# NTSB investigations: Lycoming HIO-360 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 5 of 8 · 390 cases

## Cases, newest first

- [NTSB SEA98LA021](https://openairdocs.org/ntsb/SEA98LA021.md): Enstrom F-28F · John Day, OR · Accident · No injuries · Limited investigation · Final report · Dec 6, 1997 · N171HH · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB NYC98LA025](https://openairdocs.org/ntsb/NYC98LA025.md): Hughes 269B · Cleveland, OH · Accident · No injuries · Limited investigation · Final report · Oct 31, 1997 · N2273W · Substantial damage
  > the pilot's failure to recover from settling-with-power. Factors relating to the accident were: the pilot's downwind approach and low airspeed.
- [NTSB NYC98FA018](https://openairdocs.org/ntsb/NYC98FA018.md): Enstrom F-28C · Fairview, PA · Accident · No injuries · Field investigation · Final report · Oct 24, 1997 · N1944J · Substantial damage
  > inadequate maintenance, which led to detonation and a melted piston, and subsequent power loss.
- [NTSB CHI98LA021](https://openairdocs.org/ntsb/CHI98LA021.md): Schweizer 269C · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · Oct 15, 1997 · N557DC · Substantial damage
  > the pilot's inadequate preflight planning which resulted in a low fuel state, and his inability to see the wire which the helicopter contacted. Factors associated to the accident were the precautionary landing, the dark night conditions, and the wire which…
- [NTSB ATL97LA114](https://openairdocs.org/ntsb/ATL97LA114.md): Hughes 269A · Dandridge, TN · Accident · No injuries · Limited investigation · Final report · Aug 10, 1997 · N7050D · Substantial damage
  > the pilot's failure to properly plan the approach for landing, which led to a loss of tail rotor authority and directional control, while close to the ground. The tailwind was a related factor.
- [NTSB LAX97LA224](https://openairdocs.org/ntsb/LAX97LA224.md): Enstrom F-28-F · Riverside, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 25, 1997 · N99YC · Substantial damage
  > failure by unknown maintenance personnel to retorque the nuts on the retainer cover.
- [NTSB ATL97LA067](https://openairdocs.org/ntsb/ATL97LA067.md): Hughes 269A · Lake Wales, FL · Accident · No injuries · Limited investigation · Final report · May 1, 1997 · N37754 · Substantial damage
  > loss of engine power for undetermined reason(s); and the flight instructor's improper flare and improper use of the flight controls, while flaring for an autorotative landing.
- [NTSB CHI97LA118](https://openairdocs.org/ntsb/CHI97LA118.md): Hughes 269A · Council Bluffs, IA · Accident · No injuries · Limited investigation · Final report · Apr 27, 1997 · N1040S · Substantial damage
  > failure of the student pilot to maintain directional control, inadequate supervision by the flight instructor (CFI), and subsequent failure of the pilot(s) to properly flare the helicopter during a hover autorotation.
- [NTSB MIA97LA103](https://openairdocs.org/ntsb/MIA97LA103.md): Hughes TH-55 · Cullman, AL · Accident · Serious injuries · Limited investigation · Final report · Mar 28, 1997 · N818D · Substantial damage
  > a loss of engine power for undetermined reasons and the pilot-in-command's failure to maintain control of the helicopter. Factors in this accident were: an improper autorotation as a result of improper collective use and resulting failure to maintain main…
- [NTSB IAD97GA054](https://openairdocs.org/ntsb/IAD97GA054.md): Schweizer 269C · Cleveland, OH · Accident · No injuries · Final report · Mar 20, 1997 · N892CP · Substantial damage
  > The engine failure from the rod cap bolt being sheared and the separation of the number two cylinder separating from the crankcase.
- [NTSB MIA97LA084](https://openairdocs.org/ntsb/MIA97LA084.md): Hughes 269A · Homosassa, FL · Accident · No injuries · Limited investigation · Final report · Feb 7, 1997 · N9061R · Substantial damage
  > the unqualified person's poor judgment, by taking the helicopter without the owner's permission and attempting an unauthorized flight at night; and his failure (or inability) to maintain control the helicopter. Darkness was a related factor.
- [NTSB SEA97FA003](https://openairdocs.org/ntsb/SEA97FA003.md): Enstrom F-28C · Spokane, WA · Accident · No injuries · Field investigation · Final report · Oct 5, 1996 · N574H · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB FTW96LA244](https://openairdocs.org/ntsb/FTW96LA244.md): Hughes 269 · Dallas, TX · Accident · No injuries · Limited investigation · Final report · Jun 8, 1996 · N269A · Substantial damage
  > The student pilot's encounter with dynamic rollover while hovering. Factors were the prevailing high winds and the inadequate supervision provided by the flight instructor.
