# Final NTSB investigations: Franklin 6A8 series

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 1 of 2 · 54 cases

## Latest cases

- [NTSB WPR25LA198](https://openairdocs.org/ntsb/WPR25LA198.md): Republic RC-3 · Coolin, ID · Accident · No injuries · Class 4 · Limited · Final report · Jun 28, 2025 · N6759K · Substantial damage
  > The pilot’s failure to maintain control of the airplane and exceedance of the critical angle of attack during takeoff in windy conditions which resulted in a subsequent hard landing.
- [NTSB ERA21LA042](https://openairdocs.org/ntsb/ERA21LA042.md): Republic RC3 · Advance, NC · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 16, 2020 · N451E · Substantial damage
  > The pilot’s inadequate preflight fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB CEN16LA355](https://openairdocs.org/ntsb/CEN16LA355.md): Republic RC3 · Post Oak, MO · Accident · Serious injuries · Limited investigation · Final report · Aug 30, 2016 · N6490K · Substantial damage
  > A partial loss of engine power due to low cylinder compression. Contributing to the loss of engine power was rust formation in the cylinders due to inactivity.
- [NTSB ERA16LA266](https://openairdocs.org/ntsb/ERA16LA266.md): Republic RC 3 · Winter Haven, FL · Accident · 1 fatal · Limited investigation · Final report · Jul 22, 2016 · N87570 · Substantial damage
  > Improper installation of a fuel line by unknown personnel, which resulted in a total loss of engine power during initial climb due to fuel starvation.
- [NTSB ERA12LA562](https://openairdocs.org/ntsb/ERA12LA562.md): Republic RC-3 · Cedar Bluff, AL · Accident · 1 fatal · Limited investigation · Final report · Sep 15, 2012 · N6072K · Substantial damage
  > The pilot's failure to see and avoid power lines during final approach to landing.
- [NTSB WPR12LA318](https://openairdocs.org/ntsb/WPR12LA318.md): Republic RC-3 · Snohomish, WA · Accident · Serious injuries · Limited investigation · Final report · Jul 21, 2012 · N87521 · Substantial damage
  > Loss of engine power during takeoff for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB WPR09LA323](https://openairdocs.org/ntsb/WPR09LA323.md): Republic RC-3 · Burley, ID · Accident · Serious injuries · Limited investigation · Final report · Jul 1, 2009 · N87487 · Substantial damage
  > The flight instructor's failure to maintain clearance from power lines during takeoff.
- [NTSB LAX07LA078](https://openairdocs.org/ntsb/LAX07LA078.md): Republic RC-3 · Julian, CA · Accident · No injuries · Limited investigation · Final report · Feb 2, 2007 · N6248K · Substantial damage
  > The failure of the propeller to crankshaft attachment bolts due to fatigue. A contributing factor was the improper installation of the propeller assembly by maintenance personnel.
- [NTSB LAX05LA172](https://openairdocs.org/ntsb/LAX05LA172.md): Republic RC-3 · Geyserville, CA · Accident · Minor injuries · Limited investigation · Final report · May 14, 2005 · N6292K · Substantial damage
  > A loss of engine power due to failure of the number 1 connecting rod bearing due to a probable oil starvation.
- [NTSB SEA03FA106](https://openairdocs.org/ntsb/SEA03FA106.md): Downer RC-3 · Yelm, WA · Accident · 1 fatal · Field investigation · Final report · Jun 17, 2003 · N6723K · Destroyed
  > The failure of the pilot to abort the takeoff roll. Factors contributing to the accident included the failure of the aircraft to accelerate for undetermined reasons and the trees.
- [NTSB SEA01LA154](https://openairdocs.org/ntsb/SEA01LA154.md): Republic RC-3 · Chimacum, WA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2001 · N6755K · Substantial damage
  > An internal ground in the right magneto followed by an internal ground evidenced by arcing in the left ignition coil unit, which led to failure of both the right magneto and the left coil ignition system respectively during cruise. Contributing factors were a…
- [NTSB CHI01LA013](https://openairdocs.org/ntsb/CHI01LA013.md): Republic RC-3 · Baraboo, WI · Accident · No injuries · Limited investigation · Final report · Oct 12, 2000 · N6175K · Substantial damage
  > the failure of the number five intake valve spring during initial climbout and that there was no suitable terrain during the forced landing. A factor was the corn crop.
- [NTSB NYC00LA169](https://openairdocs.org/ntsb/NYC00LA169.md): Republic RC3 · Speculator, NY · Accident · No injuries · Limited investigation · Final report · Jun 8, 2000 · N60CB · Substantial damage
