# Franklin 2A4 series - Type: Engine model (FAA registry) - Registry code: 27001 - Manufacturer (registry): FRANKLIN - Model: 2A4 SERIES - Engine type: Reciprocating - Power: 49 hp - Data sheet: [TCDS TC 240](https://openairdocs.org/tcds/TC%20240) (OpenAirDocs) - Holder: Franklin Engine Company - Installed in: 35 registered aircraft - Page: https://openairdocs.org/engine/franklin-2a4-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. - [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more ## Registered aircraft (35) - [N10983](https://openairdocs.org/aircraft/N10983): [Blakesley Eric R](https://openairdocs.org/faa-owner/BLAKESLEY%20ERIC%20R), [Canandaigua, NY](https://openairdocs.org/faa-place/NY/Canandaigua), built 1971, S/N 42-72 - [N10985](https://openairdocs.org/aircraft/N10985): [Lozier Kurt T](https://openairdocs.org/faa-owner/LOZIER%20KURT%20T), [Albany, NY](https://openairdocs.org/faa-place/NY/Albany), S/N 45-72 - [N12205](https://openairdocs.org/aircraft/N12205): [Wilson Seth J](https://openairdocs.org/faa-owner/WILSON%20SETH%20J), [Glennallen, AK](https://openairdocs.org/faa-place/AK/Glennallen), built 1972, S/N 48-72 - [N1919W](https://openairdocs.org/aircraft/N1919W): [Wiley Dennis C DBA](https://openairdocs.org/faa-owner/WILEY%20DENNIS%20C%20DBA), [Emmett, ID](https://openairdocs.org/faa-place/ID/Emmett), built 1999, S/N 002 - [N31270](https://openairdocs.org/aircraft/N31270): [Kunkle James K](https://openairdocs.org/faa-owner/KUNKLE%20JAMES%20K), [Santa Ynez, CA](https://openairdocs.org/faa-place/CA/Santa%20Ynez), built 1972, S/N 68-72 - [N31290](https://openairdocs.org/aircraft/N31290): [Huntting Preston I](https://openairdocs.org/faa-owner/HUNTTING%20PRESTON%20I), [Camp Verde, AZ](https://openairdocs.org/faa-place/AZ/Camp%20Verde), built 1972, S/N 69-72 - [N4995](https://openairdocs.org/aircraft/N4995): [Stein David E](https://openairdocs.org/faa-owner/STEIN%20DAVID%20E), [Modesto, CA](https://openairdocs.org/faa-place/CA/Modesto), built 1971, S/N 10-71 - [N62965](https://openairdocs.org/aircraft/N62965): [Mckenna David M](https://openairdocs.org/faa-owner/MCKENNA%20DAVID%20M), [Newell, IA](https://openairdocs.org/faa-place/IA/Newell), S/N 53-72 - [N68516](https://openairdocs.org/aircraft/N68516): [Brothers Aviation LLC](https://openairdocs.org/faa-owner/BROTHERS%20AVIATION%20LLC), [Black Rock, AR](https://openairdocs.org/faa-place/AR/Black%20Rock), built 1972, S/N 54-72 - [N68529](https://openairdocs.org/aircraft/N68529): [Jcads Inc](https://openairdocs.org/faa-owner/JCADS%20INC), [Tampa, FL](https://openairdocs.org/faa-place/FL/Tampa), built 1972, S/N 59-72 - [N68538](https://openairdocs.org/aircraft/N68538): [Maneely Roy H](https://openairdocs.org/faa-owner/MANEELY%20ROY%20H), [Wadsworth, OH](https://openairdocs.org/faa-place/OH/Wadsworth), built 1972, S/N 60-72 - [N7742](https://openairdocs.org/aircraft/N7742): [Brewer Michael A](https://openairdocs.org/faa-owner/BREWER%20MICHAEL%20A), [Fort Wayne, IN](https://openairdocs.org/faa-place/IN/Fort%20Wayne), built 1971, S/N TM-1 - [N7EZ](https://openairdocs.org/aircraft/N7EZ): [Eaa Aviation Foundation Inc](https://openairdocs.org/faa-owner/EAA%20AVIATION%20FOUNDATION%20INC), [Oshkosh, WI](https://openairdocs.org/faa-place/WI/Oshkosh), built 1975, S/N 001 - [N8861](https://openairdocs.org/aircraft/N8861): [Farabaugh Nano F](https://openairdocs.org/faa-owner/FARABAUGH%20NANO%20F), [Elkhart, IN](https://openairdocs.org/faa-place/IN/Elkhart), built 