. ASOS reporting winds were at 170 at 8 gusting to 18. As stated by the pilot on downwind the tower cleared me to land on runway 26 and reported winds at 200 at…
- [Incident 20180507004869I](https://openairdocs.org/incident/20180507004869I), May 7, 2018: Maule M-4-220C (N102MD), Fields, OR, Minor damage. Pilot was landing on state of Oregon hwy 205 south of Fields Oregon to stop and eat lunch at the gas station/cafe. As described by the pilot, on landing the…
- [Accident 20180205003549A](https://openairdocs.org/incident/20180205003549A), Feb 5, 2018: Cessna 172 (N271BJ), Juneau, AK, Substantial damage. Airman overflew landing site, which was covered with windblown snow. A snowmobile track nearby showed visible rocks in the track, with which airman presumed…
- [Incident 20150706015039I](https://openairdocs.org/incident/20150706015039I), Jul 6, 2015: Maule M-5-220C (N62017), North Pole, AK, Minor damage. Airman had been flying that afternoon looking for a picnic spot to take his family. Airman stated that after locating an appropriate location, he assessed his…
- [Accident 20150511006839A](https://openairdocs.org/incident/20150511006839A), May 11, 2015: Maule M-4-220C (N2058U), Rigby, ID, Substantial damage. Gear collapse, landing drifted off runway, turned. Pilot stated concerning the ground loop event that occurrred on 5/11/2015, in Maule, N2058U, notice upon…
- [Accident 20140618008319A](https://openairdocs.org/incident/20140618008319A), Jun 18, 2014: Cessna 175 (N7043M), Moab, UT, Destroyed, 1 fatal. Winds at canyonlands airport (cny) approximately 30 NM to the northwest of the accident at an elevation of 4,557 feet MSL reported winds at 270 at 9 KTS…
- [Accident 20121123026819A](https://openairdocs.org/incident/20121123026819A), Nov 23, 2012: Sater Vernon D COOT A-AMPHIB (N8VS), San Andreas, CA, Destroyed, 1 fatal. Witness reported the aircraft turned rt base for rwy 31, nosed down and the wings appeared to seperate prior to impact.
- [Accident 20100406030989A](https://openairdocs.org/incident/20100406030989A), Apr 6, 2010: Cessna 175 (N9266B), Eveleth, MN, Substantial damage. On 04/06/2010 aircraft N9266B landed at ely lake aviation grass runway. Aircraft encountered a soft spot which caused the aircraft to stop suddenly and ground…
- [Accident 20070427012289A](https://openairdocs.org/incident/20070427012289A), Apr 27, 2007: Hiller UH12C (N92993), Plant City, FL, Substantial damage. (-23) On April 27, 2007, about 1330 eastern time, a Hiller UH-12C helicopter, operating on a part 91 instruction flight made a forced landing in a field…
- [Accident 20070331005509A](https://openairdocs.org/incident/20070331005509A), Mar 31, 2007: Cessna 175B (N8092T), Hastings, FL, Substantial damage. (-23) On March 31, 2007, at 2:10 local time, a Cessna 175B, N8092T, registered to the pilot [privacy data omitted], made an emergency landing in a swampy area…
- [Accident 20060925023789A](https://openairdocs.org/incident/20060925023789A), Sep 25, 2006: Blanca 14132 (N74475), Ellijay, GA, Destroyed. (-23) On 9/25/2006, at approximately 1830, aircraft registration N74475, piloted by [privacy data omitted] experienced engine problems and attempted to make an…
- [Incident 20050904025629I](https://openairdocs.org/incident/20050904025629I), Sep 4, 2005: Cessna 175A (N859Z), Weedsport, NY, Minor damage. (-23) On September 4, 2005, at 1100 EDT, a Cessna aircraft CE-175-A, s/n 56306, N859Z, operated by pilot [privacy data omitted] taxied the aircraft into a…
- [Incident 20050815022009I](https://openairdocs.org/incident/20050815022009I), Aug 15, 2005: Maule M4220C (N102MD), Elwood, IN, Substantial damage. (-23) On August 15, 2005, pilot in command [privacy data omitted] was operating N102MD, a Maule M-4 aircraft, on a personal pleasure flight from day airport…
- [Incident 20040603011739I](https://openairdocs.org/incident/20040603011739I), Jun 3, 2004: Bell 47G (N4115A), Hawthorne, CA. (-23) Air traffic was notified vaughn eric dobalian, the pilot of Bell 47G, serial number 1084, N4115A, that he was declaring an emergency due to difficulty…
- [Incident 20040527022729I](https://openairdocs.org/incident/20040527022729I), May 27, 2004: Bell 47G (N6356), Harrisburg, PA, Minor damage. (-23) During landing to runway 26, aircraft was descending too fast when wind shifted to the tail. Pilot stated that he contacted the runway hard. Pilot…
