SEA07CA256

NTSB accident investigation · Rogerson Hiller RH-1100 · Stanwood, WA · September 11, 2007

Accident · Minor injuriesData collectionFinal report
Date
September 11, 2007, 11:00 local (18:00 UTC)
Place
Stanwood, WA
Injuries
1 minor, 2 uninjured
Damage
Destroyed
Phase of flight
Landing
Aircraft
N6014URogerson Hiller RH-1100
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2007
Report
Approved by Office Director
FAA report
20070911017799A
Case key
66644

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to execute a go-around and his failure to reduce his groundspeed to zero prior to touching down on the rough/uneven terrain. Factors include the momentary restriction of a flight control, rough/uneven terrain, and a tailwind.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Roll overLanding - flare/touchdown
Cyclic - restrictedPassengerFactor
In-flight planning/decision - improperPilot in commandCause
Airspeed - excessivePilot in commandCause
Terrain condition - rough/unevenFactor
Weather condition - tailwindFactor

Analysis

While en route to his planned destination, the pilot noticed that one of two latches on the right side cabin door had come loose. He therefore elected to land in a grassy area alongside the runway of a nearby airstrip. While turning from base to final, the cyclic was momentarily restricted by being caught on the shorts of the passenger. Although the movement of the cyclic was only momentarily restricted, it resulted in the pilot delaying his transition to a slower airspeed and a reduced rate of descent prior to establishing a pre-landing hover. Instead of executing a go-around, the pilot decided to continue his transition, but he was unable to enter a hover prior to touching down with a slight forward movement on the rough uneven terrain. When the helicopter touched down, the left skid became stuck in a rut, and that, along with a slight tailwind and the residual forward movement of the helicopter, resulted in a dynamic rollover. In his written statement, the pilot said, "Making a go-around would have been the best way to prevent this accident."

Factual narrative

While en route to his planned destination, the pilot noticed that one of two latches on the right side cabin door had come loose. He therefore elected to land in a grassy area alongside the runway of a nearby airstrip. While turning from base to final, the cyclic was momentarily restricted by being caught on the shorts of the passenger. Although the movement of the cyclic was only momentarily restricted, it resulted in the pilot delaying his transition to a slower airspeed and a reduced rate of descent prior to establishing a pre-landing hover. Instead of executing a go-around, the pilot decided to continue his transition, but he was unable to enter a hover prior to touching down with a slight forward movement on the rough uneven terrain. When the helicopter touched down, the left skid became stuck in a rut, and that, along with a slight tailwind and the residual forward movement of the helicopter, resulted in a dynamic rollover. In his written statement, the pilot said, "Making a go-around would have been the best way to prevent this accident."

Aircraft

Registration
N6014U
Reported as
Rogerson Hiller RH-1100
Category
Helicopter
Serial number
504
Engine
Allison 250-C20B, turbo shaft
Damage
Destroyed
Fire
On-Ground
Flight
Business · Part 91
Operator
David A. Robinson
Registered owner
Robinson Properties and Investments, LLC
Airworthiness certificate
Standard, Normal
Departed
KBVS · Burliington, WA
Destination
KPAE · Everett, WA
Airport
13W · Camano-Stanwood

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2
Flight hours
1,500 total · 110 in this make and model · 42 in the last 90 days · 22 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Lowest ceiling
None

Docket · 1

The files NTSB released with the investigation on October 24, 2007, on NTSB’s docket system: statements, records, photos and specialists’ reports. 331 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.