# NTSB CHI08CA023: Robinson R44 Raven II, N3246H, Morrison, MO, October 19, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: October 19, 2007, 16:35 local (21:35 UTC)
- Place: Morrison, MO
- Coordinates: 38.520278, -91.628608
- Nearby events: https://openairdocs.org/map.md?lat=38.5203&lon=-91.6286&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 20, 2007
- Report: Approved by Office Director
- Parties: FAA-STL-FSDO
- NTSB case key (mKey): 67030
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI08CA023
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67030/pdf
- Page: https://openairdocs.org/ntsb/CHI08CA023

## Probable cause

Loss of control on the ground due to aircraft control not being maintained by the pilot. Contributing factors were the gusting winds and the uneven ground.

## Sequence of events

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

- Loss of control - on ground/water, landing - flare/touchdown
  - weather condition - gusts (contributing factor)
  - terrain condition - rough/uneven (contributing factor)
  - aircraft control - not maintained, pilot in command (cause)
- Roll over, landing - flare/touchdown

## Analysis

The helicopter was substantially damaged following a loss of control while landing.  The accident occurred during an off airport landing on uneven, soft terrain in gusty wind conditions.  The pilot set the back of the skids down and was lowering the nose when the helicopter rocked "deeply" forward, then back and to the left.  The helicopter then rolled over coming to rest on its left side.  The pilot reported the local winds were at 15 knots, gusting to 25 knots.

## Factual narrative

The helicopter was substantially damaged following a loss of control while landing.  The accident occurred during an off airport landing on uneven, soft terrain in gusty wind conditions.  The pilot set the back of the skids down and was lowering the nose when the helicopter rocked "deeply" forward, then back and to the left.  The helicopter then rolled over coming to rest on its left side.  The pilot reported the local winds were at 15 knots, gusting to 25 knots.

## Aircraft

- Registration: [N3246H](https://openairdocs.org/aircraft/N3246H), registered now, S/N 11698, built 2007 (OpenAirDocs)
- Reported make and model: Robinson R44 Raven II
- Registry model: [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii) (registry code 7640122) (OpenAirDocs)
- Registry engine: [Lycoming IO-540-AE1A5](https://openairdocs.org/engine/lycoming-io-540-ae1a5) (registry code 41899, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 11698
- Engines: Textron Lycoming IO-540-AE1A5 205 horsepower turbo shaft
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Pilot
- Airworthiness certificate: Standard, Normal
- Departed: K26, Carrollton, MO
- Destination: Morrison, MO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; injuries: none; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, without waivers/limitations; last flight review May 1, 2007; seat: right; flight hours: 2,360 total, 35 in this make and model, 47 in the last 90 days, 7 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 15 knots, gusting 25
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 59 °F
- Altimeter: 30.04 inHg

## 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 20071019825139A](https://openairdocs.org/incident/20071019825139A), Oct 19, 2007: Robsin R44RAVENII, Morrison, MO, Substantial damage. (-23) On October 19, 2007, the pilot [privacy data omitted] flew his privately owned Robinson R-44 ii helicopter for personal transportation to an associates…

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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