# NTSB investigations: Dynamic rollover

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 4 · 163 cases

## Cases, newest first

- [NTSB CEN21LA135](https://openairdocs.org/ntsb/CEN21LA135.md): Bell OH-58 · Greensburg, LA · Accident · Minor injuries · Class 4 · Limited · Final report · Feb 22, 2021 · N902LP · Substantial damage
  > The pilot’s failure to maintain lateral control and terrain clearance while hovering, which resulted in a dynamic rollover.
- [NTSB CEN21LA124](https://openairdocs.org/ntsb/CEN21LA124.md): Hiller UH12C · Lafayette, IN · Accident · No injuries · Class 4 · Limited · Final report · Jan 12, 2021 · N552DR · Substantial damage
  > The pilot’s failure to maintain control of the helicopter shortly after liftoff into a hover, which resulted in a dynamic rollover when the left landing skid contacted the ground.
- [NTSB ERA21LA046](https://openairdocs.org/ntsb/ERA21LA046.md): Robinson R44 · Austell, GA · Accident · No injuries · Class 4 · Limited · Final report · Nov 18, 2020 · N442JP · Substantial damage
  > The flight instructor’s failure to maintain adequate clearance above the gravel surface in a hover, which resulted in a dynamic rollover.
- [NTSB CEN21LA081](https://openairdocs.org/ntsb/CEN21LA081.md): Schweizer 269C · Rhame, ND · Accident · No injuries · Class 4 · Limited · Final report · Nov 7, 2020 · N2081G · Substantial damage
  > The pilot landed the helicopter on unsuitable terrain, which resulted in a rollover.
- [NTSB CEN21LA021](https://openairdocs.org/ntsb/CEN21LA021.md): Robinson Helicopter R44 II · Washington, WI · Accident · No injuries · Class 4 · Limited · Final report · Oct 18, 2020 · N31136 · Substantial damage
  > The pilot’s failure to maintain lateral control during a hover and improper recovery action after the helicopter contacted the ground, which resulted in a dynamic rollover sequence and an impact with terrain.
- [NTSB CEN20CA180](https://openairdocs.org/ntsb/CEN20CA180.md): Rotorway Exec · Rochester, IN · Accident · Minor injuries · Class 4 · Data collection · Final report · May 16, 2020 · N311RM · Substantial damage
  > The pilot's failure to maintain control of the helicopter during lift off. Contributing to the accident was the pilot's lack of recent experience flying a helicopter.
- [NTSB CEN20CA090](https://openairdocs.org/ntsb/CEN20CA090.md): Robinson R22 · Cotulla, TX · Accident · No injuries · Data collection · Final report · Feb 18, 2020 · N10786 · Substantial damage
  > The pilot's failure to remove the right skid trailer tie-down before attempting to take off, which resulted in a dynamic roll-over.
- [NTSB WPR20CA059](https://openairdocs.org/ntsb/WPR20CA059.md): Sud SE 3130 Alouette II · Mokelumne Hills, CA · Accident · No injuries · Data collection · Final report · Jan 4, 2020 · N92785 · Substantial damage
  > The pilot's failure to maintain adequate clearance from terrain during a hover-taxi, which resulted in the helicopter's skid contacting grass and a subsequent dynamic roll-over.
- [NTSB CEN20LA037](https://openairdocs.org/ntsb/CEN20LA037.md): Robinson R22 · Beeville, TX · Accident · No injuries · Class 3 · Limited · Final report · Dec 19, 2019 · N695AP · Substantial damage
  > The solo student pilot's improper cyclic input during takeoff, which resulted in dynamic rollover.
- [NTSB GAA20CA060](https://openairdocs.org/ntsb/GAA20CA060.md): Robinson R22 · Smoketown, PA · Accident · No injuries · Data collection · Final report · Nov 4, 2019 · N8560A · Substantial damage
  > The student pilot's improper cyclic input while hovering and the flight instructor's delayed remedial action, which resulted in a dynamic rollover.
