# Final NTSB investigations: Franklin 6V 350 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 4 · 155 cases

## Latest cases

- [NTSB ERA22LA052](https://openairdocs.org/ntsb/ERA22LA052.md): Maule M-4-220C · Ridgeway, VA · Accident · No injuries · Class 4 · Limited · Final report · Nov 7, 2021 · N51127 · Substantial damage
  > The pilot’s improper fuel management which resulted in a loss of engine power due to fuel exhaustion. Contributing to the accident was the pilot’s inadequate preflight inspection.
- [NTSB ERA21LA155](https://openairdocs.org/ntsb/ERA21LA155.md): Socata MS894A · Monroe, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 15, 2021 · N42BF · Substantial damage
  > Maintenance personnel’s failure to properly inspect and maintain the airplane’s engine cowling latches, which resulted in the in-flight separation of the engine cowling and a subsequent forced landing.
- [NTSB CEN17LA375](https://openairdocs.org/ntsb/CEN17LA375.md): Hiller UH 12A · Griffith, IN · Accident · No injuries · Limited investigation · Final report · Sep 11, 2017 · N2686 · Substantial damage
  > The loss of tail rotor thrust due to a failed tail rotor driveshaft, which resulted in a loss of tail rotor control and a hard landing.
- [NTSB ERA17FA164](https://openairdocs.org/ntsb/ERA17FA164.md): Bell-Carson 47G Super C 4 · Timmonsville, SC · Accident · 1 fatal · Field investigation · Final report · Apr 21, 2017 · N865Z · Destroyed
  > The pilot's decision to maneuver the helicopter at a low altitude near trees, which resulted in collision with the trees.
- [NTSB GAA17CA176](https://openairdocs.org/ntsb/GAA17CA176.md): Stump Great Lakes 2T 1A · Monongahela, PA · Accident · No injuries · Data collection · Final report · Feb 22, 2017 · N305Y · Substantial damage
  > The pilot’s failure to maintain directional control of the airplane during the landing roll with crosswind conditions.
- [NTSB GAA16CA141](https://openairdocs.org/ntsb/GAA16CA141.md): Maule M 4 · Anchorage, AK · Accident · No injuries · Data collection · Final report · Feb 13, 2016 · N2032U · Substantial damage
  > The inadvertent rudder input by the passenger, resulting in a runway excursion during takeoff and collision with a taxiway sign.
- [NTSB ERA14LA295](https://openairdocs.org/ntsb/ERA14LA295.md): Maule M4-220C · Cherryville, NC · Accident · No injuries · Limited investigation · Final report · Jun 17, 2014 · N535TJ · Substantial damage
  > The pilot’s improper landing flare, which resulted in a hard landing and subsequent main landing gear collapse.
- [NTSB ERA13LA127](https://openairdocs.org/ntsb/ERA13LA127.md): Hiller UH-12B · Merritt Island, FL · Accident · Minor injuries · Limited investigation · Final report · Feb 6, 2013 · N5072R · Substantial damage
  > A total loss of engine power due to fuel starvation, which resulted from an overstress failure of a fitting on the fuel supply line and led to an autorotation and hard landing.
- [NTSB ERA12LA071](https://openairdocs.org/ntsb/ERA12LA071.md): Siai-Marchetti S205-22R · Okeechobee, FL · Accident · No injuries · Limited investigation · Final report · Nov 5, 2011 · N729WA · Substantial damage
  > A partial loss of engine power due to a failure of the drive bearings in the alternator drive system. Contributing to the accident was the inadequate maintenance.
- [NTSB CEN11LA061](https://openairdocs.org/ntsb/CEN11LA061.md): Siai-Marchetti S.205/22R · Fruitvale, TX · Accident · Serious injuries · Limited investigation · Final report · Nov 5, 2010 · N971WA · Substantial damage
  > A total loss of engine power due to fuel exhaustion as a result of the pilot's inadequate fuel planning.
- [NTSB ERA11FA021](https://openairdocs.org/ntsb/ERA11FA021.md): Siai-Marchetti S.205/22R · Farmingdale, NY · Accident · 1 fatal · Field investigation · Final report · Oct 17, 2010 · N934W · Substantial damage
  > A loss of engine power during a low approach for undetermined reasons.
- [NTSB CEN10CA087](https://openairdocs.org/ntsb/CEN10CA087.md): Maule M-4-220C · Pearsall, TX · Accident · No injuries · Data collection · Final report · Jan 2, 2010 · N2028U · Substantial damage
  > A total loss of engine power due to fuel exhaustion as a result of the pilot’s inadequate preflight planning.
- [NTSB ANC09CA044](https://openairdocs.org/ntsb/ANC09CA044.md): Maule M-4-220C · Nenana, AK · Accident · No injuries · Data collection · Final report · May 17, 2009 · N2031U · Substantial damage
  > The pilot's failure to maintain directional control while landing, resulting in a ground loop and substantial damage to the airplane.
