SEA08CA002

NTSB accident investigation · Robinson R44 II · Lake Powell, UT · October 2, 2007

Accident · Minor injuriesData collectionFinal report
Date
October 2, 2007, 10:00 local (16:00 UTC)
Place
Lake Powell, UT
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N644BSRobinson R44 II
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2007
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20071002825149A
Case key
66802

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

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Probable cause

The pilot's inadequate preflight inspection and failure to remove a tie-down strap before departure.

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 overTakeoff
Aircraft preflight - inadequatePilot in commandCause
Ground tie-down rope/strap - not removedPilot in commandCause

Analysis

The pilot stated he was distracted during the preflight inspection and neglected to remove the left rear tie-down. During takeoff, the helicopter rolled and came to rest on its left side. The helicopter sustained substantial damage to the main rotors, tail boom, and cabin.

Factual narrative

On October 2, 2007, about 1000 mountain daylight time, a Robinson R44 II N644BS, rolled over at a watercraft landing zone in Lake Powell, Utah. The pilot was operating the helicopter under the provisions of 14 CFR Part 91. The private pilot and one passenger sustained minor injuries; the helicopter sustained substantial damage. The local personal flight was departing Lake Powell with a planned destination of Page Municipal Airport, Page, Arizona. Visual meteorological conditions prevailed, and no flight plan had been filed.

In a written report to the National Transportation Safety Board, the pilot stated he was distracted during the preflight inspection and neglected to remove the left rear tie-down strap. Upon departure, he sensed the helicopter had a tendency to turn to the left. He noted that the helicopter was reacting in an uncontrolled manner. During an attempt to return from hover to the landing zone, the helicopter rolled and came to rest on its left side. The helicopter sustained substantial damage to the main rotors, tail boom, and cabin.

Aircraft

Registration
N644BS
Reported as
Robinson R44 II
Category
Helicopter
Serial number
11642
Airframe hours
155
Engine
Lycoming IO-540-AE1A5, 245 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 1, 2007
Departed
Lake Powell, UT
Destination
PGA · Page, AZ
Airport
NONE · Watercraft LZ

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
63
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land, Multi-engine sea
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
February 1, 2007
Seat
Right
Flight hours
6,052 total · 1,796 in this make and model · 38 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 45 °F
Altimeter
30.28 inHg
Observed at
PGA

FAA reports on this event · 1

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