  > The pilot inadvertently lowering the landing gear of the amphibian airplane for a water landing.
- [NTSB IAD96LA128](https://openairdocs.org/ntsb/IAD96LA128.md): Republic RC-3 · Amos, Canada · Accident · No injuries · Limited investigation · Final report · Aug 5, 1996 · N6240K · Substantial damage
  > the pilot's inadvertent wheels down landing on water. A related factor was his diverted attention during the landing.
- [NTSB FTW96LA081](https://openairdocs.org/ntsb/FTW96LA081.md): Republic RC 3 · Whitewright, TX · Accident · No injuries · Limited investigation · Final report · Dec 28, 1995 · N6127K · Substantial damage
  > The separation of a spark plug and 4 other spark plugs being 'finger' tight as a result of undertorquing by maintenance personnel when they were reinstalled following inspection. A factor was a lack of suitable terrain for the forced landing.
- [NTSB FTW91LA101](https://openairdocs.org/ntsb/FTW91LA101.md): Republic RC-3 · Kingsland, TX · Accident · Serious injuries · Limited investigation · Final report · Jun 19, 1991 · N6441K · Minor damage
  > The pilot's failure to follow procedures. A factor was the pilot's lack of expereince in seaplanes.
- [NTSB DEN85LA218](https://openairdocs.org/ntsb/DEN85LA218.md): Downer Aircraft Industries REP. Seabee RC-3 · Haugan, MT · Accident · No injuries · Limited investigation · Final report · Aug 13, 1985 · N6305K · Substantial damage
  > The plt had reconditioned N6305K and was flying the acft to his home in Texas. He continued to state that while climbing through 6500 ft, he heard an unusual noise followed by a substantial loss in pwr. The plt executed an emergency landing on a forest…
- [NTSB CHI85FA234](https://openairdocs.org/ntsb/CHI85FA234.md): Republic RC-3 · Eveleth, MN · Accident · 1 fatal · Field investigation · Final report · Jun 16, 1985 · N6121K · Destroyed
  > On takeoff from ely lake the acft turned sharp left at an altitude of 80-100 ft. at this point the acft ceased rated to climb and decended into trees and a lakeside house. The a cft was in excess of 400 lbs over gross weight. The lading gear and nose ballast…
- [NTSB MIA85LA116](https://openairdocs.org/ntsb/MIA85LA116.md): Republic RC-3 · Lake Placid, FL · Accident · No injuries · Limited investigation · Final report · Mar 9, 1985 · N6294K · Destroyed
  > The plt heard a loud noise & noticed that a fire had immediately started in the eng compartment. He made an emergency landing on a nearby lake; however, the amphibious acft continued burning & was destroyed. An investigation revealed that the fire had started…
- [NTSB LAX84LA229](https://openairdocs.org/ntsb/LAX84LA229.md): Republic RC-3 · Lakeport, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 22, 1984 · N6470K · Substantial damage
  > The plt reported that on his preflight he found the eng compression & oil level to be low but after servicing the oil to the proper level he departed & on initial climb, after reaching about 100 ft AGL, the eng started popping & losing RPM. The plt made a…
- [NTSB NYC83LA236](https://openairdocs.org/ntsb/NYC83LA236.md): Republic RC-3 · Gilderland, NY · Accident · No injuries · Limited investigation · Final report · Sep 4, 1983 · N6191K · Substantial damage
  > On the day before the accident, an emergency landing was made in a hay field after the eng lost power. An exam of the acft revealed a defective fuel line. The fuel line was repaired. During a ground run-up, the eng produced full power & the magneto check was…
- [NTSB FTW82DA254](https://openairdocs.org/ntsb/FTW82DA254.md): Downer Aircraft Industries Republic RC-3 · Llano, TX · Accident · No injuries · Final report · Jun 26, 1982 · N6441K · Substantial damage
  > The pilot was on a test flight to check the engine in the amphibious aircraft. As the landing gear was being lowered to land at the airport, a "pop" was heard. Reportedly, the noise occurred when the clevis on the rod end of the retract/extend cylinder…
- [NTSB SEA80FYE31](https://openairdocs.org/ntsb/SEA80FYE31.md): Republic RC-3 · Port Angeles, WA · Accident · No injuries · Closed · Apr 18, 1980 · N6470K · Substantial damage
- [NTSB MIA79DLA27](https://openairdocs.org/ntsb/MIA79DLA27.md): Republic RC3 · Perry, FL · Accident · No injuries · Closed · May 19, 1979 · N6204K · Substantial damage
- [NTSB IAD79FIA08](https://openairdocs.org/ntsb/IAD79FIA08.md): Republic RC-3 · Warrenton, VA · Accident · No injuries · Closed · Mar 12, 1979 · N87491 · Substantial damage
