NYC85FA088

NTSB accident investigation · Lake LA-4-200 · Swanton, VT · March 25, 1985

Accident · Serious injuriesField investigationFinal report
Date
March 25, 1985, 12:00 local (17:00 UTC)
Place
Swanton, VT
Injuries
1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N6024VLake LA-4-200
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850325011949A
Case key
35800

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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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.

Airframe/component/system failure/malfunctionCruise - normal
Flt control syst,elevator control - frozenCause
Weather condition - temperature extremesFactor
Ice/frost removal from aircraft - improperPilot in commandCause
Loss of control - in flightApproach - vfr pattern - final approach
Flt control syst,elevator control - frozenCause
Hydraulic system - not possiblePilot in command
Weather condition - gustsFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

During normal cruise flt the plt became unable to move the elevator control. The flt was continued to the planned destination using elevator trim for pitch control. On final approach to the rwy the acft was caught by a wind gust & pitched nose down. The plt was unable to control the descent using elevator trim & undershot the rwy. Examination of the wreckage revealed solid ice formations in the hull encasing the elevator control push-pull rod. The pilot stated he was unable to move the elevator control during preflight. External heat was applied, control movement was possible & the acft made a normal takeoff.

Aircraft

Registration
N6024V
Reported as
Lake LA-4-200
Category
Airplane
Serial number
777
Airframe hours
57,045
Engine
Lycoming IO-360-A1B, 200 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Livingston Mulligan
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 1, 1984 · 1,845 hours before
Departed
Avon, NY
Destination
1B7 · Swanton, VT
Airport
1B7 · Franklin Co., runway 1, 3,000 × 60 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
57
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,078 total · 572 in this make and model · 937 as pilot in command · 4 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 20 knots, gusting 30
Visibility
45 statute miles
Lowest ceiling
None
Temperature
30 °F, dew point 5 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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