# 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 2 of 8 · 390 cases

## Cases, newest first

- [NTSB ERA13LA433](https://openairdocs.org/ntsb/ERA13LA433.md): Enstrom F-28C · Bloomsburg, PA · Accident · 1 fatal · Limited investigation · Final report · Sep 27, 2013 · N631DP · Minor damage
  > The relieved pilot’s failure to maintain clearance from the rotating main rotor blades after he exited the helicopter.
- [NTSB CEN13LA431](https://openairdocs.org/ntsb/CEN13LA431.md): Schweizer 269C · Gary, SD · Accident · Minor injuries · Limited investigation · Final report · Jul 23, 2013 · N7507A · Substantial damage
  > The failure of the engine connecting rod due to fatigue.
- [NTSB ERA13LA300](https://openairdocs.org/ntsb/ERA13LA300.md): Sikorsky 269C · Lumberton, NJ · Accident · Minor injuries · Limited investigation · Final report · Jun 22, 2013 · N2091E · Substantial damage
  > The pilot's movement of the throttle to the idle detent at the beginning of a practice autorotation, which was contrary to procedures and resulted in the engine hesitating during the power recovery and a subsequent hard landing.
- [NTSB WPR13CA253](https://openairdocs.org/ntsb/WPR13CA253.md): Schweizer 300C · Hamilton, MT · Accident · No injuries · Data collection · Final report · May 1, 2013 · N322MH · Substantial damage
  > The student pilot’s failure to maintain helicopter control during a practice autorotation and the flight instructor's delayed remedial action.
- [NTSB CEN13CA238](https://openairdocs.org/ntsb/CEN13CA238.md): Enstrom F-28C · Lanesboro, IA · Accident · No injuries · Data collection · Final report · Apr 24, 2013 · N51767 · Substantial damage
  > The pilot’s failure to maintain control of the helicopter while making an off-airport landing with a gusty tailwind.
- [NTSB CEN13LA218](https://openairdocs.org/ntsb/CEN13LA218.md): Schweizer 269C-1 · Cleveland, OH · Accident · Minor injuries · Limited investigation · Final report · Mar 29, 2013 · N2065P · Substantial damage
  > The pilot’s improper flare with a high descent rate, which resulted in a hard landing.
- [NTSB WPR13LA167](https://openairdocs.org/ntsb/WPR13LA167.md): Enstrom F-28F · Twin Falls, ID · Accident · No injuries · Limited investigation · Final report · Mar 27, 2013 · N918DK · Substantial damage
  > A total loss of engine power 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 WPR13CA160](https://openairdocs.org/ntsb/WPR13CA160.md): Hughes 269C · Rialto, CA · Accident · No injuries · Data collection · Final report · Mar 25, 2013 · N90570 · Substantial damage
  > The student pilot’s failure to maintain helicopter control while maneuvering in a hover.
- [NTSB CEN13LA099](https://openairdocs.org/ntsb/CEN13LA099.md): Enstrom F-28C · Abilene, TX · Accident · No injuries · Limited investigation · Final report · Dec 7, 2012 · N574H · Substantial damage
  > The flight instructor's failure to conduct an autorotation following the loss of engine power due to fuel exhaustion. Contributing to the accident was the failure of the flight instructor and the student pilot to visually check fuel levels to ensure adequate…
- [NTSB CEN12LA648](https://openairdocs.org/ntsb/CEN12LA648.md): Hughes 269A · Mc Cool Junction, NE · Accident · No injuries · Limited investigation · Final report · Sep 19, 2012 · N37754 · Substantial damage
  > The flight instructor’s inadequate supervision of the student pilot’s entry into the autorotation, which resulted in a hard landing. Contributing to the accident was the loss of engine power as a result of the student pilot rapidly lowering the helicopter’s…
- [NTSB CEN12LA343](https://openairdocs.org/ntsb/CEN12LA343.md): Schweizer 269C · Denver, CO · Accident · No injuries · Limited investigation · Final report · Jun 2, 2012 · N2196F · Substantial damage
  > The inadequately overhauled landing gear dampers that allowed initiation of a ground resonance event from which the pilot was unable to recover. Contributing to the accident was the overhaul facility's failure to identify the overcharged dampers and a lack of…
- [NTSB ERA12LA368](https://openairdocs.org/ntsb/ERA12LA368.md): Schweizer 269C · Piney Flats, TN · Accident · No injuries · Limited investigation · Final report · May 24, 2012 · N760DA · Substantial damage
  > The mechanic’s improper maintenance of the main transmission aft pinion nut and belt drive system, which resulted in the uncoupling of the tail rotor driveshaft and the subsequent loss of helicopter control.
