ANC85FA184

NTSB accident investigation · de Havilland DHC-2 · Merrill Pass, AK · September 26, 1985

Accident · FatalField investigationFinal report
Date
September 26, 1985, 12:30 local (20:30 UTC)
Place
Merrill Pass, AK
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N5317Gde Havilland DHC-2
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19850926048169A
Case key
4429

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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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
In-flight planning/decision - improperPilot in commandCause
Improper use of procedurePilot in commandFactor
Flight into known adverse weather - continuedPilot in commandCause
Weather condition - turbulenceFactor
Weather condition - snowFactor
Weather condition - obscurationFactor
In flight collision with terrain/waterManeuvering
Terrain condition - mountainous/hillyCause
Altitude - not maintainedPilot in commandCause

Analysis

The acft collided with terrain in a mountain Pass at an elevation of 3600 ft MSL. The plt obtained a wx briefing at 1329 gmt on 9/26/86 at which time Merrill Pass was forecast to be closed by 1100 adt due to deteriorating wx. The last radio communication with the acft was at 1803 gmt when contact was made with mcgrath fss. At this time the plt made a plt report stating the wx at Merrill Pass was marginal; 2 miles vis with snow and occasional moderate turbulence. The wreckage was located on 6/29/85 and indicated the acft contacted the terrain in a relatively level attitude with considerable airspeed.

Aircraft

Registration
N5317G
Reported as
de Havilland DHC-2
Category
Airplane
Serial number
617
Airframe hours
7,640
Engine
P&W R-985-14B, 450 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Operator
Willow Air Service, doing business as Willow Air Service
Registered owner
Willow Air Service
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 6, 1985 · 95 hours before
Departed
Hidden River, AK
Destination
Z22 · Willow, 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
27
Certificate
Commercial
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
4,900 total · 1,200 in this make and model · 4,650 as pilot in command · 50 in the last 90 days · 20 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
30 statute miles
Lowest ceiling
4,500 ft overcast
Temperature
37 °F

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 N5317G · 1

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