LAX05LA119

NTSB accident investigation · Robinson R-22 Beta · Waddell, AZ · March 22, 2005

Accident · No injuriesLimited investigationFinal report
Date
March 22, 2005, 10:00 local (17:00 UTC)
Place
Waddell, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N716GHRobinson R-22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report August 29, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
Case key
61185

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 maintain adequate rotor rpm and obstacle clearance, resulting in a dynamic rollover and collision with terrain.

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 overManeuvering
Rotor rpm - not maintainedPilot in commandCause
Terrain condition - high vegetationFactor
Altitude/clearance - not maintainedPilot in commandCause
Dynamic rollover - encounteredPilot in command

Analysis

The helicopter contacted high vegetation and rolled over while maneuvering at low altitude. The pilot reported that he went over a small hill into a ravine. As he tried to gain altitude to climb out of the ravine, rotor rpm decayed. The pilot turned the helicopter; however, the right skid hooked onto vegetation. The helicopter rolled over separating the main rotor system, tail boom, and tail rotor.

Factual narrative

On March 22, 2005, about 1000 mountain standard time, a Robinson R-22 Beta, N716GH, contacted high vegetation and rolled over while maneuvering at low altitude near Waddell, Arizona. Gold Coast Aviation was operating the helicopter under the provisions of 14 CFR Part 91. The commercial pilot and one passenger were not injured; the helicopter sustained substantial damage. The personal local flight departed Glendale, Arizona, about 0900. Visual meteorological conditions prevailed, and no flight plan had been filed.

The pilot and passenger rented the helicopter from Gold Coast Aviation with an intended flight from Glendale to Tucson, Arizona. Prior to departure, the pilot and passenger agreed that they would fly north for a photo flight over the passenger's house before heading to Tucson. The pilot reported that after the photo flight, they proceeded westbound to try to locate a few of his friends who were riding in the desert. He stated that he never intended on landing, but after locating them, he decided to land.

The pilot reported that he went over a small hill into a ravine. As he tried to gain altitude to climb out of the ravine, main rotor rpm decayed. The pilot turned the helicopter; however, the right skid hooked onto vegetation. The helicopter rolled over separating the main rotor system, tail boom, and tail rotor.

The pilot stated that the helicopter and engine had no mechanical failures or malfunctions during the flight. The operator submitted a Pilot/Operator Aircraft Accident Report (NTSB form 6120 1/2). The pilot did not submit an NTSB Form 6120. 1/2, but did submit a written statement.

Aircraft

Registration
N716GH
Reported as
Robinson R-22 Beta
Category
Helicopter
Serial number
3752
Airframe hours
100.7
Engine
Lycoming O-360, 124 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Gold Coast Helicopters Inc
Registered owner
GCA International, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · March 1, 2005 · 1.7 hours before
Departed
GEU · Glendale, AZ
Destination
TUS · Tucson, AZ
Flight plan
Unknown

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
46
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Helicopter, Airplane
Medical
Class 2
Last flight review
March 1, 2004
Seat
Right
Flight hours
6,149 total · 300 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 37 °F
Altimeter
30.00 inHg
Observed at
DVT