ATL83FA122

NTSB accident investigation · Bell 47G-2 · Hardeeville, SC · February 26, 1983

Accident · No injuriesField investigationFinal report
Date
February 26, 1983, 11:45 local (16:45 UTC)
Place
Hardeeville, SC
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5191BBell 47G-2
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830226005459A
Case key
5893

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

On this page

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.

Airframe/component/system failure/malfunctionManeuvering - aerial application
Maintenance,lubrication - inadequateOther maintenance personnelCause
Maintenance,inspection - inadequateOther maintenance personnelCause
Rotor drive system,tail rotor drive shaft - overtemperatureCause
Rotor drive system,tail rotor drive shaft - wornCause
Rotor drive system,tail rotor drive shaft - failure,totalCause
Directional control - reducedFactor
Forced landingLanding - flare/touchdown
Autorotation - performedPilot in commandFactor
In flight collision with objectApproach - vfr pattern - final approach
Object - tree(s)Factor
Hard landingLanding - flare/touchdown

Analysis

The plt stated that he noticed a peculiar pedal reaction during a turn-around; however, he reported that this may have been caused by the wind which was gusting to 15 KTS. Shortly after completing the turn-around, he experienced a complete loss of tail rotor control. The failure was realized by a reduction of noise, an RPM increase & ayaw to the right. This occurred at an altitude of aprx 300 ft AGL. The plt was unable to maintain directional control in flt, so he autorotated to a narrow logging road. While descending to land, the main rotor struck trees on both sides of the road. During touchdown. The main rotor struck & svered the tail boom. An exam revealed the teeth on the forward (short) tail rotor drive shaft, pn 47-644-180-9, were worn & overheated. Also, the matching splines on the front coupling, pn 47-620-494-3, were overheated & stripped. Only a minimal amount of lubrication was found in the front coupling. The bell maintenance & overhaul instructions recommended daily inspections & lube every 50 hrs.

Aircraft

Registration
N5191B
Reported as
Bell 47G-2
Category
Helicopter
Serial number
2176
Engine
Lycoming VO-435-A1F, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
J. D. Turner, Atlanta Helicop.
Registered owner
Jack D. Turner
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · October 1, 1982 · 124 hours before

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
30
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,540 total · 160 in this make and model · 1,496 as pilot in command · 150 in the last 90 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
45° at 10 knots, gusting 15
Visibility
15 statute miles
Lowest ceiling
None
Temperature
36 °F

FAA reports on this event · 1

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