- [NTSB WPR09FA176](https://openairdocs.org/ntsb/WPR09FA176.md): Maule M-4-220C · Hungry Horse, MT · Accident · 1 fatal · Field investigation · Final report · Apr 1, 2009 · N2007U · Destroyed
  > The pilot's improper decision to continue flight into an area of reduced visibility and snow showers during cruise flight, which resulted in the pilot's spatial disorientation and subsequent loss of aircraft control.
- [NTSB SEA08CA086](https://openairdocs.org/ntsb/SEA08CA086.md): Maule M-4 · Jerome, ID · Accident · No injuries · Data collection · Final report · Mar 5, 2008 · N2039U · Substantial damage
  > The failure of both pilots to maintain directional control of the airplane during takeoff.
- [NTSB ANC08LA003](https://openairdocs.org/ntsb/ANC08LA003.md): Maule M-5-220C · Aniak, AK · Accident · No injuries · Limited investigation · Final report · Oct 8, 2007 · N62029 · Substantial damage
  > The pilot's improper fuel tank selection and fuel starvation, while doing touch-and-go landings.
- [NTSB CHI07CA298](https://openairdocs.org/ntsb/CHI07CA298.md): Maule M-4-220C · Keene, ND · Accident · Minor injuries · Data collection · Final report · Sep 12, 2007 · N40325 · Substantial damage
  > The pilot's failure to maintain control of the airplane during takeoff due to the high crosswind condition. Contributing factors were the high, gusting crosswind, and the tree.
- [NTSB NYC07LA146](https://openairdocs.org/ntsb/NYC07LA146.md): Bell-Carson 47G-Super C-4 · Wall Township, NJ · Accident · No injuries · Limited investigation · Final report · Jun 20, 2007 · N867Z · Substantial damage
  > A total failure of the number one connecting rod during approach.
- [NTSB LAX06LA109](https://openairdocs.org/ntsb/LAX06LA109.md): SIAI-Marchetti S.205/22R · Phoenix, AZ · Accident · Minor injuries · Limited investigation · Final report · Feb 12, 2006 · N981WA · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB LAX05CA260](https://openairdocs.org/ntsb/LAX05CA260.md): Maule M-4-220C · Tucson, AZ · Accident · No injuries · Data collection · Final report · Aug 4, 2005 · N2020U · Substantial damage
  > the pilot's failure to maintain directional control.
- [NTSB SEA05LA101](https://openairdocs.org/ntsb/SEA05LA101.md): Maule M-4-220C · Driggs, ID · Accident · No injuries · Limited investigation · Final report · May 21, 2005 · N40318 · Substantial damage
  > The pilot's failure to compensate for wind conditions, which resulted in a ground loop/swerve during the landing roll. A crosswind was a factor.
- [NTSB CHI04LA137](https://openairdocs.org/ntsb/CHI04LA137.md): Cessna 175 · Blissfield, MI · Accident · Minor injuries · Limited investigation · Final report · Jun 4, 2004 · N9401B · Substantial damage
  > The pilot selected the wrong runway on which to land which resulted in exceeding the proper touchdown point during landing. Factors associated with the accident were the tailwind condition and the drainage ditch which the airplane contacted.
- [NTSB NYC03LA159](https://openairdocs.org/ntsb/NYC03LA159.md): Maule M-4-220C · Taunton, MA · Accident · No injuries · Limited investigation · Final report · Jun 28, 2003 · N2030U · Substantial damage
  > The pilot's failure to maintain directional control while landing and the CFI's delayed remedial action.
- [NTSB ANC01FA095](https://openairdocs.org/ntsb/ANC01FA095.md): Cessna 172 · Eagle River, AK · Accident · Serious injuries · Field investigation · Final report · Aug 1, 2001 · N5312T · Substantial damage
  > The fatigue induced fracture of a connecting rod wrist pin, resulting in a complete loss of engine power.
- [NTSB LAX99LA133](https://openairdocs.org/ntsb/LAX99LA133.md): Maule M-4-220C · Prescott, AZ · Accident · No injuries · Limited investigation · Final report · Feb 15, 1999 · N2077U · Substantial damage
  > The pilot's inadequate compensation for the crosswind condition, which led to a loss of directional control and an inadvertent ground loop.
- [NTSB ANC97LA142](https://openairdocs.org/ntsb/ANC97LA142.md): Maule ML-4-220C · Aniak, AK · Accident · No injuries · Limited investigation · Final report · Sep 4, 1997 · N2048U · Substantial damage
  > The inadvertent swerve during landing on calm water. A factor was the pilot's lack of certification in single engine seaplanes.