1973, S/N 71-73 - [N88EV](https://openairdocs.org/aircraft/N88EV): [Carrier Timothy E](https://openairdocs.org/faa-owner/CARRIER%20TIMOTHY%20E), [Waynesville, OH](https://openairdocs.org/faa-place/OH/Waynesville), built 1972, S/N 64-72 - [N90979](https://openairdocs.org/aircraft/N90979): [Keyes Roger S](https://openairdocs.org/faa-owner/KEYES%20ROGER%20S), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1973, S/N 70-73 - [N9133L](https://openairdocs.org/aircraft/N9133L): [Thompson Clark J](https://openairdocs.org/faa-owner/THOMPSON%20CLARK%20J), [Rosharon, TX](https://openairdocs.org/faa-place/TX/Rosharon), built 1971, S/N 36-72 - [N9135L](https://openairdocs.org/aircraft/N9135L): [Studie Billy D](https://openairdocs.org/faa-owner/STUDIE%20BILLY%20D), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), S/N 3-71 - [N9139L](https://openairdocs.org/aircraft/N9139L): [Hurley William J III](https://openairdocs.org/faa-owner/HURLEY%20WILLIAM%20J%20III), [Abingdon, IL](https://openairdocs.org/faa-place/IL/Abingdon), built 1971, S/N 8-71 - [N9142L](https://openairdocs.org/aircraft/N9142L): [Brown Michael E Jr](https://openairdocs.org/faa-owner/BROWN%20MICHAEL%20E%20JR), [Timmonsville, SC](https://openairdocs.org/faa-place/SC/Timmonsville), built 1971, S/N 11-71 - [N9150L](https://openairdocs.org/aircraft/N9150L): [King Jessie M](https://openairdocs.org/faa-owner/KING%20JESSIE%20M), [Spring Valley, MN](https://openairdocs.org/faa-place/MN/Spring%20Valley), built 1971, S/N 12-71 - [N9155L](https://openairdocs.org/aircraft/N9155L): [Belisle Barry A](https://openairdocs.org/faa-owner/BELISLE%20BARRY%20A), [Lancaster, TX](https://openairdocs.org/faa-place/TX/Lancaster), built 1971, S/N 16-71 - [N9156L](https://openairdocs.org/aircraft/N9156L): [Lerner Michael M](https://openairdocs.org/faa-owner/LERNER%20MICHAEL%20M), [Tehachapi, CA](https://openairdocs.org/faa-place/CA/Tehachapi), built 1971, S/N 17-71 - [N9161L](https://openairdocs.org/aircraft/N9161L): [Bredlow Farming Co Inc](https://openairdocs.org/faa-owner/BREDLOW%20FARMING%20CO%20INC), [England, AR](https://openairdocs.org/faa-place/AR/England), built 1971, S/N 23-71 - [N9162L](https://openairdocs.org/aircraft/N9162L): [Branum Seth L](https://openairdocs.org/faa-owner/BRANUM%20SETH%20L), [Jonesboro, AR](https://openairdocs.org/faa-place/AR/Jonesboro), built 1971, S/N 24-72 - [N9163L](https://openairdocs.org/aircraft/N9163L): [Lewallen William J](https://openairdocs.org/faa-owner/LEWALLEN%20WILLIAM%20J), [Eloy, AZ](https://openairdocs.org/faa-place/AZ/Eloy), built 1971, S/N 25-71 - [N9164L](https://openairdocs.org/aircraft/N9164L): [Hodges Robert J](https://openairdocs.org/faa-owner/HODGES%20ROBERT%20J), [Savannah, GA](https://openairdocs.org/faa-place/GA/Savannah), built 1971, S/N 26-71 - [N9175L](https://openairdocs.org/aircraft/N9175L): [Neuroth Kurt V](https://openairdocs.org/faa-owner/NEUROTH%20KURT%20V), [Saint Charles, MO](https://openairdocs.org/faa-place/MO/Saint%20Charles), built 1971, S/N 32-72 - [N9176L](https://openairdocs.org/aircraft/N9176L): [Munoz Eduardo J](https://openairdocs.org/faa-owner/MUNOZ%20EDUARDO%20J), [Acworth, GA](https://openairdocs.org/faa-place/GA/Acworth), built 1971, S/N 35-72 - [N9177K](https://openairdocs.org/aircraft/N9177K): [Bishop David](https://openairdocs.org/faa-owner/BISHOP%20DAVID), [San Marcos, CA](https://openairdocs.org/faa-place/CA/San%20Marcos), S/N 