FTW96LA008

NTSB accident investigation · Bell 47-G2 · Freer, TX · October 5, 1995

Accident · Minor injuriesLimited investigationFinal report
Date
October 5, 1995, 09:15 local (14:15 UTC)
Place
Freer, TX
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N4423Bell 47-G2
Weather
Visual (VMC) · Day
Status
Completed · report April 29, 1996
Report
Approved by Office Director
FAA report
19951005048789A
Case key
19682

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 clearance from the power lines due to his improper takeoff technique. A factor was the helicopter induced blowing dust which impaired the pilot's visibility.

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 collision with objectTakeoff - initial climb
Terrain condition - loose gravel/sandyFactor
Lift-off - improperPilot in commandCause
Visual/aural detectionPilot in commandFactor
Clearance - not maintainedPilot in commandCause
Object - wire,transmission

Analysis

The pilot reported that he took off from a road with the winds from the north at 1-3 knots. During the initial climb, 'extremely dusty conditions' from the rotor wash prevented him from seeing the power lines. A skid hooked the lines and the aircraft rotated to the right. The pilot further reported that he increased collective pitch; however, the tail rotor blades contacted the lines and tail rotor control was lost immediately.

Factual narrative

On October 5, 1995, at 0915 central daylight time, a Bell 47-G2, N4423, registered to and operated by a private owner under Title 14 CFR Part 91 was substantially damaged following impact with power lines near Freer, Texas. Visual meteorological conditions prevailed for the local flight and a flight plan was not filed. The commercial pilot sustained minor injuries and his passenger was not injured. The flight was originating, at the time of the accident, from the Caramucha Ranch.

The pilot reported that he initiated a takeoff from a county road, with the winds from the north at approximately 1-3 knots. During initial climb, "extremely dusty conditions from [the] rotor wash" prevented him from seeing the power lines. A skid "hooked the lines and the aircraft rotated to the right." The pilot further reported that he increased collective pitch; however, "the tail rotor blades contacted the lines and tail rotor control was lost immediately." The pilot responded by "chopping" the throttle and cushioning the landing with the collective.

Examination of the aircraft revealed that the tailboom had separated from the helicopter, the centerframe was structurally damaged, and the main rotor blades had partially separated from the aircraft.

Aircraft

Registration
N4423
Reported as
Bell 47-G2
Category
Helicopter
Serial number
295
Airframe hours
4,458
Engine
Lycoming VO-435 AID, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Registered owner
Kenneth A. Wilson
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · January 13, 1995 · 94 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
60
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,100 total · 1,000 in this make and model · 45 in the last 90 days · 30 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 17 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 61 °F
Altimeter
29.00 inHg
Observed at
LRD, 65 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 N4423 · 1

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