- [NTSB ERA12LA362](https://openairdocs.org/ntsb/ERA12LA362.md): Schweizer 269C · Asheville, NC · Accident · No injuries · Limited investigation · Final report · May 24, 2012 · N7505Y · Substantial damage
  > The use of an aftermarket skid shoe, which resulted in the skid shoe becoming caught on a runway centerline light during the run-on landing.
- [NTSB ERA12CA357](https://openairdocs.org/ntsb/ERA12CA357.md): Hughes TH-55 · Pittsfield, PA · Accident · No injuries · Data collection · Final report · May 19, 2012 · N74914 · Substantial damage
  > The student pilot's failure to maintain helicopter control during an encounter with loss of tail rotor effectiveness.
- [NTSB CEN12LA181](https://openairdocs.org/ntsb/CEN12LA181.md): Sikorsky 269C · Staples, TX · Accident · No injuries · Limited investigation · Final report · Mar 5, 2012 · N1099N · Substantial damage
  > The pilot's failure to attain the proper descent rate during autorotation, which resulted in a hard landing. Contributing to the accident were the inflight vibrations and loss of torque pedal response for undetermined reasons.
- [NTSB WPR12LA111](https://openairdocs.org/ntsb/WPR12LA111.md): Enstrom F28 · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Feb 20, 2012 · N51727 · Substantial damage
  > A total loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.
- [NTSB WPR12CA100](https://openairdocs.org/ntsb/WPR12CA100.md): Schweizer 269C · Las Vegas, NV · Accident · Minor injuries · Data collection · Final report · Feb 11, 2012 · N20536 · Substantial damage
  > The pilot's inadequate compensation for the known wind conditions during a hovering maneuver, which resulted in a loss of tail rotor effectiveness and directional control.
- [NTSB CEN12CA031](https://openairdocs.org/ntsb/CEN12CA031.md): Hughes 269A · Fort Worth, TX · Accident · No injuries · Data collection · Final report · Oct 14, 2011 · N10375 · Substantial damage
  > The inadvertent entry into ground resonance after a hovering autorotation.
- [NTSB WPR11LA462](https://openairdocs.org/ntsb/WPR11LA462.md): Hughes 269C · Ramona, CA · Accident · No injuries · Limited investigation · Final report · Sep 22, 2011 · N1088Y · Substantial damage
  > The flight instructor’s failure to follow the proper procedure while demonstrating a practice autorotation, which resulted in a total loss of engine power and subsequent hard landing.
- [NTSB ERA11LA428](https://openairdocs.org/ntsb/ERA11LA428.md): Schweizer 269C · Darlington, MD · Accident · Minor injuries · Limited investigation · Final report · Jul 29, 2011 · N39SH · Substantial damage
  > Inadequate maintenance of the helicopter's landing gear dampers, which resulted in a main rotor out-of-balance condition and ground resonance encounter.
- [NTSB WPR11LA325](https://openairdocs.org/ntsb/WPR11LA325.md): Hughes 269C · Wenatchee, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 2011 · N3623Z · Substantial damage
  > The pilot's failure to maintain control while hovering out of ground effect at low altitude, which resulted in the helicopter settling into trees.
- [NTSB CEN11CA442](https://openairdocs.org/ntsb/CEN11CA442.md): Schweizer 269C · Katy, TX · Accident · No injuries · Data collection · Final report · Jul 3, 2011 · N72DC · Substantial damage
  > The pilot's failure to maintain adequate rotor rpm during a low-altitude maneuvering flight.
- [NTSB CEN11LA414](https://openairdocs.org/ntsb/CEN11LA414.md): Enstrom F-28C-2 · Blair, NE · Accident · No injuries · Limited investigation · Final report · Jun 23, 2011 · N5694A · Substantial damage
  > The failure of a tail rotor pitch change link due to the retaining bolt becoming separated in flight. Contributing to the accident was the pilot’s inadequate preflight inspection.
- [NTSB CEN11LA397](https://openairdocs.org/ntsb/CEN11LA397.md): Schweizer 269C · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · Jun 15, 2011 · N2077E · Substantial damage
  > The student pilot's inadequate recovery from an autorotation and the CFI's delayed remedial action.
- [NTSB WPR11CA250](https://openairdocs.org/ntsb/WPR11CA250.md): Schweizer 269C · Las Vegas, NV · Accident · Serious injuries · Data collection · Final report · Jun 4, 2011 · N6128U · Substantial damage
  > The pilot's failure to maintain adequate clearance from terrain while attempting a transition from hovering flight to forward flight over a mesa in windy, downdraft conditions.
