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NTSB Report
August 14, 2023 · Cessna U206G · N4891Z
Skwentna, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 14, 2023
Injury Outcomes
No injuries (5 uninjured)
Location
Skwentna, AK
Aircraft
Cessna U206G (1980)
Tail Number
N4891Z
Operator
Rust S Flying Service
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC23LA063
While landing on a river and coming off the float step, the airplane’s float contacted an undetected submerged gravel bar in shallow water. The airplane pivoted, nosed over, and came to rest inverted. The airplane sustained substantial damage to the vertical stabilizer and rudder. 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 airplane’s float contacted an undetected submerged gravel bar during landing which resulted in a nose over.
Full Narrative
While landing on a river and coming off the float step, the airplane’s float contacted an undetected submerged gravel bar in shallow water. The airplane pivoted, nosed over, and came to rest inverted. The airplane sustained substantial damage to the vertical stabilizer and rudder. 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 Time10:20 AKDT
Nearest Airport0nm
Flight Plan FiledCvfr
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna U206G
Tail NumberN4891Z
Aircraft CategoryAir
DamageSubstantial
OperatorRust S Flying Service
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-F · Reciprocating · 300
Seats6
People & Injuries
Injury SummaryNo injuries (5 uninjured)
Fatal0
Serious0
Minor0
Uninjured5
Total5
Crew 1Age 66 · First Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
CeilingOvercast 4000 ft
Temperature / Dew Point58 / 0 C
Altimeter29.88 inHg
Weather SourcePILO