SEA93FA091

NTSB accident investigation · Lake LA-4-200 · Gold Bar, WA · April 4, 1993

Accident · FatalField investigationFinal report
Date
April 4, 1993, 16:30 local (23:30 UTC)
Place
Gold Bar, WA
Injuries
4 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N39375Lake LA-4-200
Weather
Visual (VMC) · Day
Status
Completed · report March 25, 1994
Report
Approved by Office Director
FAA report
19930404010869A
Case key
42937

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's failure to maintain adequate airspeed while maneuvering for a water landing.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightManeuvering
Airspeed - not maintainedPilot in commandCause
Stall - inadvertentPilot in command
In flight collision with terrain/waterManeuvering
Terrain condition - water

Analysis

The airplane was found submerged in 40 ft of water and approximately 40 ft from shore on the NE end of lake isabel. Impact damage was indicative of a near-vertical nose-down attitude at impact. The mountainous terrain rises rapidly on all sides of the lake, and the lake narrows to approximately 530 ft wide at the NE end. The pilot's flight instructor stated that the pilot had been taught to circle the lake a few times before landing to assess the water conditions.

Aircraft

Registration
N39375
Reported as
Lake LA-4-200
Category
Airplane
Serial number
525
Airframe hours
1,595
Engine
Lycoming IO-360-A1B, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Helgeson, Robert C.
Registered owner
Helgeson, Robert C.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 8, 1992 · 23 hours before
Departed
Lake Stevens, WA

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
40
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
393 total · 96 in this make and model · 350 as pilot in command · 13 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N39375 · 1

Matched to the same aircraft by N-number and date.