- [NTSB CHI97LA258](https://openairdocs.org/ntsb/CHI97LA258.md): Maule M-4-220C · Bemidgi, MN · Accident · No injuries · Limited investigation · Final report · Aug 1, 1997 · N40354 · Substantial damage
  > the pilot's failure or inability to maintain directional control of the airplane, as a result of an undetermined anomaly concerning of the right main landing gear brake.
- [NTSB LAX97LA211](https://openairdocs.org/ntsb/LAX97LA211.md): Maule M-4-220C · Gualala, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 14, 1997 · N40654 · Destroyed
  > continued VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain sufficient altitude/clearance from tall trees. The weather conditions (low ceiling and fog) were related factors.
- [NTSB FTW97LA205](https://openairdocs.org/ntsb/FTW97LA205.md): Maule M-4-220C · Englewood, CO · Accident · No injuries · Limited investigation · Final report · May 25, 1997 · N9865M · Substantial damage
  > failure of the pilot to maintain directional control of the airplane during the landing roll. The gusty crosswind condition was a related factor.
- [NTSB CHI96LA213](https://openairdocs.org/ntsb/CHI96LA213.md): Cessna 172 · Conway, MI · Accident · No injuries · Limited investigation · Final report · Jun 23, 1996 · N3823S · Substantial damage
  > A crack in the intake manifold which led to oil exhaustion and subsequent piston failure. A factor was the soft field.
- [NTSB SEA94LA081](https://openairdocs.org/ntsb/SEA94LA081.md): Maule M-4-220C · Dubois, ID · Accident · No injuries · Limited investigation · Final report · Mar 14, 1994 · N40318 · Substantial damage
  > The pilot's inadequate visual lookout. Factors include light conditions at dusk.
- [NTSB LAX93FA272](https://openairdocs.org/ntsb/LAX93FA272.md): Bell 47G2-M · S. Sn Francisco, CA · Accident · 1 fatal · Field investigation · Final report · Jul 2, 1993 · N2473B · Destroyed
  > The pilot's inadequate preflight planning/preparation which resulted in flight into high winds, turbulence and windshear.
- [NTSB SEA92LA189](https://openairdocs.org/ntsb/SEA92LA189.md): Hiller UH-12C · Concrete, WA · Accident · Minor injuries · Limited investigation · Final report · Aug 24, 1992 · N37667 · Substantial damage
  > The loss of engine power due to fuel exhaustion, resulting from the IMPR0PER in-flight planning by the pilot in command and his failure to select a proper touchdown point for an emergency forced landing. A factor relating to the accident was the uneven…
- [NTSB ANC91LA054](https://openairdocs.org/ntsb/ANC91LA054.md): Maule M-4-220C · Beluga, AK · Accident · No injuries · Limited investigation · Final report · May 2, 1991 · N40676 · Substantial damage
  > The engine failure due to undetermined causes. Contributing to the accident was the unsuitability of the available landing area.
- [NTSB SEA90LA145](https://openairdocs.org/ntsb/SEA90LA145.md): Maule M-4-220C · Missoula, MT · Accident · No injuries · Limited investigation · Final report · Jul 21, 1990 · N2007U · Substantial damage
  > Pilot's failure to maintain directional control during the landing roll.
- [NTSB MKC90LA117](https://openairdocs.org/ntsb/MKC90LA117.md): Bell 47G · Wynne, AR · Accident · Serious injuries · Limited investigation · Final report · May 14, 1990 · N41SD · Substantial damage
  > Landing gear skid entangled with a fuel hose. A factor was the pilot's inadequate preflight inspection.
- [NTSB MIA90LA112](https://openairdocs.org/ntsb/MIA90LA112.md): Cessna 172D · Isla Grande, PR · Accident · Minor injuries · Limited investigation · Final report · Apr 28, 1990 · N2670U · Substantial damage
  > Improper use of carburetor heat by the pilot, which resulted in carburetor ice. The weather (carburetor icing condition) was a related factor.
- [NTSB MIA90LA004](https://openairdocs.org/ntsb/MIA90LA004.md): Maule M-4-220C · Orlando, FL · Accident · No injuries · Limited investigation · Final report · Oct 6, 1989 · N40340 · Substantial damage
  > Failure of the left main landing gear.
- [NTSB ANC89LA110](https://openairdocs.org/ntsb/ANC89LA110.md): Maule M-4-2205 · Beluga, AK · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 1989 · N40676 · Substantial damage
  > The pilot's failure to properly correct for a crosswind during landing which resulted in a loss of control.
- [NTSB MIA89LA092](https://openairdocs.org/ntsb/MIA89LA092.md): Bell 47G · Oklawaha, FL · Accident · No injuries · Limited investigation · Final report · Feb 24, 1989 · N863Z · Substantial damage
  > Pilot's failure to properly control the helicopter during an attempted landing on the back of a truck. Contributing to the accident was the pilot's lack of experience in performing similar landings.