- [NTSB CHI79FEI08](https://openairdocs.org/ntsb/CHI79FEI08.md): Republic RC-3 · Sandusky Bay, OH · Accident · Minor injuries · Closed · Oct 29, 1978 · N12LS · Substantial damage
- [NTSB LAX78DVA35](https://openairdocs.org/ntsb/LAX78DVA35.md): Republic RC-3 · Buttonwillow, CA · Accident · No injuries · Closed · Apr 10, 1978 · N6392K · Substantial damage
- [NTSB IAD76AI034](https://openairdocs.org/ntsb/IAD76AI034.md): Republic RC-3 · Gastonia, NC · Accident · 1 fatal · Closed · Nov 16, 1975 · N87505 · Destroyed
- [NTSB UNK74X0108](https://openairdocs.org/ntsb/UNK74X0108.md): Republic RC-3-1 · Moon R, Canada · Accident · No injuries · Closed · May 28, 1974 · N6353K · Substantial damage
- [NTSB NYC73DNC20](https://openairdocs.org/ntsb/NYC73DNC20.md): Republic RC3 · Melvin Village, NH · Accident · No injuries · Closed · Aug 9, 1972 · N451E · Substantial damage
- [NTSB CHI72FET34](https://openairdocs.org/ntsb/CHI72FET34.md): Downer RC-3 · Ligonier, IN · Accident · Minor injuries · Closed · Jun 3, 1972 · N6097K · Substantial damage
- [NTSB NYC72FNE23](https://openairdocs.org/ntsb/NYC72FNE23.md): Republic RC-3 · Danbury, CT · Accident · No injuries · Closed · Feb 1, 1972 · N6111K · Destroyed
- [NTSB OAK72FVW17](https://openairdocs.org/ntsb/OAK72FVW17.md): Republic RC-3 · Las Vegas, NV · Accident · Minor injuries · Closed · Nov 8, 1971 · N87545 · Destroyed
- [NTSB NYC72DFJ04](https://openairdocs.org/ntsb/NYC72DFJ04.md): Republic RC-3 · Tonawanda, NY · Accident · No injuries · Closed · Jun 20, 1971 · N6551K · Substantial damage
- [NTSB MIA71DLD33](https://openairdocs.org/ntsb/MIA71DLD33.md): Republic RC-3 · Winter Haven, FL · Accident · No injuries · Closed · Nov 8, 1970 · N87537 · Substantial damage
- [NTSB LAX71FUA21](https://openairdocs.org/ntsb/LAX71FUA21.md): Republic RC-3 · Avalon, CA · Accident · No injuries · Closed · Oct 7, 1970 · N87564 · Substantial damage
- [NTSB OAK70DXQ03](https://openairdocs.org/ntsb/OAK70DXQ03.md): Republic RC-3 · Homewood, CA · Accident · No injuries · Closed · Feb 11, 1970 · N6652K · Substantial damage
- [NTSB MIA70F0163](https://openairdocs.org/ntsb/MIA70F0163.md): Republic RC-3 · Jacksonville, FL · Accident · Serious injuries · Closed · Jun 16, 1969 · N6629K · Substantial damage
- [NTSB CHI70D0010](https://openairdocs.org/ntsb/CHI70D0010.md): Republic RC-3 · Albany, KY · Accident · No injuries · Closed · Jun 8, 1969 · N6011K · Substantial damage
- [NTSB OAK69F0098](https://openairdocs.org/ntsb/OAK69F0098.md): Republic RC-3 · Sacramento, CA · Accident · Serious injuries · Closed · Jun 16, 1968 · N6375K · Destroyed
- [NTSB UNK67X0145](https://openairdocs.org/ntsb/UNK67X0145.md): Republic RC-3 · Wanapitei Lke, Canada · Accident · Minor injuries · Closed · Aug 6, 1967 · N6443K · Substantial damage
- [NTSB MKC68F0112](https://openairdocs.org/ntsb/MKC68F0112.md): Republic RC-3 · Nisswa, MN · Accident · No injuries · Closed · Jul 26, 1967 · N6342K · Substantial damage
- [NTSB NYC68A0001](https://openairdocs.org/ntsb/NYC68A0001.md): Republic RC-3 · Searsport, ME · Accident · 5 fatal · Closed · Jul 2, 1967 · N6475K · Destroyed
- [NTSB FTW67F0189](https://openairdocs.org/ntsb/FTW67F0189.md): Republic RC-3 · Benton, AR · Accident · No injuries · Closed · Aug 28, 1966 · N87515 · Substantial damage
- [NTSB MKC67F0167](https://openairdocs.org/ntsb/MKC67F0167.md): Republic RC-3 · Wyoming, MN · Accident · No injuries · Closed · Jul 29, 1966 · N6629K · Substantial damage
- [NTSB MIA66F0500](https://openairdocs.org/ntsb/MIA66F0500.md): Republic RC-3 · Fransvilla, FL · Accident · No injuries · Closed · Mar 27, 1966 · N335G · Destroyed
- [NTSB LAX66F0222](https://openairdocs.org/ntsb/LAX66F0222.md): Republic RC-3 · Pacoima, CA · Accident · No injuries · Closed · Jan 8, 1966 · N87545 · Substantial damage
- [NTSB FTW66D0333](https://openairdocs.org/ntsb/FTW66D0333.md): Republic RC-3 · Fort Worth, TX · Accident · No injuries · Closed · Sep 25, 1965 · N6328K · Substantial damage
- [NTSB NYC66D0184](https://openairdocs.org/ntsb/NYC66D0184.md): Republic RC-3 · East Rodman, NY · Accident · No injuries · Closed · Aug 15, 1965 · N6294K · Substantial damage
- [NTSB NYC66F0174](https://openairdocs.org/ntsb/NYC66F0174.md): Republic RC-3 · Camillus, NY · Accident · Minor injuries · Closed · Aug 12, 1965 · N6657K · Substantial damage

Next page: https://openairdocs.org/ntsb.md?engine=27030&status=final&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27030'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27030&status=final

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