- [NTSB ERA20LA037](https://openairdocs.org/ntsb/ERA20LA037.md): Mosquito XE · Seffner, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 2, 2019 · UNREG · Substantial damage
  > The pilot's failure to maintain control of the helicopter while landing, which resulted in a hard landing and dynamic rollover. Contributing to the accident was the pilot's lack of helicopter experience.
- [NTSB GAA20CA035](https://openairdocs.org/ntsb/GAA20CA035.md): Robinson R22 · Overton, NV · Accident · No injuries · Data collection · Final report · Oct 17, 2019 · N4066S · Substantial damage
  > The pilot’s failure to maintain a proper approach and the flight instructor's subsequent failure to maintain an adequate climb rate during an attempted go-around in gusting tailwind conditions, which resulted in a hard landing and dynamic rollover.
- [NTSB ERA20LA004](https://openairdocs.org/ntsb/ERA20LA004.md): Bell OH 58A · Fort Meade, FL · Accident · No injuries · Class 3 · Limited · Final report · Oct 3, 2019 · N911RW · Substantial damage
  > The pilot's failure to maintain control of the helicopter, which resulted in a dynamic rollover and impact with terrain.
- [NTSB GAA20CA002](https://openairdocs.org/ntsb/GAA20CA002.md): Robinson R44 · Carlsbad, CA · Accident · No injuries · Data collection · Final report · Oct 2, 2019 · N4050X · Substantial damage
  > The student pilot's incorrect collective and cyclic applications during landing and the flight instructor's delayed remedial action, which resulted in a roll-over.
- [NTSB GAA19CA567](https://openairdocs.org/ntsb/GAA19CA567.md): George W. Felix Mosquito · Kershaw, SC · Accident · No injuries · Data collection · Final report · Sep 23, 2019 · N849GF · Substantial damage
  > The pilot's improper cyclic input during takeoff, which resulted in a loss of helicopter control, the skid impacting the ground, and a subsequent dynamic rollover.
- [NTSB GAA19CA519](https://openairdocs.org/ntsb/GAA19CA519.md): Bell 206 · San Diego, CA · Accident · No injuries · Data collection · Final report · Aug 27, 2019 · N218GH · Substantial damage
  > The pilot's failure to maintain yaw and pitch control while repositioning the helicopter, which resulted in dynamic rollover.
- [NTSB CEN19LA250](https://openairdocs.org/ntsb/CEN19LA250.md): Robinson Helicopter R44 II · Lyons, NE · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 3, 2019 · N440EM · Substantial damage
  > The engine's low cylinder compression, which resulted in low rotor rpm and a subsequent dynamic rollover following landing on soft terrain.
- [NTSB GAA19CA347](https://openairdocs.org/ntsb/GAA19CA347.md): Robinson R22 · San Antonio, TX · Accident · Minor injuries · Data collection · Final report · Jun 15, 2019 · N511HE · Substantial damage
  > The pilot receiving instruction's improper cyclic control input during landing, which resulted in a dynamic rollover, and the flight instructor's improper decision to practice landings in tall grass in gusting wind conditions.
- [NTSB GAA19CA279](https://openairdocs.org/ntsb/GAA19CA279.md): Guimbal Cabri · St. Louis, IL · Accident · No injuries · Data collection · Final report · May 23, 2019 · N369PA · Substantial damage
  > The flight instructor's improper emergency procedure instruction to the student pilot, which resulted in the student improperly using the throttle to correct the loss of yaw control, which resulted in ground impact and a dynamic rollover.
- [NTSB ERA19CA147](https://openairdocs.org/ntsb/ERA19CA147.md): Gaskins Safari 400 · Gallatin, TN · Accident · Minor injuries · Data collection · Final report · Apr 10, 2019 · N104CV · Substantial damage
  > The pilot/owner's improper decision to make a right turn instead of terminating the approach to a hover and his subsequent loss of helicopter control while attempting to land on sloping terrain, which resulted in a roll-over.
