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NTSB investigations: Franklin 6A4150 series, CA

59 cases on aircraft whose registry engine model is Franklin 6A4150 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19642026

NTSB investigations: Franklin 6A4150 series, CA per year, 1964–2026: 59 cases
1964	5
1965	2
1966	4
1967	3
1968	5
1969	1
1970	2
1971	3
1974	2
1975	3
1977	1
1979	1
1980	2
1982	1
1984	4
1985	2
1986	1
1987	3
1989	2
1991	1
1996	1
1997	1
1998	1
2000	1
2001	1
2005	2
2006	1
2007	1
2013	1
2023	1

Where

Latest cases

Query with SQL

SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27024')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
  WHERE c.\"eventStateOrRegion\" = 'CA' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27024'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27024'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

NTSB WPR23LA359Accident · No injuriesClass 4 · LimitedFinal reportStinson 108-1 · San Diego, CAThe pilot’s failure to maintain directional control during landing in gusty wind conditions that resulted in a ground loop.Sep 27, 2023 · N9128K · Substantial damage NTSB WPR14LA079Accident · No injuriesLimited investigationFinal reportStinson 108 1 · Lodi, CAThe fatigue failure of the crankshaft, which resulted in a total loss of engine power and subsequent forced landing.Dec 27, 2013 · N8848K · Substantial damage NTSB LAX07CA152Accident · No injuriesData collectionFinal reportStinson 108 · Auburn, CAThe pilot's failure to maintain an adequate airspeed during an aborted landing that resulted in a stall/mush.May 5, 2007 · N97648 · Substantial damage NTSB LAX07LA040Accident · No injuriesLimited investigationFinal reportStinson 108-1 · San Jose, CAPartial loss of engine power due to a seized exhaust valve during cruise flight. Rough terrain at the forced landing site was a contributing factor.Nov 20, 2006 · N97949 · Substantial damage NTSB LAX05CA246Accident · Minor injuriesData collectionFinal reportStinson 108 · Hesperia, CAthe pilot's failure to maintain directional control during landing rollout.Jul 26, 2005 · N97492 · Substantial damage NTSB LAX05FA184Accident · 2 fatalField investigationFinal reportBellanca 14-13-3 · Caliente, CAThe pilot's inadvertent encounter with instrument meteorological conditions and failure to maintain adequate terrain clearance, which resulted in controlled flight into the terrain. Contributing factors were the pilots' delayed decision to reverse course, the…May 20, 2005 · N6511N · Destroyed NTSB LAX01LA131Accident · Serious injuriesLimited investigationFinal reportStinson 108-1 · Redlands, CAA total loss of engine power during cruise flight over rough terrain for undetermined non-mechanical reasons.Mar 31, 2001 · N8158K · Substantial damage NTSB LAX00LA200Accident · No injuriesLimited investigationFinal reportStinson 108-1 · Los Angeles, CAThe pilot's loss of directional control during landing rollout due to the pilot's foot becoming wedged under a rudder pedal, which restricted its movement.May 21, 2000 · N8398K · Substantial damage NTSB LAX98LA303Accident · No injuriesLimited investigationFinal reportBellanca 14-13-2 · Santa Rosa, CAThe pilot's inadequate visual lookout during taxiing operations. A factor was the pilot's diverted attention while taxiing.Sep 22, 1998 · N74457 · Substantial damage NTSB LAX97LA134Accident · No injuriesLimited investigationFinal reportBellanca 14-13 · Oroville, CAa loss of engine power due to connecting rod bolt failure. The reason for the bolt failure was not determined. A contributing factor was the presence of trees in the emergency landing path.Mar 28, 1997 · N86851 · Substantial damage NTSB LAX96LA329Accident · Minor injuriesLimited investigationFinal reportStinson 108 · Quincy, CAthe pilot's over leaning of the fuel mixture, which resulted in the initial loss of engine power; and continued fuel starvation, resulting from the pilot's inadvertent