# Tail rotor head

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft propeller/rotor](https://openairdocs.org/ntsb-findings/0104) › [Tail rotor](https://openairdocs.org/ntsb-findings/010464) › Tail rotor head
- NTSB code: 01046420
- Cases: 2
- In the probable cause: 1
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01046420/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01046420/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01046420

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

- 2009: 0 / 1
- 2022: 1 / 1

## Defining events in these cases

- [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 1 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1 cases

## Aircraft models (registry)

- [Bell Helicopter Textron Canada 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407): 1 cases
- [Yates W/Lazar M SAFARI HELICOPTER](https://openairdocs.org/model/yates-w-lazar-m-safari-helicopter): 1 cases

## Other findings in the same cases

- [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 1 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Post maintenance inspection](https://openairdocs.org/ntsb-findings/02061515) (Personnel issues): 1 cases
- [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 1 cases
- [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 1 cases
- [Tail rotor blade](https://openairdocs.org/ntsb-findings/01046410) (Aircraft): 1 cases

## Newest cases

- [NTSB ERA22FA257](https://openairdocs.org/ntsb/ERA22FA257), Jun 4, 2022: Bell Helicopter Textron Canada 407 (N98ZA), Fairfield, NJ, substantial damage. Probable cause: The failure of maintenance personnel to properly secure the tail rotor crosshead drive plate and the failure of maintenance personnel, the maintenance pilot, and the accident pilot to detect the…
- [NTSB CEN09CA584](https://openairdocs.org/ntsb/CEN09CA584), Sep 13, 2009: Yates W/Lazar M Safari Helicopter (N555BB), Cedar Park, TX, substantial damage. Probable cause: An in-flight separation of the tail rotor blades and the tail rotor gearbox for undetermined reasons.

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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