ATL94LA009

NTSB accident investigation · Bell 47G2 · Billingsley, AL · October 25, 1993

Accident · No injuriesLimited investigationFinal report
Date
October 25, 1993, 11:30 local (16:30 UTC)
Place
Billingsley, AL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N866ZBell 47G2
Weather
Visual (VMC) · Day
Status
Completed · report December 2, 1994
Report
Approved by Office Director
FAA report
19931025046189A
Case key
3320

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 improper vertical liftoff which resulted in dynamic roll-over and the main rotor's impact with the ground.

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 overTakeoff
Vertical takeoff - improperPilot in commandCause

Analysis

The pilot reported that as he attempted to takeoff from a transport trailer, the right skid hooked a bracket. Dynamic roll- over was induced and the helicopter rolled until the main rotor blades impacted the ground.

Factual narrative

On October 25, 1993, about 1130 central daylight time, a Bell 47G2 helicopter, N866Z, rolled over during takeoff from a transport trailer near Billingsley, Alabama. The helicopter was registered to and operated by Precision Air Services, Inc. It was operated under 14 CFR Part 137 and visual flight rules. A flight plan was not filed for the agricultural operation. The commercial pilot was not injured while the helicopter was substantially damaged. The flight was originating at the time of the accident.

According to the pilot the right skid hooked a bracket on the trailer as lift off occurred. The helicopter rolled over onto its right side, which allowed the main rotor to contact the ground. The pilot stated that there were no mechanical malfunctions.

Aircraft

Registration
N866Z
Reported as
Bell 47G2
Category
Helicopter
Serial number
C-5006
Airframe hours
2,172
Engine
Lycoming VO-435-A1D, 240 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Precision Air Services, Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · September 2, 1993 · 36 hours before
Departed
NONE

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
48
Certificate
Commercial
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
10,000 total · 300 in this make and model · 10,000 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 9 knots
Visibility
7 statute miles
Lowest ceiling
25,000 ft overcast
Temperature
66 °F, dew point 52 °F
Altimeter
30.00 inHg
Observed at
MGM, 30 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 N866Z · 2

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