ANC99TA029

NTSB accident investigation · Bell 206L-1 · Barrow, AK · February 24, 1999

Accident · Minor injuriesFinal report
Date
February 24, 1999, 17:30 local (21:30 UTC)
Place
Barrow, AK
Injuries
3 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N785SRBell 206L-1
Weather
Visual (VMC) · Day
Status
Completed · report April 20, 2000
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19990224001729A
Case key
45799

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 misjudged flare while landing. Factors associated with the accident were whiteout conditions, and the snow-covered terrain.

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 encounter with weatherLanding
Weather condition - whiteoutFactor
Hard landingLanding
Flare - misjudgedPilot in commandCause
Terrain condition - snow coveredFactor
Roll overLanding

Analysis

The pilot reported that the public use helicopter was being utilized to search for a missing person. He said that shortly after initiating the search, he was able to locate the missing person on a frozen lake. He indicated that as he approached the lake for landing, he became disoriented due to whiteout conditions. The helicopter struck the frozen lake, and rolled onto its right side. The helicopter sustained substantial damage to the fuselage, tail boom, and drive train components. The closest official weather observation station is Barrow, located about 4 nautical miles north of the accident site. On February 24, at 1753, an Aviation Routine Weather Report (METAR) was reporting in part: wind, 070 degrees at 13 knots; visibility, 3 miles with light snow; clouds, 2,400 feet scattered, 3,800 feet broken, 10,000 feet overcast; temperature, minus 7 degrees F; dew point, minus 13 degrees F; altimeter, 29.81 inHg. The pilot reported that there were no preaccident mechanical anomalies with the helicopter.

Factual narrative

On February 24, 1999, about 1730 Alaska standard time, a high skid equipped Bell 206L-1 helicopter, N785SR, sustained substantial damage during landing, about 4 miles south of Barrow, Alaska. The helicopter was being operated as a public use, visual flight rules (VFR) local area search and rescue flight under Title 14, CFR Part 91, when the accident occurred. The helicopter was registered to the North Slope Borough, and was operated by the North Slope Borough Search and Rescue of Barrow. The airline transport pilot and the two passengers aboard received minor injuries. Visual meteorological conditions prevailed, and VFR company flight following procedures were in effect.

In his written statement to the National Transportation Safety Board, the pilot reported that the helicopter was being utilized to search for a missing person. He said that shortly after initiating the search, he was able to locate the missing person on a frozen lake. He indicated that as he approached the lake for landing, he became disoriented due to whiteout conditions. The helicopter struck the frozen lake, and rolled onto its right side.

The helicopter sustained substantial damage to the fuselage, tail boom, and drive train components.

The closest official weather observation station is Barrow, located about 4 nautical miles north of the accident site. On February 24, at 1753, an Aviation Routine Weather Report (METAR) was reporting in part: wind, 070 degrees at 13 knots; visibility, 3 miles with light snow; clouds, 2,400 feet scattered, 3,800 feet broken, 10,000 feet overcast; temperature, minus 7 degrees F; dew point, minus 13 degrees F; altimeter, 29.81 inHg.

The pilot reported that there were no preaccident mechanical anomalies with the helicopter.

Aircraft

Registration
N785SR
Reported as
Bell 206L-1
Category
Helicopter
Serial number
45526
Airframe hours
4,396
Engine
Allison 250-C30P, 658 horsepower, turbo shaft
Damage
Substantial damage
Flight
Public aircraft · Part 91
Registered owner
North Slope Borough
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 24, 1998 · 50 hours before
Departed
BRW · AK
Flight plan
Company 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
Certificates
Flight engineer, Airline transport
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Helicopter
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
17,000 total · 314 in this make and model · 16,000 as pilot in command · 99 in the last 90 days · 27 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 13 knots
Visibility
3 statute miles
Lowest ceiling
3,800 ft broken
Temperature
-8 °F, dew point -0 °F
Altimeter
29.00 inHg
Observed at
PAB

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.