# Roll over

- Type: NTSB defining event
- NTSB code: 097
- CICTT category: Abnormal Runway Contact
- Defining event in: 37 cases
- In the sequence of: 261 cases
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-events/097/cases.md
- Cases with it anywhere in the sequence: https://openairdocs.org/ntsb-events/097/sequence.md
- Page: https://openairdocs.org/ntsb-events/097

## Cases per year (defining / in the sequence)

- 2008: 1 / 20
- 2009: 2 / 15
- 2010: 2 / 14
- 2011: 2 / 13
- 2012: 1 / 18
- 2013: 4 / 12
- 2014: 3 / 19
- 2015: 2 / 19
- 2016: 1 / 13
- 2017: 3 / 17
- 2018: 1 / 34
- 2019: 2 / 20
- 2020: 1 / 7
- 2021: 4 / 8
- 2022: 1 / 4
- 2023: 1 / 8
- 2024: 2 / 6
- 2025: 2 / 6
- 2026: 2 / 8

## Phase of flight

- Landing: 12 cases
- Takeoff: 11 cases
- Landing-flare/touchdown: 8 cases
- Landing-landing roll: 2 cases
- Taxi-from runway: 2 cases
- Taxi: 2 cases

## In the probable cause of these cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 15 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 6 cases
- [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000) (Aircraft): 6 cases
- [Wet/muddy terrain](https://openairdocs.org/ntsb-findings/03021035) (Environmental issues): 3 cases
- [Directional control](https://openairdocs.org/ntsb-findings/01062020) (Aircraft): 3 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 2 cases
- [Delayed action](https://openairdocs.org/ntsb-findings/02041025) (Personnel issues): 2 cases
- [Snow](https://openairdocs.org/ntsb-findings/03035045) (Environmental issues): 1 cases
- [Gusts](https://openairdocs.org/ntsb-findings/03034045) (Environmental issues): 1 cases
- [Crosswind](https://openairdocs.org/ntsb-findings/03034040) (Environmental issues): 1 cases

## Aircraft models (registry)

- [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 5 cases
- [Robinson Helicopter R44](https://openairdocs.org/model/robinson-helicopter-r44): 3 cases
- [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta): 2 cases
- [Cessna 172P](https://openairdocs.org/model/cessna-172p): 2 cases
- [Bell 206B](https://openairdocs.org/model/bell-206b): 2 cases
- [Robinson Helicopter R66](https://openairdocs.org/model/robinson-helicopter-r66): 1 cases
- [Piper PA-11](https://openairdocs.org/model/piper-pa-11): 1 cases
- [Piper J3C-65](https://openairdocs.org/model/piper-j3c-65): 1 cases
- [Enstrom Helicopter 480](https://openairdocs.org/model/enstrom-helicopter-480): 1 cases
- [Mcdonnell Douglas Helicopter 369E](https://openairdocs.org/model/mcdonnell-douglas-helicopter-369e): 1 cases

## Newest cases

- [NTSB CEN27LA026](https://openairdocs.org/ntsb/CEN27LA026), Oct 17, 2026: Piper J3C-65 (N3368N), Eagle Harbor, MI, investigation ongoing
- [NTSB CEN26LA119](https://openairdocs.org/ntsb/CEN26LA119), Feb 19, 2026: Robinson Helicopter R66 (N940BH), Graford, TX, substantial damage. Probable cause: The pilot’s failure to maintain sufficient rotor speed during a practice autorotation to soft terrain which resulted in a loss of control and roll over.
- [NTSB ANC25LA034](https://openairdocs.org/ntsb/ANC25LA034), Apr 12, 2025: Cessna 182B (N916GG), Girdwood, AK, substantial damage. Probable cause: The pilot's decision to land on an unsuitable landing surface, which resulted in a nose-over.
- [NTSB ENG25WA033](https://openairdocs.org/ntsb/ENG25WA033), Apr 10, 2025: Bell 505 (HB-ZWF), Petersgrat Mountain, Switzerland, destroyed
- [NTSB GAA25WA019](https://openairdocs.org/ntsb/GAA25WA019), Oct 26, 2024: Viking Air DHC-2 MK 1 (VH-OHU), Whitehaven, Australia, substantial damage
- [NTSB ERA24LA236](https://openairdocs.org/ntsb/ERA24LA236), Jun 2, 2024: Robinson R44 (N220SW), Gilbertsville, KY, substantial damage. Probable cause: The pilot's failure to maintain control of the helicopter while attempting to take off from sloping terrain.
- [NTSB WPR23LA147](https://openairdocs.org/ntsb/WPR23LA147), Apr 8, 2023: Robinson Helicopter R22 Beta (N7530D), Midway, UT, substantial damage. Probable cause: The pilot’s failure to maintain aircraft control during a pinnacle landing that resulted in a hard landing and subsequent roll over.
- [NTSB ERA23LA021](https://openairdocs.org/ntsb/ERA23LA021), Oct 14, 2022: Robinson Helicopter R44 (N306MB), Daytona Beach, FL, substantial damage. Probable cause: The pilot’s misjudged landing point which resulted in a loss of control and collision with terrain.
- [NTSB ANC21LA083](https://openairdocs.org/ntsb/ANC21LA083), Sep 7, 2021: Mcdonnell Douglas Helicopter 369E (N125KW), Delta Junction, AK, substantial damage. Probable cause: The pilot’s inability to maintain lateral control during the takeoff, which resulted in dynamic rollover. Contributing to the accident was the pilot’s decision to utilize an unsuitable landing area…
- [NTSB ANC21LA080](https://openairdocs.org/ntsb/ANC21LA080), Aug 31, 2021: Robinson Helicopter R44 II (N779DZ), Pelican, AK, substantial damage. Probable cause: The pilot’s loss of control while landing on a remote helipad.

NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted.

Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1).

NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names.

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