MIA01LA231

NTSB accident investigation · Bell OH-58A · Sevierville, TN · September 27, 2001

Accident · No injuriesLimited investigationFinal report
Date
September 27, 2001, 17:20 local (21:20 UTC)
Place
Sevierville, TN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N923MCBell OH-58A
Weather
Visual (VMC) · Day
Status
Completed · report June 3, 2002
Report
Approved by Office Director
Parties
FAA FSDO, Bell Helicopter
FAA report
20010927027379A
Case key
53541

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 failure of the pilot to maintain control of the helicopter while approach to land resulting in a hard landing, a tail rotor ground strike, and the main rotor striking the tail boom.

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 flightLanding
Aircraft control - not maintainedPilot in commandCause
Hard landingDescent - uncontrolled

Analysis

The pilot stated that as he approached his landing zone, while about 3 feet agl, the helicopter veered to the left. He corrected using right cyclic and by lowering the collective. The helicopter touched down hard causing a tailrotor strike and the main rotor to strike the tail boom. Postcrash examination of the helicopter at the crash site by an FAA Inspector, and after recovery from the crash site by an FAA Inspector and a representative of Bell Helicopter confirmed that continuity of flight control components existed at the time of impact, and that there was freedom of movement throughout the flight control systems after recovery. The examination confirmed that there was a high rate of rotation of the drive train components at the time of impact. There were no preimpact airframe anomalies identified.

Factual narrative

On September 27, 2001, about 1720 eastern daylight time, a Bell OH-58A, N923MC, registered to Vista-Dome Simulation Corporation, crashed during landing near Sevierville, Tennessee, while on a 14 CFR 91 aerial filming flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The helicopter received substantial damage and the commercial-rated pilot and one passenger were not injured. The flight originated from Sevierville, Tennessee, the same day, about 1645.

The pilot stated that he was flying the helicopter from the right front seat and his passenger was in the left front seat. As he approached his landing zone, while about 3 feet agl, the helicopter veered to the left. He corrected using right cyclic and by lowering the collective. The helicopter touched down hard causing a tailrotor strike and the main rotor to strike the tail boom.

Postcrash examination of the helicopter at the crash site by an FAA Inspector, and after recovery from the crash site by an FAA Inspector and a representative of Bell Helicopter confirmed that continuity of flight control components existed at the time of impact, and that there was freedom of movement throughout the flight control systems after recovery. The examination confirmed that there was a high rate of rotation of the drive train components at the time of impact. There were no preimpact airframe anomalies identified. Cyclic controls were installed in both the left and right front seat positions. (See Bell Helicopter report, an attachment to this report)

Aircraft

Registration
N923MC
Reported as
Bell OH-58A
Category
Helicopter
Serial number
7015637
Airframe hours
7,530
Engine
Allison T63-A-720A, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Other work use · Part 91
Registered owner
Vista Dome Simulation Corporation
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · September 1, 2001 · 3 hours before
Departed
Sevierville, TN

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
63
Injuries
None
Certificates
Private, Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
September 24, 2000
Seat
Right
Flight hours
831 total · 193 in this make and model · 788 as pilot in command · 30 in the last 90 days · 12 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 45 °F
Altimeter
30.01 inHg
Observed at
TYS, 25 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.