ATL87LA229

NTSB accident investigation · Bell 47G (TOM CAT) · Dothan, AL · August 10, 1987

Accident · Minor injuriesLimited investigationFinal report
Date
August 10, 1987, 10:50 local (15:50 UTC)
Place
Dothan, AL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N10175Bell 47G (TOM CAT)
Weather
Visual (VMC) · Day
Status
Completed · report October 25, 1988
Report
Approved by Office Director
FAA report
19870810043879A
Case key
7498

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.

In flight encounter with weatherManeuvering - aerial application
Weather condition - unfavorable windFactor
Weather condition - tailwindFactor
Altitude deviation,uncontrolledManeuvering - aerial application
Descent
In flight collision with objectManeuvering
Object - tree(s)Factor
In-flight planning/decision - improperPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The plt rprtd that while he was making a turn-around over trees after the 1st swath run, the helicopter enctrd a sudden wind change. He stated that the wind cond was from a cumulus buildup which put him in a tailwind situation. As he completed his turn with near zero airspeed, the helicopter bgn to settle with power. The plt tried to fly out of the situation, but the tail rotor struck a tree limb & separated, causing the helicopter to spin. The plt rolled off the throttle in an atmt to make an autorotation & the helicopter touched down hard.

Aircraft

Registration
N10175
Reported as
Bell 47G (TOM CAT) (47G (TOM C)
Category
Helicopter
Serial number
1272
Airframe hours
7,996
Engine
Franklin 210, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Allison, Rodney V., doing business as Allison Aviation
Registered owner
Allison, Rodney V
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · June 2, 1987 · 250 hours before

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
65
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
20,500 total · 600 in this make and model · 100 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
7 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 72 °F
Altimeter
30.00 inHg
Observed at
DHN, 5 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 N10175 · 3

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