- [NTSB GAA19CA195](https://openairdocs.org/ntsb/GAA19CA195.md): Robinson R44 · Taunton, MA · Accident · No injuries · Data collection · Final report · Apr 2, 2019 · N344R · Substantial damage
  > The pilot's improper decision to land with a gusting left quartering tailwind and his subsequent attempt to reposition the helicopter and take off, which resulted in a dynamic rollover.
- [NTSB CEN19LA068](https://openairdocs.org/ntsb/CEN19LA068.md): Aerospatiale AS350 · Ponca City, OK · Accident · No injuries · Limited investigation · Final report · Jan 11, 2019 · N346AE · Substantial damage
  > The pilot's failure to maintain altitude during the hover operation while his view was obstructed due to the fogged-over windshield.
- [NTSB ERA19FA035](https://openairdocs.org/ntsb/ERA19FA035.md): Aerospatiale AS 355F2 · Beekmantown, NY · Accident · 2 fatal · Field investigation · Final report · Oct 30, 2018 · N372CA · Destroyed
  > The pilot's failure to keep the helicopter clear of a utility pole while hovering with a tailwind, which resulted in a dynamic rollover into active power lines.
- [NTSB GAA18CA483](https://openairdocs.org/ntsb/GAA18CA483.md): Robinson R22 · Ocean City, NJ · Accident · No injuries · Data collection · Final report · Aug 10, 2018 · N92TR · Substantial damage
  > The flight instructor's decision to conduct hover practice at a lower altitude than recommended and his delayed remedial action during recovery from an unstable hover, which resulted in a dynamic rollover.
- [NTSB CEN18LA306](https://openairdocs.org/ntsb/CEN18LA306.md): Bell 47G 3B · Custer, SD · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 2, 2018 · N347BH · Substantial damage
  > The pilot’s mismanagement of rotor RPM and subsequent forced landing on uneven terrain which led to a dynamic rollover.
- [NTSB GAA18CA450](https://openairdocs.org/ntsb/GAA18CA450.md): Robinson R44 · Lantana, FL · Accident · Minor injuries · Data collection · Final report · Jul 27, 2018 · N479AT · Substantial damage
  > The student pilot’s improper pitch control during landing, which resulted in a dynamic rollover.
- [NTSB ANC18CA056](https://openairdocs.org/ntsb/ANC18CA056.md): Eurocopter AS 350 B3 · Kobuk, AK · Accident · Minor injuries · Class 4 · Data collection · Final report · Jul 25, 2018 · N354LA · Substantial damage
  > The pilot's inadvertent dynamic rollover during takeoff.
- [NTSB ERA18LA170](https://openairdocs.org/ntsb/ERA18LA170.md): Bell OH 58A · Raleigh, NC · Accident · Minor injuries · Limited investigation · Final report · Jun 19, 2018 · N303HP · Substantial damage
  > The pilot's inadequate preflight inspection, during which he failed to detach ground handling equipment from the helicopter before initiating the takeoff, which resulted in the subsequent dynamic rollover.
- [NTSB GAA18CA159](https://openairdocs.org/ntsb/GAA18CA159.md): Hughes 269 · Jacksonville, FL · Accident · No injuries · Data collection · Final report · Mar 10, 2018 · N9020M · Substantial damage
  > The pilot’s failure to maintain rotor rpm during a practice autorotation, which resulted in ground contact and a dynamic rollover.
- [NTSB GAA18CA147](https://openairdocs.org/ntsb/GAA18CA147.md): Robinson Helicopter R44 · Talkeetna, AK · Accident · No injuries · Data collection · Final report · Feb 24, 2018 · N7519G · Substantial damage
  > The pilot’s selection of unsuitable terrain for landing, which resulted in a dynamic rollover.
- [NTSB GAA18CA089](https://openairdocs.org/ntsb/GAA18CA089.md): Robinson Helicopter R44 · Newark, OH · Accident · Minor injuries · Data collection · Final report · Dec 13, 2017 · N441ML · Substantial damage
  > The pilot’s failure to maintain lateral control of the helicopter during takeoff, which resulted in dynamic rollover.