mispositioning of the fuel selector valve during an attempted restart of the engine.Sep 8, 1996 · N97337 · Substantial damage NTSB LAX92LA013Accident · No injuriesLimited investigationFinal reportStinson 108-8 · Susanville, CAAn inadvertent stall due to the failure of the pilot to maintain a correct airspeed during the approach.Oct 12, 1991 · N87607 · Substantial damage NTSB LAX89LA298Accident · No injuriesLimited investigationFinal reportStinson 108 · Cool, CAFailure of the #2 piston. Failure of the mechanic to properly overhaul the engine was a related factor.Sep 1, 1989 · N97628 · Substantial damage NTSB LAX89LA168Accident · Minor injuriesLimited investigationFinal reportStinson 108 · Avalon, CAThe pilot's inadequate compensation for the downdrafts he encountered and the delay in his decision to perform a go-around.Apr 22, 1989 · N97169 · Substantial damage NTSB LAX87LA232Accident · No injuriesLimited investigationFinal reportBellanca 14-13-2 · Rancho Calif, CAThe plt elected to make a precautionary landing due to deteriorating wx along his route of flt. He stated that there was a x-wind from the left when he landed on rwy 30. Drg the landing, the acft drifted off the rwy & one of the main landing gear mired in…Jun 7, 1987 · N86789 · Substantial damage NTSB LAX87LA194Accident · Minor injuriesLimited investigationFinal reportStinson 108 · Healdsburg, CADuring what was supposed to be a taxi test, the plt decided to takeoff when he lost control of the acft. The acft veered to the right off the rwy and collided with the terrain. The plt had flown the acft for the first time with the owner the day before the…Apr 5, 1987 · N9216K · Substantial damage NTSB LAX87LA148Accident · No injuriesLimited investigationFinal reportStinson 108-1 · Rio Vista, CAThe aircraft nosed over in soft soil after a forced landing. The aircraft's engine failed during the departure climb and the pilot was unable to restart it. The pilot accomplished a forced landing to a field. The aircraft nosed over when the nose gear became…Mar 17, 1987 · N97115 · Substantial damage NTSB LAX86LA255Accident · No injuriesLimited investigationFinal reportStinson 108-1 · Quincy, CAThe commercial plt/cfi, attempted to takeoff when a left 40 deg, 15 to 25 knot crosswind existed. The plt lost directional control of the acft, & when attempting to abort the takeoff the acft's gear collapsed & the acft collided with a drainage ditch. The plt…Jun 16, 1986 · N97201 · Substantial damage NTSB LAX85LA266Accident · No injuriesLimited investigationFinal reportStinson 108-1 · Hesperia, CAWhile en route, the plt noted thunderstorms & towering cumulus clouds over the tehachapi mountains & elected to divert to Hesperia. He stated that all fields within range had 'severe winds and storms closing.' He said that during the landing at Hesperia,…Jun 2, 1985 · N97935 · Substantial damage NTSB LAX85LA141Accident · Minor injuriesLimited investigationFinal reportBellanca 14-13-2 · Corona, CAWhile the acft was on final apch the plt tried to slow the acft by lowering the landing gear and flaps. The acft sink rate increased and the acft contacted trees before the plt applied power. The acft touched down 50 ft short of rwy in soft ground where the…Feb 15, 1985 · N74315 · Substantial damage NTSB LAX85FA038Accident · 1 fatalField investigationFinal reportStinson Voyager 150 · Meadow Vista, CAThe acft collided with terrain while maneuvering northeast of auburn airport during a VFR personal flt. The plt advised sacramento TRACON that he had auburn arpt in sight. However, TRACON observed N97638 fly over & pass auburn arpt in a northerly direction &…Nov 3, 1984 · N97638 · Destroyed NTSB LAX84LA365Accident · No injuriesLimited investigationFinal reportStinson 108 · Camarillo, CAA prospective buyer in the left seat was initiating a takeoff in a tail wheel acft when the acft ground looped and the right main landing gear collapsed. The owner in the right