- [NTSB FTW96LA174](https://openairdocs.org/ntsb/FTW96LA174.md): Schweizer 269C · Silver, TX · Accident · No injuries · Limited investigation · Final report · Apr 18, 1996 · N430CK · Substantial damage
  > the pilot's failure to maintain adequate rotor RPM.
- [NTSB MIA96LA106](https://openairdocs.org/ntsb/MIA96LA106.md): Enstrom F-28C · Defuniak Spring, FL · Accident · Minor injuries · Limited investigation · Final report · Mar 26, 1996 · N56874 · Destroyed
  > The pilot's inadvertent flight into instrument meteorological conditions, and inadvertent descent, due to spatial disorientation, which resulted in a collision with trees. Factors relating to the accident were: the adverse weather conditions and the pilot's…
- [NTSB ATL96LA063](https://openairdocs.org/ntsb/ATL96LA063.md): Cessna 172RG · Gulf Shores, AL · Accident · No injuries · Limited investigation · Final report · Mar 10, 1996 · N6612V · 2 aircraft · Substantial damage
  > The failure of both pilots to maintain an adequate visual lookout. A factor was the lack of position reports via radio by the pilot of the helicopter.
- [NTSB FTW96LA095](https://openairdocs.org/ntsb/FTW96LA095.md): Schweizer 269C · San Ygnacio, TX · Accident · No injuries · Limited investigation · Final report · Jan 12, 1996 · N3623T · Substantial damage
  > Failure of the rotor drive system clutch assembly (separation of the swedge ball from the end of the clutch control cable), which resulted in disengagement of the rotor drive system, while the helicopter was in lateral movement at low altitude.
- [NTSB BFO96LA003](https://openairdocs.org/ntsb/BFO96LA003.md): Enstrom F28-280C · Blue Ash, OH · Accident · No injuries · Limited investigation · Final report · Oct 6, 1995 · N51786 · Substantial damage
  > the commercial pilot's failure to maintain clearance from obstacles during hover-taxi operations. Related factors the tailwind, the nearby obstacle, and the misjudged maneuver to avoid obstacles.
- [NTSB LAX95LA332](https://openairdocs.org/ntsb/LAX95LA332.md): Enstrom F-28C · Livermore, CA · Accident · 1 fatal · Limited investigation · Final report · Sep 10, 1995 · N5689T · Destroyed
  > the pilot's inadequate preflight fuel load determination procedures which resulted in fuel exhaustion. In addition, the pilot's delayed and improper use of the collective and cyclic flight controls following the engine failure led to his failure to maintain…
- [NTSB LAX95LA271](https://openairdocs.org/ntsb/LAX95LA271.md): Hughes 269C · Redlands, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 27, 1995 · N747MK · Substantial damage
  > The company's maintenance personnel improper servicing of the landing skid actuators.
- [NTSB LAX95LA188](https://openairdocs.org/ntsb/LAX95LA188.md): Schweizer 269C · Scottsdale, AZ · Accident · No injuries · Limited investigation · Final report · May 12, 1995 · N6120A · Substantial damage
  > The CFI's failure to apply adequate power during the flare which was a result of not maintaining the required engine and rotor rpm.
- [NTSB FTW95LA039](https://openairdocs.org/ntsb/FTW95LA039.md): Hughes 269A · Monticello, AR · Accident · No injuries · Limited investigation · Final report · Nov 8, 1994 · N10415 · Substantial damage
  > The loss of engine power due to a fatigued rod end bolt. A factor was the lack of suitable terrain for landing.
- [NTSB CHI94LA316](https://openairdocs.org/ntsb/CHI94LA316.md): Schweizer 269C · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · Sep 7, 1994 · N61245 · Substantial damage
  > the pilot-in-command's (CFI) delayed recovery from a practice autorotation. A factor associated with the accident was the student pilot's improper autorotation.
- [NTSB ANC94LA132](https://openairdocs.org/ntsb/ANC94LA132.md): James Chisum CHISUM-SCRAPS · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Sep 7, 1994 · N1771C · Substantial damage
  > The failure of the pilot to maintain directional control of the airplane. Factors in the accident were the soft terrain and inadequate remedial action.
- [NTSB FTW94LA253](https://openairdocs.org/ntsb/FTW94LA253.md): Hughes 269A · Leander, LA · Accident · No injuries · Limited investigation · Final report · Aug 1, 1994 · N9062G · Substantial damage
  > Inadequate maintenance and a fatigue failure of a #1 cylinder connecting rod bolt. A factor was the lack of suitable terrain available to the pilot for a forced landing.