- [NTSB WPR18LA004](https://openairdocs.org/ntsb/WPR18LA004.md): Western International Avia UH 1H · Arbuckle, CA · Accident · No injuries · Class 3 · Limited · Final report · Oct 13, 2017 · N247PV · Substantial damage
  > A collective control malfunction for reasons that could not be determined.
- [NTSB GAA17CA551](https://openairdocs.org/ntsb/GAA17CA551.md): Robinson Helicopter R22 · Santa Barbara, CA · Accident · No injuries · Data collection · Final report · Sep 24, 2017 · N177SR · Substantial damage
  > The student pilot’s unstabilized hover, which resulted in ground contact and a dynamic rollover. Contributing to the accident was the flight instructor’s delayed remedial action.
- [NTSB GAA17CA509](https://openairdocs.org/ntsb/GAA17CA509.md): Robinson Helicopter R22 · Bremerton, WA · Accident · No injuries · Data collection · Final report · Aug 24, 2017 · N7198J · Substantial damage
  > The student pilot’s improper bank control during takeoff, which resulted in a dynamic rollover.
- [NTSB CEN17RA377](https://openairdocs.org/ntsb/CEN17RA377.md): Mcdonnell Douglas MD900 · Heiligenblut, Austria · Accident · Minor injuries · Foreign investigation · Aug 1, 2017 · OE-XWF · Substantial damage
  > On August 1, 2017, at 1815 UTC, a McDonnell Douglas MD 900 Helicopter, Austrian registration OE-XWF, impacted mountainous terrain about 8 miles west-northwest of Heiligenblut, Austria. One medical crewmember sustained minor injuries. The pilot, the other…
- [NTSB GAA17CA383](https://openairdocs.org/ntsb/GAA17CA383.md): Robinson Helicopter R44 · Easton, PA · Accident · No injuries · Data collection · Final report · Jul 4, 2017 · N3025J · Substantial damage
  > The pilot’s distraction during liftoff due to the tail rotor chip warning light illuminating, which resulted in the helicopter drifting right, the skid touching down, and a dynamic roll-over.
- [NTSB GAA17CA296](https://openairdocs.org/ntsb/GAA17CA296.md): Schweizer 269C · Eden Prairie, MN · Accident · Minor injuries · Data collection · Final report · May 22, 2017 · N2032S · Substantial damage
  > The student pilot's loss of lateral control while practicing autorotations from a hover and the flight instructor's delayed remedial action, which resulted in a bounced landing and dynamic roll-over.
- [NTSB ERA17CA187](https://openairdocs.org/ntsb/ERA17CA187.md): Robinson R22 · Linden, NJ · Accident · No injuries · Data collection · Final report · May 20, 2017 · N2322Z · Substantial damage
  > The flight instructor's failure to maintain helicopter control while hovering, which resulted in skid contact with the ground and a dynamic roll-over.
- [NTSB GAA17CA251](https://openairdocs.org/ntsb/GAA17CA251.md): Bender Joseph KIT Rotoway · Wheatland, WY · Accident · No injuries · Data collection · Final report · Apr 30, 2017 · N164JB · Substantial damage
  > The pilot's decision to operate the helicopter in gusting wind and high-density altitude conditions and his positioning of the helicopter such that it resulted in a right quartering tailwind, which resulted in a loss of helicopter control due to a loss of…
- [NTSB ERA17LA103](https://openairdocs.org/ntsb/ERA17LA103.md): Eurocopter Deutschland EC 135 · Beattyville, KY · Accident · No injuries · Limited investigation · Final report · Feb 7, 2017 · N135LG · Substantial damage
  > The pilot's failure to maintain helicopter control while landing, which resulted in a hard landing and subsequent roll over.
- [NTSB GAA17CA132](https://openairdocs.org/ntsb/GAA17CA132.md): Bell Helicopter Textron 206 · Carson City, NV · Accident · Minor injuries · Data collection · Final report · Feb 2, 2017 · N519EH · Substantial damage
  > The pilot-in-command’s delayed remedial action to arrest the right yaw after the bounced landing while operating in a flight regime conducive to the loss of tail rotor effectiveness, which resulted in a roll-over.
