MIA85LA243

NTSB accident investigation · Bell 47G-2 · Moore Haven, FL · September 4, 1985

Accident · No injuriesLimited investigationFinal report
Date
September 4, 1985, 08:30 local (12:30 UTC)
Place
Moore Haven, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8429EBell 47G-2
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850904045889A
Case key
31446

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.

Loss of engine power(total) - nonmechanicalDescent - normal
Anti-ice/deice system,carburetor/heat - not engagedCause
In-flight planning/decision - poorPilot in commandCause
Weather condition - carburetor icing conditionsFactor
Remedial action - inadequatePilot in commandFactor
Carburetor heat - improper use ofPilot in commandCause
Forced landingDescent - emergency
In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - hidden obstruction(s)

Analysis

The plt stated that while flying around his property, he slowed the helicopter up to descend and land, at aprx 40 ft altitude the eng lost power due to carburator ice buildup. He autorotated to a landing & on touchdown his right skid contacted a large boulder and the main rotor tilted back and struck the tailboom. Investigation revealed, at the time of the accident the helicopter was operating at a temperature and dewpoint that in reference to performance charts is condusive to carburator venturi icing.

Aircraft

Registration
N8429E
Reported as
Bell 47G-2
Category
Helicopter
Serial number
2478
Airframe hours
6,023
Engine
Lycoming VO-435-AIB, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
James Kilpatrick
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 4, 1985 · 33 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
35
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
1,311 total · 140 in this make and model · 1,236 as pilot in command · 40 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 75 °F
Altimeter
30.00 inHg
Observed at
FMY, 40 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 N8429E · 1

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