# NTSB SEA08CA019: Robinson R22 Beta, N3189Z, Parma, ID, November 3, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: November 3, 2007, 10:40 local (16:40 UTC)
- Place: Parma, ID
- Coordinates: 43.778888, -116.938613
- Nearby events: https://openairdocs.org/map.md?lat=43.7789&lon=-116.9386&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 20, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 67014
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA08CA019
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67014/pdf
- Page: https://openairdocs.org/ntsb/SEA08CA019

## Probable cause

The student pilot's improper use of the flight controls while performing a hovering autorotation and the flight instructor's excessive remedial action which resulted in a hard landing.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Hard landing, landing - flare/touchdown
  - emergency procedure - simulated, pilot in command(cfi)
  - rotorcraft flight controls - improper use of, dual student (cause)
  - remedial action - excessive, pilot in command(cfi) (cause)

## Analysis

The flight instructor reported that he and his student were practicing hovering autorotations.  After the student successfully performed two hovering autorotations from a height of 2 inches, the flight instructor had the student bring the helicopter to a 1-foot hover.  During initiation of the maneuver from this altitude, the student pilot applied full right pedal and began to roll the throttle on, which "immediately resulted in substantial right yaw."  The flight instructor corrected by adding left pedal, rolling the throttle off, and lowering the collective.  These actions overcorrected for the right yaw and resulted in a left yaw.  As the skids touched the ground, the flight instructor fully lowered the collective.  The aft cross tube was bent, and the tail boom was wrinkled.

## Factual narrative

The flight instructor reported that he and his student were practicing hovering autorotations.  After the student successfully performed two hovering autorotations from a height of 2 inches, the flight instructor had the student bring the helicopter to a 1-foot hover.  During initiation of the maneuver from this altitude, the student pilot applied full right pedal and began to roll the throttle on, which "immediately resulted in substantial right yaw."  The flight instructor corrected by adding left pedal, rolling the throttle off, and lowering the collective.  These actions overcorrected for the right yaw and resulted in a left yaw.  As the skids touched the ground, the flight instructor fully lowered the collective.  The aft cross tube was bent, and the tail boom was wrinkled.

## Aircraft

- Registration: [N3189Z](https://openairdocs.org/aircraft/N3189Z), registered now, S/N 4105, built 2007 (OpenAirDocs)
- Reported make and model: Robinson R22 Beta
- Registry model: [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta) (registry code 7640110) (OpenAirDocs)
- Registry engine: [Lycoming O-360-J2A](https://openairdocs.org/engine/lycoming-o-360-j2a) (registry code 42314, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 4105
- Engines: Lycoming O-360-J2A reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Silverhawk Aviaiton Academy LLC
- Airworthiness certificate: Standard, Normal
- Departed: EUL, Caldwell, ID
- Destination: 50S, Parma, ID
- Airport: 50S, Parma

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Flight instructor; age 29; commercial; instrument ratings: helicopter; medical: class 2; flight hours: 416 total, 364 in this make and model, 183 in the last 90 days, 70 in the last 30 days
- Student pilot; age 25; flight hours: 28 total, 28 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 30 °F, dew point 25 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20071103826369A](https://openairdocs.org/incident/20071103826369A), Nov 3, 2007: Robsin R22BETA, Parma, ID, Substantial damage. (-23) During hovering autorotation instruction, the aircraft struck the ground hard on the right skid. The hard landing resulted in damage to the aircraft…

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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