- [NTSB ERA11LA116](https://openairdocs.org/ntsb/ERA11LA116.md): Schweizer 269C-1 · Stuart, FL · Accident · No injuries · Limited investigation · Final report · Jan 15, 2011 · N21086 · Substantial damage
  > The student pilot's inadvertent activation of the collective control, which allowed the helicopter to become airborne and impact the ramp.
- [NTSB WPR10CA442](https://openairdocs.org/ntsb/WPR10CA442.md): Schweizer 269C · Caldwell, ID · Accident · No injuries · Data collection · Final report · Aug 31, 2010 · N1534C · Substantial damage
  > The failure of both pilots to maintain adequate main rotor RPM, the flight instructor's delayed remedial actions, and inadequate supervision of the flight.
- [NTSB ERA10CA432](https://openairdocs.org/ntsb/ERA10CA432.md): Schweizer 269C-1 · Titusville, FL · Accident · No injuries · Data collection · Final report · Aug 18, 2010 · N1542D · Substantial damage
  > The instructor's delayed remedial action, which resulted in a loss of rotor rpm and a hard landing.
- [NTSB ERA10CA399](https://openairdocs.org/ntsb/ERA10CA399.md): Schweizer 269C · Baldwin, FL · Accident · No injuries · Data collection · Final report · Aug 4, 2010 · N6143K · Substantial damage
  > A loss of tail rotor effectiveness during a hover.
- [NTSB CEN10CA390](https://openairdocs.org/ntsb/CEN10CA390.md): Schweizer 269C · Santa Rosa, NM · Accident · No injuries · Data collection · Final report · Jul 9, 2010 · N9421G · Substantial damage
  > The student pilot's failure to maintain control of the helicopter while landing in gusty surface winds conditions. Contributing to the accident was the flight instructor's inadequate monitoring of the flight.
- [NTSB ERA10CA134](https://openairdocs.org/ntsb/ERA10CA134.md): Enstrom F-28C · Fort Pierce, FL · Accident · No injuries · Data collection · Final report · Feb 6, 2010 · N426KA · Substantial damage
  > The pilot's inadvertent encounter with settling with power while hovering downwind.
- [NTSB ERA09CA349](https://openairdocs.org/ntsb/ERA09CA349.md): Schweizer 269C-1 · Titusville, FL · Accident · No injuries · Data collection · Final report · Jun 13, 2009 · N1565B · Substantial damage
  > The pilot's failure to maintain control of the helicopter during hover, resulting in a rollover.
- [NTSB WPR09LA213](https://openairdocs.org/ntsb/WPR09LA213.md): Schweizer 269C · Las Vegas, NV · Accident · No injuries · Limited investigation · Final report · Apr 22, 2009 · N17YS · Substantial damage
  > Loss of engine power during approach for undetermined reasons.
- [NTSB CEN09LA202](https://openairdocs.org/ntsb/CEN09LA202.md): Hughes 269C · El Indio, TX · Accident · Serious injuries · Limited investigation · Final report · Mar 11, 2009 · N64731 · Substantial damage
  > The pilot's failure to maintain control of the helicopter while attempting to land on a transport trailer in heavy rain and gusting winds.
- [NTSB CHI08CA267](https://openairdocs.org/ntsb/CHI08CA267.md): Hughes 269A · Bremen, OH · Accident · No injuries · Data collection · Final report · Aug 23, 2008 · N2256W · Substantial damage
  > The pilot's failure to maintain sufficient main rotor speed during the quick-stop maneuver. Contributing to the accident was the drainage ditch.
- [NTSB CHI08CA203](https://openairdocs.org/ntsb/CHI08CA203.md): Enstrom F28F · Amberg, WI · Accident · No injuries · Data collection · Final report · Jul 23, 2008 · N8626E · Substantial damage
  > The unsuitable terrain encountered by the pilot during a forced landing following a loss of engine power due to a cylinder head separation. Contributing to the accident was the tree.
- [NTSB LAX08LA196](https://openairdocs.org/ntsb/LAX08LA196.md): Schweizer 269C · Buffalo, WY · Accident · No injuries · Limited investigation · Final report · Jun 24, 2008 · N432MS · Substantial damage
  > The pilot's attempted downwind takeoff that resulted in an aborted takeoff. Contributing to the accident was the unsuitable terrain.