- [NTSB GAA17CA130](https://openairdocs.org/ntsb/GAA17CA130.md): Robinson Helicopter R22 · Armstrong, TX · Accident · No injuries · Data collection · Final report · Jan 31, 2017 · N883KC · Substantial damage
  > The pilot’s failure to remove the left helicopter skid tie-down before takeoff, which resulted in dynamic roll-over.
- [NTSB GAA17CA092](https://openairdocs.org/ntsb/GAA17CA092.md): Pitcairn PA 18 · Philadelphia, PA · Accident · No injuries · Data collection · Final report · Nov 18, 2016 · N12680 · Substantial damage
  > The pilot’s failure to correct the gyroplane’s right roll during the landing, which resulted in the exceedance of its critical angle and a subsequent roll-over. Contributing to the accident were the pilot’s focus on preventing a potential ground loop instead…
- [NTSB WPR17LA019](https://openairdocs.org/ntsb/WPR17LA019.md): Bell 206B · Yuma, AZ · Accident · Serious injuries · Limited investigation · Final report · Nov 11, 2016 · N914HH · Substantial damage
  > The pilot’s inability to maintain helicopter control after its skid got caught on the landing pad while he was maneuvering the helicopter to land on it, which resulted in a dynamic roll-over.
- [NTSB CEN16LA182](https://openairdocs.org/ntsb/CEN16LA182.md): Bell 47G 3B 1 · Portia, AR · Accident · 1 fatal · Limited investigation · Final report · May 13, 2016 · N48316 · Substantial damage
  > The pilot's decision to perform a sliding takeoff from the elevated platform, which resulted in a dynamic rollover when the right skid plate caught on a protruding screw. Contributing to the accident was the pilot's failure to adequately inspect the landing…
- [NTSB GAA16CA163](https://openairdocs.org/ntsb/GAA16CA163.md): Enstrom F280 · Sodus, NY · Accident · No injuries · Data collection · Final report · Mar 26, 2016 · N5698Y · Substantial damage
  > The pilot's improper collective application at touchdown during a practice run-on landing, which resulted in the main rotor system impacting the tailboom and the forward portion of the fuselage impacting terrain during remedial action by the flight…
- [NTSB WPR16LA069](https://openairdocs.org/ntsb/WPR16LA069.md): Bell 47G 3B 1 · Carson City, NV · Accident · Minor injuries · Limited investigation · Final report · Feb 13, 2016 · N1181W · Substantial damage
  > The pilot's failure to maintain sufficient main rotor rpm, which resulted in a loss of helicopter control and a dynamic rollover.
- [NTSB ERA16LA104](https://openairdocs.org/ntsb/ERA16LA104.md): Bell 206 · Linden, NJ · Accident · Serious injuries · Limited investigation · Final report · Feb 6, 2016 · N206R · Substantial damage
  > The pilot receiving instruction's failure to maintain helicopter control during the initial takeoff, which resulted in a dynamic rollover. Contributing to the accident was the flight instructor's inadequate remedial action due to his distraction by looking…
- [NTSB CEN16LA096](https://openairdocs.org/ntsb/CEN16LA096.md): Raymond Z Brown Condor · Centralia, IL · Accident · 1 fatal · Limited investigation · Final report · Feb 1, 2016 · N41852 · Substantial damage
  > The failure of the prerotator belt, which impeded the engine's timing belt and resulted in a loss of engine power at low altitude.
- [NTSB ERA16CA102](https://openairdocs.org/ntsb/ERA16CA102.md): Tucker Mitchel C H 13 · Zephyrhills, FL · Accident · No injuries · Data collection · Final report · Jan 17, 2016 · N9669 · Substantial damage
  > The pilot's failure to maintain aircraft control while on ground standing with the engine running during high crosswind conditions which resulted in a static rollover and collision with the ground.

Next page: https://openairdocs.org/ntsb-events/231/sequence.md?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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '231' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/231/sequence?page=2

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