- [NTSB SEA94LA153](https://openairdocs.org/ntsb/SEA94LA153.md): Schweizer 269C · Hillsboro, OR · Accident · No injuries · Limited investigation · Final report · Jun 21, 1994 · N7506A · Substantial damage
  > The improper servicing of the skid shock struts.
- [NTSB FTW94GA204](https://openairdocs.org/ntsb/FTW94GA204.md): Hughes 269C · London, TX · Accident · Minor injuries · Final report · Jun 20, 1994 · N7404F · Destroyed
  > The partial power loss due to a sticking valve. Factors were the remaining worn lobes on the camshaft and the lack of suitable terrain onto which a successful forced landing could be executed.
- [NTSB ATL94LA100](https://openairdocs.org/ntsb/ATL94LA100.md): Schweizer 269C · Hiram, GA · Accident · Serious injuries · Limited investigation · Final report · May 16, 1994 · N160CA · Substantial damage
  > The inadvertent flight from VMC conditions to IMC conditions by the pilot. A factor in the accident was the ground fog in the area.
- [NTSB ATL94LA095](https://openairdocs.org/ntsb/ATL94LA095.md): Schweizer 300C · Randleman, NC · Accident · Serious injuries · Limited investigation · Final report · May 9, 1994 · N220MS · Substantial damage
  > The pilot's failure to adequately preflight the helicopter which resulted in a complete loss of engine power. A factor was water in the fuel supply.
- [NTSB CHI94LA138](https://openairdocs.org/ntsb/CHI94LA138.md): Schweizer 269C · Fargo, ND · Accident · Minor injuries · Limited investigation · Final report · Apr 21, 1994 · N3623Y · Substantial damage
  > the pilot in command's improper autorotation technique. A factor associated with the accident is the FAA Inspector's delayed remedial action.
- [NTSB LAX94LA201](https://openairdocs.org/ntsb/LAX94LA201.md): Schweizer 300C · Pacific Ocean (Pacific Ocean) · Accident · No injuries · Limited investigation · Final report · Apr 10, 1994 · N60718 · Substantial damage
  > The low altitude of the aircraft when the engine lost power and the pilot's misjudgement of the flare point during the autorotation. Factors in the accident were the loss of engine power and the sunglare.
- [NTSB CHI94LA013](https://openairdocs.org/ntsb/CHI94LA013.md): Hughes 269A · Coldwater, MI · Accident · No injuries · Limited investigation · Final report · Oct 12, 1993 · N7032U · Substantial damage
  > the fatigue failure of the tailboom support strut attachment lug.
- [NTSB MIA94LA002](https://openairdocs.org/ntsb/MIA94LA002.md): Schweizer 269C · Opa-Locka, FL · Accident · No injuries · Limited investigation · Final report · Oct 6, 1993 · N95AF · Substantial damage
  > Improper servicing of three of the four main landing gear dampers by company maintenance personnel, and innadequate remedial action by the pilot as ground resonance began.
- [NTSB ATL94LA002](https://openairdocs.org/ntsb/ATL94LA002.md): Hughes 269B · Linville, NC · Accident · No injuries · Limited investigation · Final report · Oct 5, 1993 · N9333F · Substantial damage
  > The pilot's failure to maintain airspeed that would have avoided a loss of tail rotor effectiveness (lte), and his improper compensation for tailwind condition. A factor was the lack of information in the pilot's operating handbook regarding the conditions…
- [NTSB SEA93FA178](https://openairdocs.org/ntsb/SEA93FA178.md): Enstrom F-28C · Seattle, WA · Accident · No injuries · Field investigation · Final report · Aug 18, 1993 · N86198 · Substantial damage
  > Shorted magneto condensers. Factors include a hidden obstruction in the landing area, and a reduction in rotor RPM from attempting to avoid the obstruction.
- [NTSB MIA93LA177](https://openairdocs.org/ntsb/MIA93LA177.md): Schweizer 269C · Punta Gorda, FL · Accident · No injuries · Limited investigation · Final report · Aug 18, 1993 · N95AF · Substantial damage
  > The pilot-in-command's improper use of the flight controls (cyclic and collective pitch) during a simulated autorotation with turn, resulting in an in flight collision with terrain with the tail skid and tailrotor blades.
- [NTSB NYC93GA151](https://openairdocs.org/ntsb/NYC93GA151.md): Enstrom F-28C · Gallipolis, OH · Accident · Serious injuries · Final report · Aug 12, 1993 · N51786 · Substantial damage
  > The pilot's improper use of the collective and throttle which resulted in a low rotor rpm condition and a loss of control, and an inflight collision with the terrain.