- [NTSB ATL87LA229](https://openairdocs.org/ntsb/ATL87LA229.md): Bell 47G (TOM CAT) · Dothan, AL · Accident · Minor injuries · Limited investigation · Final report · Aug 10, 1987 · N10175 · Substantial damage
  > The plt rprtd that while he was making a turn-around over trees after the 1st swath run, the helicopter enctrd a sudden wind change. He stated that the wind cond was from a cumulus buildup which put him in a tailwind situation. As he completed his turn with…
- [NTSB NYC87LA210](https://openairdocs.org/ntsb/NYC87LA210.md): Bell 47G3 · Marston Mills, MA · Accident · Minor injuries · Limited investigation · Final report · Jul 24, 1987 · N6355 · Substantial damage
  > The helicopter reached an altitude of about 50 feet when a loss of power was experienced. Immediately the pilot set up for an emergency landing and set the helicopter down. The aircraft, however, collided with the ground hard and incurred substantial damage.…
- [NTSB NYC87LA182](https://openairdocs.org/ntsb/NYC87LA182.md): Maule M-4 · Wellsville, NY · Accident · No injuries · Limited investigation · Final report · Jun 20, 1987 · N40354 · Substantial damage
  > The flight experienced a violent shimmy upon t/d and the acft veered to the right. The pilot made a go-around and experienced the same condition on the second t/d. on the third t/d, the pilot landed but was only able to maintain control of the acft until it…
- [NTSB CHI87FA139](https://openairdocs.org/ntsb/CHI87FA139.md): Bell 47G · Dayton, MN · Accident · 2 fatal · Field investigation · Final report · Jun 3, 1987 · N128B · Destroyed
  > Aircraft collided with terrain after tailboom structure failed because of internal corrosion. The aircraft was not registered at the time of the accident and the pilot/operator failed to assure that proper or timely preventive maintenance was performed on the…
- [NTSB SEA86LA164](https://openairdocs.org/ntsb/SEA86LA164.md): Maule M-4-220C · Juneau, AK · Accident · No injuries · Limited investigation · Final report · Jul 9, 1986 · N40646 · Substantial damage
  > The acft veered left and ground looped during landing roll. The right main gear strut collapsed during the landing. The plt had 5 hours total flt time in this acft and stated the toe brakes seemed 'touchy' during the landing.
- [NTSB NYC85FHJ05](https://openairdocs.org/ntsb/NYC85FHJ05.md): Maule M-4-220C · Somers, NY · Accident · No injuries · Final report · Aug 17, 1985 · N40326 · Destroyed
  > The acft stalled & nosed over during an attempted go-around after a fast approach to a gravel landing strip which was 5 miles from the planned destination. The plt said he added power to go around when he thought his airspeed was too high. The acft dropped on…
- [NTSB LAX84LA271](https://openairdocs.org/ntsb/LAX84LA271.md): Maule M-4-220C · Vacaville, CA · Accident · No injuries · Limited investigation · Final report · Apr 28, 1984 · N40329 · Substantial damage
  > The flight was conducted for a sales demonstration. Both occupants were pilots. Two landings were performed by the acft owner. The third landing was performed by the prospective buyer and during touchdown the acft bounced. The owner applied power to recover.…
- [NTSB MIA84LA103](https://openairdocs.org/ntsb/MIA84LA103.md): Maule M4-220 · Boca Raton, FL · Accident · No injuries · Limited investigation · Final report · Mar 10, 1984 · N40330 · Destroyed
  > The plt stated that while practicing touch & go's he lost directional control & the left landing gear collapsed.
- [NTSB MIA83LA035](https://openairdocs.org/ntsb/MIA83LA035.md): Maule M-5-220C · Near Ocala, FL · Accident · Minor injuries · Limited investigation · Final report · Nov 26, 1982 · N2VB · Destroyed
  > The pilot reported that during flight, the engine stopped and the cockpit filled with smoke. He shut down fuel to the engine and started to glide toward an airport, but it was too FAR away. He then selected a field, but had to stay high on final approach to…
- [NTSB CHI83LA027](https://openairdocs.org/ntsb/CHI83LA027.md): Bell 47D1 · Georgetown, IN · Accident · Serious injuries · Limited investigation · Final report · Oct 28, 1982 · N929B · Substantial damage
  > The pilot started to takeoff from area that was difficult to exit. He relanded once. During the 2nd attempt to fly out, the helicopter collided with trees and crashed. The pilot was not rated in helicopters, but he said he had soloed.

Next page: https://openairdocs.org/ntsb.md?engine=27043&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 ('27043'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27043&status=final

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