FTW91LA166

NTSB accident investigation · Bell 47G-5A · Pearsall, TX · September 26, 1991

Accident · Minor injuriesLimited investigationFinal report
Date
September 26, 1991, 16:20 local (21:20 UTC)
Place
Pearsall, TX
Injuries
3 minor
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N59424Bell 47G-5A
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1993
Report
Approved by Office Director
FAA report
19910926063239A
Case key
23402

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 adequate visual lookout for obstacles during operations from a remote site.

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
Object - wire,transmission
Visual lookout - inadequatePilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Pilot was on a power line patrol flight and had landed in an area near a road to refuel from the operator's truck prior to the last leg of the day. During the initial climb after takeoff, the skids struck power lines he had not observed during the approach or takeoff. Following the wire strike the aircraft nosed over, impacted the ground, and was destroyed during a post-crash fire.

Aircraft

Registration
N59424
Reported as
Bell 47G-5A
Category
Helicopter
Serial number
25143
Airframe hours
5,957
Engine
Lycoming VO-435-B1A, 260 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial observation · Part 91
Operator
Tiller Helicopter Service, Inc
Registered owner
Tiller Helicopter Service, Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 23, 1991 · 78 hours before
Destination
NONE · Alice, TX

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
45
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
1,119 total · 50 in this make and model · 1,057 as pilot in command · 50 in the last 90 days · 50 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
335° at 10 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point -0 °F

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 N59424 · 1

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