37-72 - [N9180L](https://openairdocs.org/aircraft/N9180L): [Poynter Everett B](https://openairdocs.org/faa-owner/POYNTER%20EVERETT%20B), [Somerset, KY](https://openairdocs.org/faa-place/KY/Somerset), S/N 38-72 - [N9181L](https://openairdocs.org/aircraft/N9181L): [Brown Samuel L](https://openairdocs.org/faa-owner/BROWN%20SAMUEL%20L), [Flatonia, TX](https://openairdocs.org/faa-place/TX/Flatonia), built 1971, S/N 39-72 - [N9189L](https://openairdocs.org/aircraft/N9189L): [Parker Jeffrey D](https://openairdocs.org/faa-owner/PARKER%20JEFFREY%20D), [Chelsea, AL](https://openairdocs.org/faa-place/AL/Chelsea), S/N 33-72 - [N9190L](https://openairdocs.org/aircraft/N9190L): [Williamson Will R III](https://openairdocs.org/faa-owner/WILLIAMSON%20WILL%20R%20III), [Florence, SC](https://openairdocs.org/faa-place/SC/Florence), S/N 44-72 - [N9199L](https://openairdocs.org/aircraft/N9199L): [O Neill Mark B](https://openairdocs.org/faa-owner/O%20NEILL%20MARK%20B), [Pinckney, MI](https://openairdocs.org/faa-place/MI/Pinckney), S/N 34-72 ## NTSB investigations (19) 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 WPR26LA193](https://openairdocs.org/ntsb/WPR26LA193), May 14, 2026: Bellanca 7ACA (N9158L), Pacific City, OR, substantial damage. Probable cause: The pilot’s loss of directional control during a precautionary landing following a partial reduction in engine rpm. - [NTSB CEN23LA101](https://openairdocs.org/ntsb/CEN23LA101), Feb 4, 2023: Bellanca 7ACA (N9111L), Bayport, MN, substantial damage. Probable cause: The pilot’s poor inflight fuel monitoring that resulted in a total loss of engine power due to fuel starvation. - [NTSB ERA17LA282](https://openairdocs.org/ntsb/ERA17LA282), Aug 18, 2017: Bellanca 7ACA (N9176L), Fairhope, AL, substantial damage. Probable cause: A total loss of engine power for reasons that could not be determined because postaccident examination and a test run of the engine did not reveal any evidence of mechanical malfunctions or failures… - [NTSB FTW94FA299](https://openairdocs.org/ntsb/FTW94FA299), Sep 18, 1994: Bellanca 7ACA (N68529), Lakeside, TX, substantial damage, 1 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN MINIMUM REQUIRED AIRSPEED FOR FLIGHT. A FACTOR WAS THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. - [NTSB SEA92LA220](https://openairdocs.org/ntsb/SEA92LA220), May 30, 1992: Bellanca 7ACA (N9159L), Rosalia, WA, substantial damage. Probable cause: FAILURE OF THE TAILWHEEL SPRING BRACKET. A FACTOR TO THE ACCIDENT WAS: DIRECTIONAL CONTROL WAS NOT MAINTAINED. - [NTSB ANC90FA042](https://openairdocs.org/ntsb/ANC90FA042), Mar 24, 1990: Bellanca 7ACA (N68596), Wasilla, AK, substantial damage, 1 fatal. Probable cause: THE FAILURE OF THE PIC TO MAINTAIN SUFFICIENT AIRSPEED TO PRECLUDE A STALL. - [NTSB FTW87FA210](https://openairdocs.org/ntsb/FTW87FA210), Sep 5, 1987: Bellanca 7ACA (N68529), Graford, TX, substantial damage, 1 fatal - [NTSB LAX86LA227](https://openairdocs.org/ntsb/LAX86LA227), May 21, 1986: Bellanca 7ACA (N9158L), Lompoc, CA, substantial damage - [NTSB NYC79DFA01](https://openairdocs.org/ntsb/NYC79DFA01), Oct 16, 1978: Bellanca 7ACA (N9176L), Tupper Lake, NY, substantial damage - [NTSB LAX77DUQ08](https://openairdocs.org/ntsb/LAX77DUQ08), Nov 13, 1976: Champion 7ACA (N62965), Pacoima, CA, substantial damage - [NTSB NYC76DHA08](https://openairdocs.org/ntsb/NYC76DHA08), Aug 20, 1975: Bellanca 7AC (N9162L), Zieglerville, PA, substantial