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NTSB Report
September 6, 2013 · Lake LA-4 · N1136L
Monticello, KY
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
September 6, 2013
Injury Outcomes
No injuries (2 uninjured)
Location
Monticello, KY
Aircraft
Lake LA-4 (1964)
Tail Number
N1136L
Operator
Monticello Aircraft
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ERA13CA413
According to the pilot, he made a pass over the lake in search of a landing site with the least amount of boat traffic. After an uneventful water landing, he began to water taxi the airplane; however, his passenger and he noticed a large wave approaching at a 45 degree angle from the port side of the airplane. As the wave impacted the airplane’s pontoons, the pilot encountered a strong left rudder deflection and the airplane nosed over into the water. A postaccident examination by a Federal Aviation Administration inspector revealed substantial damage to the airplane’s nose section. The pilot reported no preaccident mechanical malfunctions or failures of the airplane that would have precluded normal operation.
NTSB Probable Cause
Environmental issues-Conditions/weather/phenomena-(general)-(general)-Contributed to outcome - C
Full Narrative
According to the pilot, he made a pass over the lake in search of a landing site with the least amount of boat traffic. After an uneventful water landing, he began to water taxi the airplane; however, his passenger and he noticed a large wave approaching at a 45 degree angle from the port side of the airplane. As the wave impacted the airplane’s pontoons, the pilot encountered a strong left rudder deflection and the airplane nosed over into the water. A postaccident examination by a Federal Aviation Administration inspector revealed substantial damage to the airplane’s nose section. The pilot reported no preaccident mechanical malfunctions or failures of the airplane that would have precluded normal operation.
Flight
Event TypeAccident
Event Time18:00 EDT
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftLake LA-4
Tail NumberN1136L
Aircraft CategoryAir
DamageSubstantial
OperatorMonticello Aircraft
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360 A1A · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 69 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 4 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter30.13 inHg
Observation Time21:56
Weather SourceWFAC