- [NTSB LAX08CA178](https://openairdocs.org/ntsb/LAX08CA178.md): Schweizer 269C · Cedar Valley, UT · Accident · Minor injuries · Data collection · Final report · Jun 13, 2008 · N54LC · Substantial damage
  > The pilot's failure to maintain terrain clearance while maneuvering. A contributing factor was the high density altitude.
- [NTSB NYC08CA195](https://openairdocs.org/ntsb/NYC08CA195.md): Schweizer 269C · Mt. Olive, AL · Accident · Minor injuries · Data collection · Final report · May 27, 2008 · N368HF · Substantial damage
  > The flight instructor's inadequate remedial action following an encounter with ground resonance.
- [NTSB DFW08CA114](https://openairdocs.org/ntsb/DFW08CA114.md): Hughes 269A · Killeen, TX · Accident · No injuries · Data collection · Final report · Apr 23, 2008 · N9064N · Substantial damage
  > The pilot's failure to maintain main rotor RPM and a safe rate of descent during the autorotation. A contributing factor was the gusty winds.
- [NTSB LAX08CA069](https://openairdocs.org/ntsb/LAX08CA069.md): Schweizer 269C · Las Vegas, NV · Accident · Minor injuries · Data collection · Final report · Feb 29, 2008 · N958CP · Substantial damage
  > The certificated flight instructor's delayed remedial action, and inadequate supervision while landing on a pinnacle. Factors contributing to the accident were the lack of suitable terrain for a forced landing, and the student's failure to maintain rotor rpm.
- [NTSB CHI08CA020](https://openairdocs.org/ntsb/CHI08CA020.md): Schweizer 269C · Hazelton, IN · Accident · Serious injuries · Data collection · Final report · Dec 5, 2007 · N75068 · Substantial damage
  > The pilot's failure to maintain adequate main rotor speed during the intentional autorotation, and his subsequent inability to reduce the descent rate prior to impact. A contributing factor was the intentional autorotation initiated by the pilot.
- [NTSB SEA08LA035](https://openairdocs.org/ntsb/SEA08LA035.md): Schweizer 269C · Newberg, OR · Accident · Serious injuries · Limited investigation · Final report · Nov 21, 2007 · N61480 · Substantial damage
  > The student pilot's inadvertent application of the fuel shut off valve during flight. Contributing to the accident were the locations of the heater and fuel shutoff controls.
- [NTSB SEA08FA022](https://openairdocs.org/ntsb/SEA08FA022.md): Hughes 269C · Baker City, OR · Accident · 1 fatal · Field investigation · Final report · Nov 8, 2007 · N381MC · Substantial damage
  > The pilot’s failure to maintain main rotor rpm while maneuvering.
- [NTSB LAX07CA267](https://openairdocs.org/ntsb/LAX07CA267.md): Hughes 269C · Ramona, CA · Accident · Minor injuries · Data collection · Final report · Sep 3, 2007 · N58332 · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB SEA07CA220](https://openairdocs.org/ntsb/SEA07CA220.md): Hughes 269C · Three Forks, MT · Accident · No injuries · Data collection · Final report · Jul 30, 2007 · N428MS · Substantial damage
  > The student pilot's failure to maintain control of the aircraft during autorotation. The flight instructor's inadequate supervision was a factor.
- [NTSB DFW07CA146](https://openairdocs.org/ntsb/DFW07CA146.md): Schweizer 269C · Slidell, LA · Accident · No injuries · Data collection · Final report · Jun 28, 2007 · N292B · Substantial damage
  > The pilot's encounter with settling with power condition while hovering out of ground effect. A contributing factor was the prevailing tailwind.
- [NTSB MIA07CA103](https://openairdocs.org/ntsb/MIA07CA103.md): Hughes 269A · Las Piedras, PR · Accident · Serious injuries · Data collection · Final report · May 29, 2007 · N63HD · Substantial damage
  > The failure of the non-certificated pilot to maintain a proper rate of descent during the autorotative landing following a reported loss of engine power for undetermined reasons, resulting in a hard landing.
- [NTSB LAX07LA106](https://openairdocs.org/ntsb/LAX07LA106.md): Enstrom F-28F · Monmouth, OR · Accident · No injuries · Limited investigation · Final report · Mar 6, 2007 · N785M · Substantial damage
  > The failure of the main drive belt tension assembly shaft due to high cycle, low stress fatigue.
- [NTSB DFW07LA061](https://openairdocs.org/ntsb/DFW07LA061.md): Hughes 269A · Fulshear, TX · Accident · Minor injuries · Limited investigation · Final report · Jan 27, 2007 · N8503A · Substantial damage
  > The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.

Next page: https://openairdocs.org/ntsb.md?engine=41524&page=3

## 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=2

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