- [Accident 20030901036529A](https://openairdocs.org/incident/20030901036529A), Sep 1, 2003: Bell 47D1 (N64580), Chino, CA, Destroyed. (-23) While practicing a running landings in a BH-47 a student pilot failed to touch down in a level attitude. The aircraft initially contacted the surface…
- [Accident 20030628015289A](https://openairdocs.org/incident/20030628015289A), Jun 28, 2003: Amtr STARDUSTER2 (N80T), Ellicott, CO, Destroyed, 1 fatal. (-23) The aircraft departed Colorado Springs east airport (A50), Ellicott Colorado and was in the process of performing a low level flight over the Ellicott…
- [Incident 20030103010149I](https://openairdocs.org/incident/20030103010149I), Jan 3, 2003: Cessna 175 (N9266B), St Croix River. (-23) On 1/3/03, steven lere was PIC of a Cessna 175. He depleted his fuel supply before reaching his destination while enroute from amery, WI. This forced him…
- [Incident 20020622014459I](https://openairdocs.org/incident/20020622014459I), Jun 22, 2002: Bell 47D1 (N64580), Chino, CA, Minor damage. (-23) On Saturday 22nd June at around 14:30, the pilot reported that he lifted the helicopter into a hover and moved over the grass area in front of a hangar…
- [Accident 20010705016439A](https://openairdocs.org/incident/20010705016439A), Jul 5, 2001: Bell 47D1 (N64580), Riverside, CA, No damage. (.19) On July 5, 2001, at 1701 hours pacific daylight time, a Bell 47D-1, N64580, experienced a rough running engine on short final approach and entered an…
- [Accident 20000313007779A](https://openairdocs.org/incident/20000313007779A), Mar 13, 2000: Mrchti S20522R (N2832W), Rayville, LA, No damage. (-23) Aircraft engine lost power, pilot made a forced landing short of runway.
- [Accident 19990624007559A](https://openairdocs.org/incident/19990624007559A), Jun 24, 1999: Maule M4220C (N40677), Mcgrath, AK, Substantial damage. Acft crashed while en route and sustained substantial damage, other circumstances are unknown. (From .19) on June 24, 1999, about 1220 Alaska daylight time, a…
- [Incident 19980711029129I](https://openairdocs.org/incident/19980711029129I), Jul 11, 1998: Blanca 14133 (N6520N), Arlington, WA, Minor damage. Prior departing runway 16 at the awo airport, the pilot neglected to switch from the auxiliary fuel tank to a wing tank containing sufficient fuel. While on…
- [Accident 19980606012409A](https://openairdocs.org/incident/19980606012409A), Jun 6, 1998: Maule M5220C (N16CB), Kettle Falls, WA, Destroyed, 2 fatal. Acft crashed under unknown circumstances, 2 POB suffered fatal inj acft has unknown damage, Kettle Falls, WA. (-23) after photo flight buzzed ground crew,…
- [Incident 19970705016759I](https://openairdocs.org/incident/19970705016759I), Jul 5, 1997: Hiller UH12B (N94525), Tres Pinos, CA, Minor damage. Walking away rotors winding down. Another chopper landing. Rotor was caused rotors to cone and strike tailboom.
- [Accident 19961215039369A](https://openairdocs.org/incident/19961215039369A), Dec 15, 1996: Bell 47G (N1200Z), West Palm Beach, FL, Destroyed. Stuck throttle. Engine overspeed in pattern. Autorotated. Turned into wind failed decelerated. Bounced. Nosed over.
- [Accident 19960730037069A](https://openairdocs.org/incident/19960730037069A), Jul 30, 1996: Bell 47D1 (N1200Z), West Boca Raton, FL, Substantial damage. Lost power circling on photo flight at 200FT. Autorotated. Rotors hit trees landing.
- [Accident 19960709016219A](https://openairdocs.org/incident/19960709016219A), Jul 9, 1996: Bell 47G (N6356), Bartow, FL, Destroyed. Aerial observation flight tailrotor hit ground during quick stop manuever avoiding powerline.
- [Accident 19950307003299A](https://openairdocs.org/incident/19950307003299A), Mar 7, 1995: Hiller UH12C (N222TE), Bonners Ferry, ID, Substantial damage. Practicing pinnicle approach hover. Transition to forward flight lost RPM. Lost tail control. Landed hard. Rolled.
- [Accident 19931003037339A](https://openairdocs.org/incident/19931003037339A), Oct 3, 1993: Maule M5220C (N16CB), Denver, CO, Substantial damage. Swerved on landing. Student saya CFI failed correct. CFI says tried to correct but student froze on control.
- [Incident 19930301007279I](https://openairdocs.org/incident/19930301007279I), Mar 1, 1993: Hiller UH12C (N222TE), Spokane, WA, Minor damage. Aircraft began to vibrate at hover. Lost control authority. Landed. Left lower engine snubber assembly failed.
- [Accident 19930228003839A](https://openairdocs.org/incident/19930228003839A), Feb 28, 1993: Maule M5220C (N16CB), Denver, CO, Substantial damage. Drifted left on flare. Elected go around. Drifted right. Struck wind indicator. Caused flutter due wing damage.
