ANC82FA035

NTSB accident investigation · Sud SA 318C · Near Savoonga, AK · April 15, 1982

Accident · FatalField investigationFinal report
Date
April 15, 1982, 14:15 local (22:15 UTC)
Place
Near Savoonga, AK
Injuries
2 fatal, 1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9367Sud SA 318C
Weather
Instrument (IMC) · Day
Status
Completed · report April 15, 1983
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Case key
71926

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.

In flight encounter with weatherCruise - normal
Weather condition - low ceilingFactor
Weather condition - high windFactor
Weather condition - gustsFactor
Weather condition - snowFactor
Vfr flight into imc - continuedPilot in commandCause
Overconfidence in personal abilityPilot in commandFactor
Loss of control - in flightCruise
DelayedPilot in commandCause
Spatial disorientationPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - snow coveredFactor
Weather condition - temperature extremes

Analysis

At 0746 LCL time, the plt activated his VFR flt plan for a round robin flt from nome, AK to Savoonga, NE cape, Savoonga, se cape, Savoonga & back to nome. After arriving at Savoonga, the helicopter was refueled. According to svrl villagers, the wx at that time was poor, vis 1 to 2 mi with blowing snow, wind from the north at 25, gstg 30 KTS. Bfr departing, there was a discussion concerning the suitability of the wx, but the plt was convinced he could complete the mission. After departing, the plt was flwg the shoreline when the vis bgn decreasing. The surviving pax rprtd that the plt reversed course, but the vis contd to decrease til he (the pax) could not see the gnd. He rprtd that the plt bgn manipulating the controls in an unusual manner & the helicopter bgn mvg left & right, up & down and all around, then crashed. There were indications the helicopter impacted while mvg rearward & to the right. Estimate 285 lbs ovr themax gross wt lmt. Srch not initiated til 12 hr flt plan expired, found nxt morning, ELT signal. Hypothermia, frost bite.

Aircraft

Registration
N9367
Reported as
Sud SA 318C
Category
Helicopter
Serial number
2168
Engine
Turbomeca ASTAZOU IIA, 523 horsepower, turbo shaft
Damage
Substantial damage
Flight
Public aircraft · Part 91
Operator
Evergreen Helicopters Of Alask
Registered owner
Evergreen Helicopters Of Alask
Departed
Savoonga, AK
Destination
Nome, AK
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
41
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
2,618 total · 295 in this make and model · 2,454 as pilot in command · 98 in the last 90 days · 14 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
360° at 25 knots
Temperature
36 °F
Altimeter
29.00 inHg