DEN05LA130

NTSB accident investigation · Robinson R22 · Falcon, CO · August 25, 2005

Accident · Minor injuriesLimited investigationFinal report
Date
August 25, 2005, 17:00 local (23:00 UTC)
Place
Falcon, CO
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N777UHRobinson R22
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2006
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20050825020059A
Case key
62350

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 failure to maintain control of the helicopter while conducting a hovering maneuver.

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.

Loss of control - in flightHover
Aircraft control - not maintainedPilot in commandCause
Hard landingLanding - flare/touchdown
Roll overLanding

Analysis

The pilot said he was conducting a hovering maneuver. He said everything was normal until the helicopter was in a 5 foot hover above the surface moving at a "fast walking pace". The helicopter descended to approximately 2 feet above the surface when the pilot pulled in more power to arrest the descent. The helicopter skipped off of the surface, the low-rotor warning light illuminated, and the aural horn sounded. The helicopter turned to the right, impacting the right skid, then bounced back to the left skid, and rolled over on its left side. The pilot stated that he could smell fuel so his passenger turned off the fuel switch while he turned off all electrical switches. He also stated that he could not get his seatbelt unbuckled because it was too close to the collective. He eventually ripped the collective up to release the seatbelt buckle.

Factual narrative

On August 25, 2005, approximately 1700 mountain daylight time, a Robinson R22, N777UH, piloted by a private pilot, was substantially damaged when it impacted terrain at Meadow Lake Airport (00V), near Falcon, Colorado. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 CFR Part 91 on a visual flight rules flight plan. The pilot and passenger sustained minor injuries. The cross-country flight originated at Augusta, Kansas, at 1000, and was en route to Denver, Colorado.

According to the pilot, he was conducting a hovering maneuver. He said everything was normal until the helicopter was in a 5 foot hover above the surface moving at a "fast walking pace". The helicopter descended to approximately 2 feet above the surface when the pilot pulled in more power to arrest the descent. The helicopter skipped off of the surface, the low-rotor warning light illuminated, and the aural horn sounded. The helicopter turned to the right, the right skid struck the ground, then bounced back on to its left skid, and rolled over on its left side. The pilot stated that he could smell fuel so his passenger turned off the fuel switch while he turned off all the electrical switches. He stated that he could not get his seatbelt unbuckled because it was too close to the collective. He eventually ripped the collective up to release the seatbelt buckle.

According to an FAA inspector who traveled to the scene, both rotor blades were destroyed, the airframe was bent, the tail boom was twisted, both skids were bent, the firewall was buckled, the collective stop was broken, and the tail rotor shaft and flex plate were twisted.

Aircraft

Registration
N777UH
Reported as
Robinson R22
Category
Helicopter
Serial number
3548
Airframe hours
270.2
Engine
Lycoming 360 J2A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Ferry · Part 91
Registered owner
Sondrup Helicopters
Airworthiness certificate
Standard, Normal
Last inspection
Unknown · August 1, 2005 · 20.2 hours before
Departed
LIC · Limon, CO
Destination
00V · Falcon, CO
Flight plan
VFR
Airport
00V · Meadow Lake Airport

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
49
Injuries
Minor
Certificate
Private
Medical
Class 2, Without waivers/limitations
Last flight review
August 1, 2005
Seat
Right
Flight hours
128 in this make and model
Role
Other flight crew
Age
24
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Seat
Left
Flight hours
160 total · 50 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 17 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 48 °F
Altimeter
30.18 inHg
Observed at
KCOS, 10 nm away

FAA reports on this event · 1

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

Other investigations on N777UH · 1

Matched to the same aircraft by N-number and date.