damage - [NTSB SEA75DYE38](https://openairdocs.org/ntsb/SEA75DYE38), Apr 4, 1975: Champion 7ACA (N10986), Puyallup, WA, destroyed - [NTSB MIA75DKT70](https://openairdocs.org/ntsb/MIA75DKT70), Mar 30, 1975: Bellanca 7ACA (N9189L), Delray Beach, FL, substantial damage - [NTSB MKC75DTK14](https://openairdocs.org/ntsb/MKC75DTK14), Mar 4, 1975: Bellanca 7ACA (N9156L), Madison, SD, substantial damage - [NTSB OAK75DVG38](https://openairdocs.org/ntsb/OAK75DVG38), Nov 30, 1974: Champion 7AC (N4995), Manton, CA, substantial damage - [NTSB FTW74FPA27](https://openairdocs.org/ntsb/FTW74FPA27), Jun 7, 1974: Bellanca 7ACA (N9161L), Plano, TX, substantial damage - [NTSB CHI74AC083](https://openairdocs.org/ntsb/CHI74AC083), Apr 9, 1974: Bellanca 7ACA (N68530), Rhinelander, WI, substantial damage, 1 fatal - [NTSB NYC74FHM10](https://openairdocs.org/ntsb/NYC74FHM10), Nov 7, 1973: Bellanca 7ACA (N62965), Hanover, NJ, substantial damage - [NTSB MKC72DCG37](https://openairdocs.org/ntsb/MKC72DCG37), Feb 21, 1972: Bellanca 7ACA (N9157L), Smithville, MO, substantial damage ## FAA accident and incident reports (22) 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. - [Incident 20260929013129I](https://openairdocs.org/incident/20260929013129I), Sep 29, 2026: Bellanca 7ACA (N68538), Strasburg, OH, Minor damage. On 09-29-2026 [privacy data omitted] departed 2D7 on a local training flight. The instructor was seated in the back seat and the student was seated in the… - [Accident 20260514006339A](https://openairdocs.org/incident/20260514006339A), May 14, 2026: Bellanca 7ACA (N9158L), Pacific City, OR, Substantial damage. Pilot and passenger entered the plane at pfc, started up at 15:57 local time, and taxiied to hold-short of rwy 14. A preflight runup was then conducted noting… - [Accident 20230204003119A](https://openairdocs.org/incident/20230204003119A), Feb 4, 2023: Bellanca 7ACA (N9111L), Lake Elmo, MN, Substantial damage. On February 4th, 2023 the private pilot (PIC) was conducting a time building/proficiency flight in N9111L. The PIC stated that the fuel tanks had approximately… - [Accident 20170818010579A](https://openairdocs.org/incident/20170818010579A), Aug 18, 2017: Bellanca 7ACA (N9176L), Fairhope, AL, Substantial damage. Front seat pilot was practicing touch and go landings on runway 19. During climbout after 6th landing and at approximately 500 feet AGL, pilot reports engine… - [Incident 20110603025019I](https://openairdocs.org/incident/20110603025019I), Jun 3, 2011: Bellanca 7ACA (N9133L), League City, TX, Minor damage. The pilot was on a business trip to mont belvieu, TX and then to la port, TX. The purpose for the trip to la port was to get the "tachometer" fixed, because it… - [Accident 19940918028169A](https://openairdocs.org/incident/19940918028169A), Sep 18, 1994: Bbavia 7ACA (N68529), Fort Worth, TX, Substantial damage, 1 fatal. Out of fuel. Landed in field. Got auto gas. Departed. Landed airport. Vented fuel cap. Lost power test flight. Stalled - [Accident 19920530046009A](https://openairdocs.org/incident/19920530046009A), May 30, 1992: Bbavia 7ACA (N9159L), Rosalia, WA, Substantial damage. Lost directional control. Veered off runway. Hit lights. Tried go around but settled,hit more lights. Spring broke. - [Accident 19900324005189A](https://openairdocs.org/incident/19900324005189A), Mar 24, 1990: Bbavia 7DC (N68596), Wasilla, AK, Substantial damage, 1 fatal. On proficiency flight