ANC90LA095

NTSB accident investigation · Bell B-47G2A · Dutch Harbor, AK · June 24, 1990

Accident · No injuriesLimited investigationFinal report
Date
June 23, 1990, 23:30 local (Jun 24, 1990, 07:30 UTC)
Place
Dutch Harbor, AK
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N8495EBell B-47G2A
Weather
Instrument (IMC) · Dusk
Status
Completed · report November 9, 1992
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Case key
5387

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 in commands continued VFR flight into IMC conditions and his failure to maintain altitude while manuevering to avoid 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 weatherCruise
Weather condition - fog
Vfr flight into imc - continuedPilot in commandCause
In flight collision with terrain/waterManeuvering - turn to reverse direction
Altitude - not maintainedPilot in commandCause
Terrain condition - water

Analysis

The pilot-in-command received a weather briefing which recommended against VFR flight. He departed for his destination and activated his flight plan. The flight service station with which he activated his flight plan closed prior to N8495E reaching its destination, but the flight information was passed on to king salmon flight service station. The air traffic specialist at king salmon failed to 'suspense' the flight information on N8495E. This resulted in the lack of any overdue aircraft report or search and rescue. Meanwhile, N8495E was operating in the vicinity of the Dutch Harbor airport while in heavy fog. The pilot-in-command saw a cliff appear in front of the helicopter and he veered away and another cliff appear and as he veered away again the helicopter struck the water and sank.

Aircraft

Registration
N8495E
Reported as
Bell B-47G2A
Category
Helicopter
Serial number
L-2596-31
Airframe hours
3,961
Engine
Lycoming O-435A1E, 240 horsepower, reciprocating
Damage
Destroyed
Flight
Business · Part 91
Operator
James Gilmore
Registered owner
Alaska Antler Products Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 20, 1990 · 11 hours before
Departed
26AK · Cold Bay, AK
Flight plan
VFR
Airport
NONE

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
30
Certificates
Flight instructor, Private, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,200 total · 25 in this make and model · 600 as pilot in command · 30 in the last 90 days · 25 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Dusk
Wind
290° at 8 knots
Visibility
10 statute miles
Lowest ceiling
2,500 ft broken
Temperature
50 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
DUT, 2 nm away

Other investigations on N8495E · 3

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