- [NTSB DEN93LA070](https://openairdocs.org/ntsb/DEN93LA070.md): Enstrom F-28C · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Jun 27, 1993 · N625H · Substantial damage
  > A failure by the pilot flying to adequately compensate for wind conditions which led to a loss of tail rotor control. A factor was: inadequate supervision by the pilot in command.
- [NTSB LAX93FA260](https://openairdocs.org/ntsb/LAX93FA260.md): Hughes 269A · Henderson, NV · Accident · 1 fatal · Field investigation · Final report · Jun 19, 1993 · N9048R · Destroyed
  > the pilot's improper use of the collective control and his failure to maintain adequate RPM during an autorotative descent during a practice power off landing. A factor which contributed to the accident related to the pilot's lack of recent experience…
- [NTSB NYC93FA115](https://openairdocs.org/ntsb/NYC93FA115.md): Enstrom F28C · Gordon, KY · Accident · 1 fatal · Field investigation · Final report · Jun 17, 1993 · N200NH · Destroyed
  > The pilot's failure to see and avoid the wire.
- [NTSB CHI93LA208](https://openairdocs.org/ntsb/CHI93LA208.md): Hughes 269 · Valley City, ND · Accident · No injuries · Limited investigation · Final report · Jun 15, 1993 · N213MS · Substantial damage
  > the pilot-in-command's failure to maintain clearance from a tree during an aerial application manuever.
- [NTSB CHI93DEE01](https://openairdocs.org/ntsb/CHI93DEE01.md): Mark Streitz Skybolt · Joliet, IL · Accident · No injuries · Final report · Jun 5, 1993 · N94MS · Substantial damage
  > the failure of the number two connecting rod bolt.
- [NTSB LAX93LA227](https://openairdocs.org/ntsb/LAX93LA227.md): Hughes 269C · Van Nuys, CA · Accident · No injuries · Limited investigation · Final report · May 26, 1993 · N58407 · Substantial damage
  > the student pilot's failure to maintain the altitude while maneuvering toward the parking area. The student pilot's lack of total experience was a factor in this accident.
- [NTSB MIA93LA061](https://openairdocs.org/ntsb/MIA93LA061.md): Hughes 269A · Jacksonville, FL · Accident · No injuries · Limited investigation · Final report · Feb 4, 1993 · N711CH · Substantial damage
  > The failure of the pilot-in-command to monitor fuel quantity due to inattentiveness. Contributing to the accident was the improper use of the collective flight control during the soft field autorotation.
- [NTSB BFO93FA019](https://openairdocs.org/ntsb/BFO93FA019.md): Hughes 269C · Tonawanda, NY · Accident · 2 fatal · Field investigation · Final report · Jan 11, 1993 · N1088Z · Destroyed
  > Improper inflight planning/decision by the pilot and his failure to maintain clearance from an obstacle during flight. Factors related to the accident include poor visibility and weather conditions at dusk, and the pilot's excessive airspeed for the…
- [NTSB LAX93LA087](https://openairdocs.org/ntsb/LAX93LA087.md): Hughes 269C · Folsom, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 2, 1993 · N7462F · Destroyed
  > The pilot failing to maintain an adequate visual lookout resulting in the helicopter colliding with electrical transmission wires.
- [NTSB LAX92LA383](https://openairdocs.org/ntsb/LAX92LA383.md): Hughes 269C · Rialto, CA · Accident · No injuries · Limited investigation · Final report · Sep 12, 1992 · N58164 · Substantial damage
  > The pilot/passenger's failure to maintain adequate rotor RPM and the pilot-in-command's inadequate supervision of the flight.
- [NTSB LAX92LA333](https://openairdocs.org/ntsb/LAX92LA333.md): Schweizer 269C · Pacific Ocean (Pacific Ocean) · Accident · No injuries · Limited investigation · Final report · Aug 5, 1992 · N36225 · Substantial damage
  > The pilot's inadequate preflight inspection by failing to untie the front skid tiedown rope.
- [NTSB CHI92LA222](https://openairdocs.org/ntsb/CHI92LA222.md): Hughes 269C · Aurora, IL · Accident · No injuries · Limited investigation · Final report · Aug 1, 1992 · N58335 · Substantial damage
  > Fatigue fracture of the engine crankshaft resulting in loss of power. Factors were the pilot's excessive descent and his lack of total experience.
- [NTSB DEN92LA001](https://openairdocs.org/ntsb/DEN92LA001.md): Enstrom F-28C · Evergreen, CO · Accident · No injuries · Limited investigation · Final report · Oct 2, 1991 · N552H · Substantial damage
  > In flight encounter with a sudden downdraft. A factor was: the pilot's lack of total experience in aircraft type.

Next page: https://openairdocs.org/ntsb.md?engine=41524&page=6

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41524&page=5

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