CHI95LA270

NTSB accident investigation · Bell 47 · Arlington Hts, IL · August 12, 1995

Accident · Minor injuriesLimited investigationFinal report
Date
August 12, 1995, 10:25 local (15:25 UTC)
Place
Arlington Hts, IL
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4032GBell 47
Weather
Visual (VMC) · Day
Status
Completed · report November 8, 1995
Report
Approved by Office Director
FAA report
19950812023409A
Case key
9987

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

plot misjudged the flare. The factors included the pilot getting too close to the lead helicopter, allowing his airspeed to get too slow, and encountering settling with power.

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.

Hard landingLanding - flare/touchdown
Distance - not obtained/maintainedPilot in commandFactor
Flare - misjudgedPilot in commandCause
Airspeed - lowPilot in commandFactor
Settling with power - encounteredPilot in command

Analysis

The pilot reported that he was the pilot of the second helicopter in a flight of two helicopters landing at the Arlington park race track's parking lot. As he approached the landing zone, he got too close to the lead helicopter. He slowed the helicopter to almost a hover and then tried to make a steep approach to the zone. He reported that his airspeed was too slow and the helicopter went into settling with power and landed hard.

Factual narrative

On August 12, 1995, at 1025 central daylight time, a Bell-47, N4032G, operated by Clark Enviromental Misquito Management, sustained substantial damage as a result of a hard landing. The helicopter was going to be used as a static display aircraft at the Arlington Park Race Track, located in Arlington Heights, Illinois. The commercial pilot and one passenger received minor injuries. The 14 CFR Part 91 flight departed the Clarke Heliport en route to the Arlington Park Race Track. Visual meteorological conditions prevailed and a VFR flight plan was filed.

The pilot reported that he was the pilot of the second helicopter in a flight of two helicopters landing at the Arlington Park Race Track's parking lot. As he approached the landing zone, he got too close to the lead helicopter. He slowed the helicopter to almost a hover and then tried to make a steep approach to the zone. He reported that his airspeed was too slow and the helicopter went into settling with power. The helicopter landed hard on the pavement.

Aircraft

Registration
N4032G
Reported as
Bell 47
Category
Helicopter
Serial number
7618
Airframe hours
7,491
Engine
Lycoming VO-540-B1B3, 285 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Clark Enviromental Mosquito
Airworthiness certificate
Special, Restricted (Special); Standard, Normal
Last inspection
Annual · May 26, 1995 · 87 hours before
Departed
LL95 · Clarke Heliport, IL
Flight plan
VFR

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
49
Certificate
Commercial
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
1,382 total · 134 in this make and model · 50 in the last 90 days · 24 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 8 knots
Visibility
10 statute miles
Lowest ceiling
15,000 ft broken
Temperature
82 °F
Altimeter
29.00 inHg
Observed at
PWK, 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 N4032G · 1

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