- [Incident 19920121004619I](https://openairdocs.org/incident/19920121004619I), Jan 21, 1992: Hiller UH12B (N94525), Dallas, TX, Minor damage. Pilot practicing autorotations. Aircraft seemed to sink more than previously. Tail rotor hit ground.
- [Incident 19910519020719I](https://openairdocs.org/incident/19910519020719I), May 19, 1991: Cessna 172C (N1427Y), Pine Center, MN, Minor damage. Aircraft struck a powerline during approach to landing in a pasture. Landed safely.
- [Incident 19901208062109I](https://openairdocs.org/incident/19901208062109I), Dec 8, 1990: Bell 47G (N4115A), Maryville, TN, Minor damage. Fell 4 feet AGL while hovering. Engine sprag support brace failed causing loss of lateral control.
- [Accident 19900728029189A](https://openairdocs.org/incident/19900728029189A), Jul 28, 1990: Bell 47G (N7153), Clayhatchee, AL, Substantial damage. Engine quit on pull-up from a spray run. Crash landed. A magneto coil failed, report indicates no ag certification
- [Incident 19890409024269I](https://openairdocs.org/incident/19890409024269I), Apr 9, 1989: Maule M4220C (N2065U), Seattle, WA, Minor damage. Lost control on rollout in gusty conditions. Used too much brake. Aircraft ground looped and nosed down.
- [Incident 19880131021669I](https://openairdocs.org/incident/19880131021669I), Jan 31, 1988: Blanca 14133 (N6518N), Grands Pass, OR, Minor damage. Ran off the runway during a high speed taxi test when the right main gear collapsed.
- [Incident 19870416029399I](https://openairdocs.org/incident/19870416029399I), Apr 16, 1987: Hiller UH12C (N26186), Ukiah, CA. Loss of oil pressure before forced landing. Found oil line was off the fitting to the oil pump.
- [Accident 19860702029759A](https://openairdocs.org/incident/19860702029759A), Jul 2, 1986: Hiller UH12C (N26186), Garberville, CA, Substantial damage. The helicopter landed when rotor RPM decayed. Main rotor centrifugal clutch was oil soaked due to a leaking seal.
- [Incident 19850509027269I](https://openairdocs.org/incident/19850509027269I), May 9, 1985: Maule M4220C (N2050U), Ontonagon, MI, Minor damage. Aircraft tipped up on wing and tail wheel struck runway edge light, on rollout. Off side of runway into mud.
- [Accident 19840217004159A](https://openairdocs.org/incident/19840217004159A), Feb 17, 1984: Blanca 14132 (N74490), Rialto, CA, Substantial damage. Engine stopped on climbout due to fuel starvation. Crash landed gear up. Fuel selector on empty tank other was full
- [Accident 19820714028939A](https://openairdocs.org/incident/19820714028939A), Jul 14, 1982: Cessna 172 (N8230U), Oxbow, OR, Destroyed, 3 fatal. Stalled during slow,low altitude turn over river landing area. Aircraft burned on impact. Was over gross weight.
- [Incident 19810927071859I](https://openairdocs.org/incident/19810927071859I), Sep 27, 1981: Maule M5220C (N16CB), Columbia, MD, Minor damage. Engine failed on climb at 500 ft, landed on next farm. Engine had a broken connecting rod wrist pin.
- [Accident 19810822050919A](https://openairdocs.org/incident/19810822050919A), Aug 22, 1981: Hiller UH12B (N94525), Las Vegas, NV, Substantial damage. Pilot misjudged landing. Made hard landing and tail boom failed.
- [Incident 19810715055589I](https://openairdocs.org/incident/19810715055589I), Jul 15, 1981: Univar 1082 (N9529K), Akron, CO. Za lost power after takeoff. Landed off airport. Found evidence of moisture in magneto. Aircraft recently washed.
- [Incident 19810228017139I](https://openairdocs.org/incident/19810228017139I), Feb 28, 1981: Mrchti S20522R (N937W), Warrensburg, MO, Substantial damage. Pilot forgot to lower gear prior to landing.
- [Accident 19801008049739A](https://openairdocs.org/incident/19801008049739A), Oct 8, 1980: Bell 47G (N64877), Clarksville, TN, Destroyed. Allowed rotor speed to decay on autorotation landing. Hit hard, copter nosed over. CFI late on recovery try.
- [Accident 19800726033189A](https://openairdocs.org/incident/19800726033189A), Jul 26, 1980: Amtr B (N7141), Kelso, WA, Destroyed, 1 fatal. Evidence shows amphibians wing was damaged by some object in the air or in takeoff. Wing then failed in flight.
- [Accident 19790729020869A](https://openairdocs.org/incident/19790729020869A), Jul 29, 1979: Bell 47D1 (N36015), Enterprise, AL, Substantial damage. Flew into own rotorwash after 180 degree turn during spray operation. Skid hit. Rolled over.

All 71: https://openairdocs.org/engine/franklin-6a-6v335-series/incidents.md

---
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.