# Aux gear (tail/rotorcrft skid)

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Landing gear system](https://openairdocs.org/ntsb-findings/010232) › Aux gear (tail/rotorcrft skid)
- NTSB code: 01023270
- Cases: 7
- In the probable cause: 7
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01023270/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023270/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01023270

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

- 2012: 2 / 2
- 2014: 3 / 3
- 2016: 1 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Ground resonance](https://openairdocs.org/ntsb-events/232): 2 cases
- [Dynamic rollover](https://openairdocs.org/ntsb-events/231): 2 cases
- [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 1 cases
- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 1 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1 cases

## Aircraft models (registry)

- [Schweizer 269C](https://openairdocs.org/model/schweizer-269c): 3 cases
- [Schweizer 269C-1](https://openairdocs.org/model/schweizer-269c-1): 1 cases
- [Robinson Helicopter R44](https://openairdocs.org/model/robinson-helicopter-r44): 1 cases
- [Mearns Robert C ROTORWAY EXEC](https://openairdocs.org/model/mearns-robert-c-rotorway-exec): 1 cases
- [Bell 47G](https://openairdocs.org/model/bell-47g): 1 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 2 cases
- [Altitude](https://openairdocs.org/ntsb-findings/01062012) (Aircraft): 2 cases
- [Maintenance records](https://openairdocs.org/ntsb-findings/04033025) (Organizational issues): 1 cases
- [Oversight of personnel](https://openairdocs.org/ntsb-findings/04032010) (Organizational issues): 1 cases
- [High wind](https://openairdocs.org/ntsb-findings/03034055) (Environmental issues): 1 cases
- [Gusts](https://openairdocs.org/ntsb-findings/03034045) (Environmental issues): 1 cases
- [Soft surface](https://openairdocs.org/ntsb-findings/03023020) (Environmental issues): 1 cases
- [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 1 cases
- [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 1 cases
- [Lateral/bank control](https://openairdocs.org/ntsb-findings/01062023) (Aircraft): 1 cases

## Newest cases

- [NTSB CEN25LA067](https://openairdocs.org/ntsb/CEN25LA067), Dec 31, 2024: Robinson Helicopter R44 (N441HQ), Galveston, TX, substantial damage. Probable cause: The pilot’s failure to maintain terrain clearance during the takeoff from the helipad in high and gusting wind conditions, that resulted in the right skid extension embedding in the artificial turf,…
- [NTSB ERA16LA301](https://openairdocs.org/ntsb/ERA16LA301), Aug 26, 2016: Means Rober C Rotorway Exec (N48KM), Iron Station, NC, substantial damage. Probable cause: The pilot’s failure to maintain adequate clearance from the ground while hovering, which resulted in separation of the forward section of the right skid tube with counterweight attached, a sudden…
- [NTSB CEN14LA269](https://openairdocs.org/ntsb/CEN14LA269), May 31, 2014: Schweizer 269C (N902CP), Temple, TX, substantial damage. Probable cause: Ground resonance due to maintenance personnel’s improper inspection of the landing gear dampers, which resulted in the dampers operating outside of allowable limits.
- [NTSB WPR14CA196](https://openairdocs.org/ntsb/WPR14CA196), May 18, 2014: Bell 47G (N16414), Bakersfield, CA, substantial damage. Probable cause: The pilot's failure to maintain aircraft control after the helicopter's skid catching on the side of a trailer during takeoff, which resulted in a dynamic rollover.
- [NTSB ERA14LA101](https://openairdocs.org/ntsb/ERA14LA101), Jan 21, 2014: Schweizer 269C 1 (N2110J), Titusville, FL, substantial damage. Probable cause: The flight instructor’s inadvertent side-loading of the left skid while demonstrating a running landing, which resulted in a bending overstress fracture of the left skid tube and a subsequent…
- [NTSB CEN12LA343](https://openairdocs.org/ntsb/CEN12LA343), Jun 2, 2012: Schweizer 269C (N2196F), Denver, CO, substantial damage. Probable cause: 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…
- [NTSB ERA12LA362](https://openairdocs.org/ntsb/ERA12LA362), May 24, 2012: Schweizer 269C (N7505Y), Asheville, NC, substantial damage. Probable cause: 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 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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