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NTSB Report
November 28, 2010 · Aviat Aircraft A-1B · N55HU
North Bend, WA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
November 28, 2010
Injury Outcomes
No injuries (1 uninjured)
Location
North Bend, WA
Aircraft
Aviat Aircraft A-1B
Tail Number
N55HU
Operator
Robert Londo
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR11CA065
The pilot reported that during a local area personal proficiency flight, he decided to make a full-stop landing on the snow-covered runway of a remote state airstrip. Although he overflew the strip before landing, because he had not predetermined the actual depth of the snow on the surface, during the landing roll the airplane sunk deep enough into the snow that it decelerated at a rate that resulted in it nosing over onto its back. The pilot did not report any airplane malfunctions or anomalies, and he further stated that the accident could have been prevented if he had not landed without first acquiring an "exact verification" of the snow depth on the runway surface.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Aircraft capability-(general)-Capability exceeded - C
Full Narrative
The pilot reported that during a local area personal proficiency flight, he decided to make a full-stop landing on the snow-covered runway of a remote state airstrip. Although he overflew the strip before landing, because he had not predetermined the actual depth of the snow on the surface, during the landing roll the airplane sunk deep enough into the snow that it decelerated at a rate that resulted in it nosing over onto its back. The pilot did not report any airplane malfunctions or anomalies, and he further stated that the accident could have been prevented if he had not landed without first acquiring an "exact verification" of the snow depth on the runway surface.
Flight
Event TypeAccident
Event Time15:00 PST
Nearest AirportBandera State (0nm)
Runway08
Runway Length2344 ft
Runway Width200 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAviat Aircraft A-1B
Tail NumberN55HU
Aircraft CategoryAir
DamageSubstantial
OperatorRobert Londo
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O&VO-360 SER · Reciprocating · 180
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 53 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingOvercast 1500 ft
Temperature / Dew Point37 C / 0 C
Altimeter0
Weather SourcePILO