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NTSB Report
January 10, 1989 · Cessna 185F · N6420E
Juneau, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 10, 1989
Injury Outcomes
No injuries (2 uninjured)
Location
Juneau, AK
Aircraft
Cessna 185F
Tail Number
N6420E
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA89LA032
FAR 135 FLT WAS DIVERTED TO REMOTE STRIP TO PICK UP ADDITIONAL PASSENGERS. THE DISPATCHER WAS NOT AWARE THAT THE RUNWAY WAS COVERED BY 4 FT OF SNOW UNTIL THE ACFT WAS BEYOND RADIO RANGE. THE PLT ASSUMED THAT THE RWY HAD BEEN PLOWED AS IT WAS IN PREVIOUS WINTERS. THE BOX CANYON CONDITION OF THE SURROUNDING TERRAIN PRECLUDED THE PLT FROM OVER FLYING THE RWY TO CHECK ITS CONDITION. ON APPROACH THE RWY APPEARED TO BE A NORMAL SNOW PACKED SURFACE. THE PLT LANDED THE AMPHIB FLOAT ACFT WITH THE LANDING GEAR DOWN AND THE AIRPLANE NOSED OVER DURING THE LANDING.
NTSB Probable Cause
THE MISJUDGEMENT OF THE RUNWAY CONDITIONS ON THE PART OF THE PILOT PRIOR TO LANDING. CONTRIBUTING TO THE ACCIDENT WERE DEEP SNOW ON THE RUNWAY, BOX CANYON CONFIGURATION OF THE AREA PRECLUDING RUNWAY OVERFLIGHT, MARGINAL WEATHER/LIGHT CONDITIONS FOR ASSESSING THE RUNWAY STATUS AND FAILURE ON THE PART OF COMPANY DISPATCH PERSONNEL TO ACQUIRE AND PROVIDE THE PILOT WITH THE RUNWAY CONDITIONS BEFORE DIVERTING THE FLIGHT TO THE LOCATION OF THE MISHAP.
Full Narrative
FAR 135 FLT WAS DIVERTED TO REMOTE STRIP TO PICK UP ADDITIONAL PASSENGERS. THE DISPATCHER WAS NOT AWARE THAT THE RUNWAY WAS COVERED BY 4 FT OF SNOW UNTIL THE ACFT WAS BEYOND RADIO RANGE. THE PLT ASSUMED THAT THE RWY HAD BEEN PLOWED AS IT WAS IN PREVIOUS WINTERS. THE BOX CANYON CONDITION OF THE SURROUNDING TERRAIN PRECLUDED THE PLT FROM OVER FLYING THE RWY TO CHECK ITS CONDITION. ON APPROACH THE RWY APPEARED TO BE A NORMAL SNOW PACKED SURFACE. THE PLT LANDED THE AMPHIB FLOAT ACFT WITH THE LANDING GEAR DOWN AND THE AIRPLANE NOSED OVER DURING THE LANDING.
Flight
Event TypeAccident
Event Time10:30 AKST
Nearest AirportSnettisham (0nm N)
Runway36
Runway Length2500 ft
Runway Width100 ft
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 185F
Tail NumberN6420E
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-D · Reciprocating · 300
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 38 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind135° @ 20 kt, gusting 25 kt
Visibility2 sm
CeilingOvercast 1500 ft
Temperature / Dew Point30 C / 0 C
Altimeter0
Weather SourcePILO