# Rotorcraft flight control, general

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft propeller/rotor](https://openairdocs.org/ntsb-findings/0104) › [Rotorcraft flight control](https://openairdocs.org/ntsb-findings/010467) › Rotorcraft flight control, general
- NTSB code: 01046700
- Cases: 9
- In the probable cause: 8
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01046700/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01046700/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01046700

## Cases per year (in the probable cause / all)

- 2008: 5 / 5
- 2012: 1 / 1
- 2013: 0 / 1
- 2016: 1 / 1
- 2022: 1 / 1

## Defining events in these cases

- [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 2 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 2 cases
- [Dynamic rollover](https://openairdocs.org/ntsb-events/231): 2 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases
- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 1 cases
- [Hard landing](https://openairdocs.org/ntsb-events/092): 1 cases

## Aircraft models (registry)

- [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 1 cases
- [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta): 1 cases
- [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22): 1 cases
- [Hughes OH-6A](https://openairdocs.org/model/hughes-oh-6a): 1 cases
- [Richards Heavylift Helo UH-1B](https://openairdocs.org/model/richards-heavylift-helo-uh-1b): 1 cases
- [Randall Amanda ROTORWAY EXEC 162F](https://openairdocs.org/model/randall-amanda-rotorway-exec-162f): 1 cases
- [Siemens Jim ROTORWAY EXEC 162F](https://openairdocs.org/model/siemens-jim-rotorway-exec-162f): 1 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 4 cases
- [Main rotor system, general](https://openairdocs.org/ntsb-findings/01046200) (Aircraft): 2 cases
- [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 1 cases
- [Gusts](https://openairdocs.org/ntsb-findings/03034045) (Environmental issues): 1 cases
- [Repair](https://openairdocs.org/ntsb-findings/02062015) (Personnel issues): 1 cases
- [Flight planning/navigation](https://openairdocs.org/ntsb-findings/02061025) (Personnel issues): 1 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1 cases
- [Total experience](https://openairdocs.org/ntsb-findings/02031015) (Personnel issues): 1 cases
- [Attention](https://openairdocs.org/ntsb-findings/02021510) (Personnel issues): 1 cases
- [Pitch control](https://openairdocs.org/ntsb-findings/01062022) (Aircraft): 1 cases

## Newest cases

- [NTSB WPR22LA146](https://openairdocs.org/ntsb/WPR22LA146), Apr 7, 2022: Robinson Helicopter R22 (N19VH), Phoenix, AZ, substantial damage. Probable cause: The pilot’s failure to maintain helicopter control while on the ground when his attention was diverted, which resulted in a dynamic rollover.
- [NTSB GAA16CA160](https://openairdocs.org/ntsb/GAA16CA160), Mar 23, 2016: Robinson R44 (N843JB), Oak Island, NC, substantial damage. Probable cause: The student pilot's failure to maintain a stabilized hover, resulting in a loss of control and an impact with terrain.
- [NTSB WPR14CA006](https://openairdocs.org/ntsb/WPR14CA006), Oct 5, 2013: Siemens Rotorway Exec 162F (N104BJ), Nampa, ID, substantial damage. Probable cause: A flight control malfunction during cruise flight for reasons that could not be determined. No follow-up examination was conducted due to a lapse in agency funding and subsequent government shutdown.
- [NTSB WPR12LA219](https://openairdocs.org/ntsb/WPR12LA219), May 20, 2012: Enstrom F28 (N63VP), Twin Falls, ID, substantial damage. Probable cause: The pilot's inability to maintain helicopter control during cruise flight due to the failure of the No. 2 main rotor Lamiflex bearing. Contributing to the accident was the pilot's decision to operate…
- [NTSB ERA09CA045](https://openairdocs.org/ntsb/ERA09CA045), Nov 9, 2008: Randall Amanda Rotorway (N103DE), Middletown, DE, substantial damage. Probable cause: The student pilot’s excessive use of cyclic during the engine run-up. Contributing to the accident were the student pilot’s lack of overall experience and the gusting wind conditions.
- [NTSB ANC08LA083](https://openairdocs.org/ntsb/ANC08LA083), Jun 30, 2008: Bell UH-1B (N64RA), Iliamna, AK, substantial damage. Probable cause: The failure of company maintenance personnel to ensure the helicopter was properly maintained, resulting in a severe in-flight vibration due to collective bounce. Contributing to the accident was…
- [NTSB DFW08TA066](https://openairdocs.org/ntsb/DFW08TA066), Feb 8, 2008: Hughes OH-6 (N66372), Valentine, TX, substantial damage. Probable cause: The contract mechanic's failure to properly secure the castellated nut that attached the governor lever control rod to the idler bell crank. Contributing to the accident was the lack of maintenance…
- [NTSB SEA08CA059](https://openairdocs.org/ntsb/SEA08CA059), Jan 13, 2008: Bell 206 B2 (N49588), La Verna, CA, substantial damage. Probable cause: The pilot's improper preflight planning which resulted in a jammed cyclic control while maneuvering.
- [NTSB SEA08CA065](https://openairdocs.org/ntsb/SEA08CA065), Jan 8, 2008: Robinson R-22 (N8280J), Riverside, CA, substantial damage. Probable cause: The pilot's misjudged landing flare and improper use of the collective control.

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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