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NTSB Report
May 17, 2023 · Piper PA31 350 · N34WM
Point Thomson, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 17, 2023
Injury Outcomes
No injuries (2 uninjured)
Location
Point Thomson, AK
Aircraft
Piper PA31 350 (1973)
Tail Number
N34WM
Operator
Junipogo
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC23LA036
The pilot reported that while established on an RNAV GPS instrument approach to a remote airport, flat light conditions made it difficult to discern topographical features of the snow-covered terrain below. Prior to reaching the decision height altitude, the pilot said he looked outside for the runway environment, but the flat light condition caused him to spend more time looking outside and he became disorientated. When he looked back at the airplane’s instruments, he noticed the airplane was below the glide path and initiated a go-around maneuver; however, the airplane subsequently impacted snow-covered terrain. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
NTSB Probable Cause
The pilot’s inadvertent descent below the published minimum descent altitude, while operating in flat light conditions, which resulted in controlled flight into terrain.
Full Narrative
The pilot reported that while established on an RNAV GPS instrument approach to a remote airport, flat light conditions made it difficult to discern topographical features of the snow-covered terrain below. Prior to reaching the decision height altitude, the pilot said he looked outside for the runway environment, but the flat light condition caused him to spend more time looking outside and he became disorientated. When he looked back at the airplane’s instruments, he noticed the airplane was below the glide path and initiated a go-around maneuver; however, the airplane subsequently impacted snow-covered terrain. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Flight
Event TypeAccident
Event Time12:22 AKDT
Nearest AirportPoint Thomson Airstrip (0.2nm E)
Flight Plan FiledIFR
Flight Plan ActivatedUnknown
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA31 350
Tail NumberN34WM
Aircraft CategoryAir
DamageSubstantial
OperatorJunipogo
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · TIO-540-J2B · Reciprocating · 360 | Lycoming · LTIO-540-J2B · Reciprocating · 360
Seats5
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 30 · First Class · None
Crew 2Age 47 · Second Class · None
Conditions
ConditionsIMC
LightDaylight
Wind60° @ 6 kt
Visibility1 sm
CeilingBroken clouds 1500 ft
Temperature / Dew Point27 F / 23 F
Altimeter30.21 inHg
Observation Time12:18
Weather SourceWFAC