DEN84FA102

NTSB accident investigation · Bell 206B-III · Coalville, UT · February 25, 1984

Accident · FatalField investigationFinal report
Date
February 25, 1984, 10:00 local (17:00 UTC)
Place
Coalville, UT
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Landing
Aircraft
N16803Bell 206B-III
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840225062699A
Case key
16201

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.

Roll overLanding - flare/touchdown
Landing gear,skid assembly - looseFactor
Aircraft preflight - inadequatePilot in commandFactor
Landing gear,skid assembly - improper
Maintenance,installation - improperOther maintenance personnel
Maintenance,inspection - inadequateCompany maintenance personnel
Terrain condition - snow coveredFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Terrain condition - softFactor
Terrain condition - weak iceFactor

Analysis

The helicopter was equipped with 'bear paws'. Snowshoe-like devices on the skids to distribute weight on soft surfaces. The bear paws on this acft rotated freely around the skids, not tightened down as per design spec. Also, bear paws are not approved for American acft by the FAA. This helicopter landed on what the pilot thought was a firm landing surface but was actually 5 ft of snow covered with a thin crust of ice. A passenger that the pilot had deboarded earlier about 900 ft down the mountain, stated that he saw the helicopter roll over on its right side aprx 5 mins after he left the aircraft. This individual stated that the pilot did not shut down the helicopter after he was left off. During the rollover, one blade of the rotor sliced through the cockpit it departed the acft.

Aircraft

Registration
N16803
Reported as
Bell 206B-III
Category
Helicopter
Serial number
2225
Airframe hours
4,601
Engine
Allison 250-C20B, 420 horsepower, turbo shaft
Damage
Destroyed
Flight
Part 135
Operator
Wiebe Gortmaker, doing business as Pegasus Helicopters Inc
Registered owner
Redstone Investments, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · December 6, 1983 · 259 hours before
Departed
Wanship, UT

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
39
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
3,674 total · 3,152 in this make and model · 3,610 as pilot in command · 114 in the last 90 days · 114 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 4 knots
Visibility
1 statute miles
Lowest ceiling
4,000 ft overcast
Temperature
34 °F, dew point 28 °F
Altimeter
29.00 inHg
Observed at
SLC, 38 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.