check, stalled and crashed trying to slip for landing. Check pilot had no rear control stick. - [Accident 19870915079459A](https://openairdocs.org/incident/19870915079459A), Sep 15, 1987: Bbavia 7ACA (N68529), Graford, TX, Substantial damage, 1 fatal. Loud pop as aircraft made a right turn after takeoff then dived into a lake. Right aileron control cable had snapped - [Accident 19860521019139A](https://openairdocs.org/incident/19860521019139A), May 21, 1986: Bbavia 7ACA (N9158L), Lompoc, CA, Substantial damage. After hand propping the engine,aircraft moved breaking loose from tiedowns. Unoccupied aircraft struck parked plane. - [Incident 19860317067699I](https://openairdocs.org/incident/19860317067699I), Mar 17, 1986: Bbavia 7ACA (N9139L), Greencastle, IN. Oil spray on windscreen en route. Landed in a field. Pilot failed to secure oil filler plug after adding oil. - [Incident 19840810044939I](https://openairdocs.org/incident/19840810044939I), Aug 10, 1984: Blanca 7ACA (N9155L), Bakersfield, CA. A worn camshaft exhaust lobe caused an overheated and rough engine. Landed safely in a field. - [Incident 19840316021709I](https://openairdocs.org/incident/19840316021709I), Mar 16, 1984: Blanca 7ACA (N9133L), Chandler, AZ, Minor damage. Hand propped engine with only hand brake set. Aircraft ran into a parked aircraft when engine started. Not a pilot. - [Accident 19781016032169A](https://openairdocs.org/incident/19781016032169A), Oct 16, 1978: Blanca 7ACA (N9176L), Tupper Lake, NY, Substantial damage. Plt experienced carb icing 15 min bfr acdt. - [Accident 19761113034799A](https://openairdocs.org/incident/19761113034799A), Nov 13, 1976: Blanca 7ACA (N62965), Pacoima, CA, Substantial damage. 2 Plugs fouled. - [Accident 19750820023249A](https://openairdocs.org/incident/19750820023249A), Aug 20, 1975: Blanca 7ACA (N9162L), Zieglerville, PA, Substantial damage. Trees to side of rwy. - [Accident 19750404007759A](https://openairdocs.org/incident/19750404007759A), Apr 4, 1975: Blanca 7ACA (N10986), Puyallup, WA, Substantial damage. High trees on arpt. - [Accident 19750330015089A](https://openairdocs.org/incident/19750330015089A), Mar 30, 1975: Blanca 7ACA (N9189L), Delray Beach, FL, Substantial damage. Glider ops,plt s of arpt at abt 50 ft AGL ckg for heat lift.l wing struck gnd. - [Accident 19750304003289A](https://openairdocs.org/incident/19750304003289A), Mar 4, 1975: Blanca 7ACA (N9156L), Madison, SD, Substantial damage. While turning acft downwind acft flipped over on its back. - [Accident 19740607017739A](https://openairdocs.org/incident/19740607017739A), Jun 7, 1974: Blanca 7ACA (N9161L), Plano, TX, Substantial damage. Heavy rain in area. - [Accident 19740409012479A](https://openairdocs.org/incident/19740409012479A), Apr 9, 1974: Blanca 7ACA (N68530), Rhinelander, WI, Substantial damage. Steep turn at low alt,lost ctl. Crashed into river. - [Accident 19731107036589A](https://openairdocs.org/incident/19731107036589A), Nov 7, 1973: Blanca 7ACA (N62965), Hanover, NJ, Substantial damage. Full stall ldg in swamp to avoid trees.2 cyl eng. Spark plugs fouled,cleaned 34HRS prior. ## STCs that may be installed (OpenAirDocs) (2) 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 2A4-45-B2 - [STC SA2350NM PAGE 2](https://openairdocs.org/stc/SA2350NM%20PAGE%202): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International. Lists 2A4-45-B2 --- 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.