NTSB investigations: Franklin 6V4 series
10 cases on aircraft whose registry engine model is Franklin 6V4 series, where the first occurrence was “Loss of engine power(total) - nonmechanical”. 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
| 1982 | 1 |
|---|---|
| 1984 | 1 |
| 1987 | 1 |
| 1992 | 2 |
| 1998 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2004 | 1 |
| 2005 | 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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27033')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 353))
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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27033')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 353))
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 LAX05LA112Accident · No injuriesLimited investigationFinal reportHiller UH-12B · Thermal, CAthe pilot's inadequate in-flight planning and failure to refuel the helicopter, which resulted in fuel exhaustion.NTSB ANC04LA027Accident · No injuriesLimited investigationFinal reportHiller UH-12B · Bradenton, FLThe pilot's inadequate in-flight planning/decision which resulted in fuel exhaustion. Also causal was the pilot's failure to maintain adequate rotor speed, resulting in a hard landing.NTSB CHI01FA231Accident · 2 fatalField investigationFinal reportWorld Helicopters 47D1 · Ballard, MOThe pilot's improper preflight planning which resulted in fuel exhaustion, and the pilot's subsequent improper autorotation.NTSB LAX00LA288Accident · No injuriesLimited investigationFinal reportBell 47D · Stockton, CAThe pilot's inadequate planning by which he miscalculated fuel consumption which resulted in fuel exhaustion.NTSB MIA98LA051Accident · No injuriesLimited investigationFinal reportBell 47D1 · Bunnell, FLthe student pilot's improper planning/decision, which resulted in fuel exhaustion, loss of engine power, and a forced landing.NTSB SEA92LA141Accident · No injuriesLimited investigationFinal reportBell-World 47D1 · Wenatchee, WACarburetor ice and the pilot in command's not being able to maintain clearance. Factors contributing to the accident were: carburetor icing conditions and tree(s).NTSB MIA92LA102Accident · Minor injuriesLimited investigationFinal reportBell 47-D-1 · Fayette, MSThe pilot in commands failure to insure the proper fuel quantity for the flight was placed on the aircraft and his failure to monitor fuel quantity during flight resulting in fuel exhaustion.NTSB LAX87LA294Accident · No injuriesLimited investigationFinal reportBell 47D-1 · Taft, CAThe plt rprtd the eng lost power at about 300' AGL after the helicopter had flown aprx 2.7 hrs without refueling. He initiated an autorotative landing; however, before touchdown, the main rotor blades contacted & severed the tail boom. An exam revealed the…NTSB FTW85LA043Accident · No injuriesLimited investigationFinal reportBell 47D1 · Terlingua, TXShortly after the plt took off on a sight-seeing flt, the eng lost power when the helicopter was over rough terrain at about 200 ft AGL. During an autorotative landing, the helicopter rocked forward causing the main rotor blades to strike the tail boom.…NTSB CHI82DA196Accident · No injuriesFinal reportBell 47D1 · Le Sueur, MNDuring a spraying operation, the aircraft was being refueled from a 200 gal fuel tank, mounted on the rear of a truck. The truck was parked on a slight slope with the outlet for the servicing hose at the lower end. After the helicopter was serviced with 14…