NTSB investigations: Franklin 6A-350SER, AK
7 cases on aircraft whose registry engine model is Franklin 6A-350SER. 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.
Cases per year
| 1974 | 1 |
|---|---|
| 1978 | 1 |
| 1988 | 1 |
| 1991 | 1 |
| 2003 | 1 |
| 2013 | 1 |
| 2025 | 1 |
Where
Open the mapLatest cases
Query with SQL
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\" = 'AK' 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 ('27023'))
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" = 'AK' 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 ('27023'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 ANC25LA059Accident · No injuriesClass 4 · LimitedFinal reportCessna 170B · Denali Park, AKThe failure of the left main landing gear spring due to a fatigue fracture during landing on uneven terrain.NTSB ANC13CA101Accident · No injuriesData collectionFinal reportCessna 170B · Iliamna, AKThe pilot's inadvertent encounter with a mound while landing on a remote airstrip.NTSB ANC03LA083Accident · Minor injuriesLimited investigationFinal reportMaule M-4 · Kobuk, AKThe pilot's inadvertent use of diesel fuel in a gasoline engine which resulted in a partial loss of engine power, and subsequent collision with trees during a forced landing after takeoff. A factor contributing to the accident was the pilot's inadequate…NTSB ANC91LA078Accident · No injuriesLimited investigationFinal reportMaule M4-220-C · Fairbanks, AKThe pilot's failure to maintain airspeed during the initial climb and exceeding the gross weight of the airplane. Contributing to the accident was high vegetation.NTSB ANC88LA143Accident · No injuriesLimited investigationFinal reportMaule M-4 · Cordova, AKWhile on base leg to the airport, the engine stopped producing power forcing the pilot to land the airplane on the tundra short of the runway. Upon landing the airplane nosed over. Subsequent examination of the engine showed water in the carburetor. The water…NTSB ANC78FAA22Accident · Minor injuriesClosedMaule M-4 · North Pole, AKNTSB ANC75DAA06Accident · No injuriesClosedMaule M4180C · Fairbanks, AK