seat was unable to correct the situation in time. The buyer had professed…Jun 23, 1984 · N97205 · Substantial damage NTSB LAX84LA358Accident · No injuriesLimited investigationFinal reportBellanca 14-13 · Sacramento, CAThe plt reported that the fuel pump failed in flt & he made an emergency landing on a private strip. He said that he landed hard & the acft nosed over.Jun 17, 1984 · N74200 · Substantial damage NTSB LAX84LA357Accident · No injuriesLimited investigationFinal reportBellanca 14-13 · Coalinga, CAThe plt was #2 behind another acft. He reported that he was so intent on the acft ahead (taxiing off the rwy) that he had decided to go around. He then changed his mind & decided to land instead. The acft touched down short of the rwy. He reported that during…Jun 17, 1984 · N74431 · Substantial damage NTSB LAX82DA352Accident · No injuriesFinal reportBellanca 14-13-2 · San Jose, CAThe acft landed short of the rwy. The plt stated he was demonstrating a 3-point landing & his attention was diverted by answering a question.Sep 22, 1982 · N74440 · Substantial damage NTSB LAX80FUG57Accident · No injuriesClosedStinson 108-1 · Banning, CASep 20, 1980 · N8717K · Substantial damage NTSB LAX80DVA31Accident · No injuriesClosedStinson 108-1 · Farmersville, CAApr 17, 1980 · N97836 · Substantial damage NTSB LAX79FA029Accident · 2 fatalClosedBellanca 14-13 · Compton, CAFeb 10, 1979 · N86724 · Destroyed NTSB OAK77DVD33Accident · No injuriesClosedStinson 108-1 · Healdsburg, CAMay 14, 1977 · N97115 · Substantial damage NTSB LAX76FUA04Accident · No injuriesClosedBellanca 14-132 · Long Beach, CAAug 23, 1975 · N74306 · Substantial damage NTSB OAK76DVD04Accident · No injuriesClosedStinson 108-1 · Concord, CAAug 17, 1975 · N9092K · Substantial damage NTSB OAK76DVG08Accident · No injuriesClosedStinson 108 · Vacaville, CAJul 19, 1975 · N97342 · Substantial damage NTSB LAX75D4G23Accident · No injuriesClosedStinson 108-1 · Rubidoux, CADec 1, 1974 · N8358K · Substantial damage NTSB LAX74FUQ33Accident · Serious injuriesClosedStinson 108 · Santa Paula, CAApr 7, 1974 · N40198 · Substantial damage NTSB LAX72DUQ39Accident · Minor injuriesClosedBellanca 14-13 · Saugus, CAOct 30, 1971 · N74421 · Substantial damage NTSB OAK72DVA18Accident · No injuriesClosedStinson 108-1 · Porterville, CASep 5, 1971 · N9041K · Substantial damage NTSB OAK71DVA94Accident · No injuriesClosedStinson 108-1 · Lone Pine, CAJun 20, 1971 · N9193K · Substantial damage NTSB OAK70DVD25Accident · No injuriesClosedStinson 108-1 · Point Arena, CAMay 30, 1970 · N9145K · Substantial damage NTSB LAX70FUQ29Accident · Minor injuriesClosedStinson 108 · Santa Paula, CAMay 21, 1970 · N97292 · Substantial damage NTSB OAK69D0221Accident · No injuriesClosedBellanca 14-13 · San Jose, CAJan 26, 1969 · N74440 · Substantial damage NTSB OAK69F0185Accident · No injuriesClosedBellanca 14-12F · Milpitas, CANov 16, 1968 · N28984 · Substantial damage NTSB OAK69D0071Accident · Minor injuriesClosedStinson 108-1 · Livermore, CAJul 29, 1968 · N97882 · Substantial damage NTSB LAX68D0338Accident · No injuriesClosedBellanca 14-13 · Colton, CAFeb 10, 1968 · N74328 · Substantial damage NTSB LAX68D0330Accident · Minor injuriesClosedStinson 108-1 · Redlands, CAJan 21, 1968 · N8233K · Substantial damage NTSB LAX68F0278Accident · Minor injuriesClosedCessna 150H · San Frnando, CAJan 7, 1968 · N7004S · 2 aircraft · Substantial damage NTSB LAX68D0255Accident · No injuriesClosedBellanca 14-13 · Compton, CADec 31, 1967 · N74368 · Substantial damage NTSB OAK68D0208Accident · No injuriesClosedBellanca 14-13 · Clarksburg, CAAug 3, 1967 · N86898 · Substantial damage NTSB OAK68D0076Accident · No injuriesClosedStinson 108 · Jackson, CAMay 20, 1967 · N97602 · Substantial damage NTSB LAX67F0195Accident · No injuriesClosedBellanca 14-13 · Hawthorne, CANov 6, 1966 · N86943 · Substantial damage NTSB OAK66A0060Accident · 2 fatalClosedStinson 108-1 · Samoa, CAJun 27, 1966 · N9225K · Destroyed