CHI03LA061

NTSB accident investigation · Cessna 172 · Lakeville, MN · January 31, 2003

Accident · No injuriesLimited investigationFinal report
Date
January 31, 2003, 17:02 local (23:02 UTC)
Place
Lakeville, MN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N670CSCessna 172
Weather
Visual (VMC) · Dusk
Status
Completed · report November 25, 2003
Report
Approved by Office Director
Parties
FAA-Minneapolis FSDO
FAA report
20030131001539A
Case key
56436

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 inadequate removal of ice and snow during the airplane preflight, and the subsequent loss of control due to the airplane being covered with ice.

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 flightTakeoff
Aircraft preflight - inadequatePilot in commandCause
Ice/frost removal from aircraft - inadequatePilot in commandCause
Flight control surfaces/attachments - iceCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - open field

Analysis

The airplane sustained substantial damage during a forced landing to a field located on airport property. The airplane was departing when the forced landing was initiated. The pilot reported that he performed a preflight inspection, and cleaned the snow and ice off the top of the airplane. He reported that the airplane accelerated normally and he climbed to 500 feet. He reported that he saw some geese and he turned to avoid them, but he "did not recall if he hit them." He reported the airplane began to "fall from the sky," and he turned back to the runway, but the airplane started to stall. He landed the airplane in a field next to the runway. A witness, who arrived at the scene of the accident about 35 minutes after the accident, reported the airplane was located about 800 feet to the south of the runway. The witness reported, "There was lots of ice and snow on top of the wings, also the tail section." He reported the "elevators, ailerons, flaps were loaded with ice." He reported that he observed the airplane the next morning during daylight. He reported, "It was obvious that there was heavy ice on the topside of all surfaces of the aircraft and it was sticking solid." A second witness reported that he observed that the leading edges of the wings were clean, but there was a layer of "hard, icy stuff aft of the leading edges." The second witness reported that it had been snowing with freezing drizzle the last couple of days, but that there had been no freezing drizzle the night before he observed the airplane. An inspection of the airplane revealed no preexisting anomalies.

Factual narrative

On January 31, 2003, at 1702 central standard time, a Cessna 172, N670CS, sustained substantial damage during a forced landing to a field located on airport property at Airlake Airport (LVN), Lakeville, Minnesota. The airplane was departing from runway 30 (4,263 feet by 75 feet, asphalt) when the forced landing was initiated. The pilot was not injured. The 14 CFR Part 91 business flight was departing LVN en route to Eppley Airfield (OMA), Omaha, Nebraska. Visual meteorological conditions prevailed. An instrument flight plan was filed.

The pilot reported he arrived at the airport on Friday about 1600. He reported that he performed a preflight inspection, and cleaned the snow and ice off the top of the airplane. At 1645, he taxied out for takeoff, but was unable to obtain a takeoff clearance. He shut down the airplane and re-filed an instrument flight plan using his cellular telephone with Princeton FSS. At 1700, he departed on runway 30. He reported that the airplane accelerated normally and he climbed to 500 feet. He reported that he saw some geese and he turned to avoid them, but he "did not recall if he hit them." He reported the airplane began to "fall from the sky," and he turned back to the runway, but the airplane started to stall. He landed the airplane in a field next to the runway.

A witness reported he arrived at the scene of the accident on Friday about 1735. He reported the airplane was located about 800 feet to the south of the runway. He reported, "There was lots of ice and snow on top of the wings, also the tail section." He reported the "elevators, ailerons, flaps were loaded with ice." He reported that he observed the airplane the next morning during daylight. He reported, "It was obvious that there was heavy ice on the topside of all surfaces of the aircraft and it was sticking solid." Loose grass and dirt was found on top of the ice. He reported "only the leading edges looked clean." He reported that there had been an ice and snowstorm the night prior to the accident.

Another witness reported that on Saturday morning he observed that the leading edges of the wings were clean, but there was a layer of "hard, icy stuff aft of the leading edges." He reported that it had been snowing with freezing drizzle the last couple of days, but that there had been no freezing drizzle on Friday night.

An inspection of the airplane revealed no preexisting anomalies.

Aircraft

Registration
N670CS
Reported as
Cessna 172
Category
Airplane
Serial number
172S9098
Engine
Lycoming IO-360-L2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Shane Siefken
Registered owner
Dl3s LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 19, 2002
Departed
LVN · Lakeville, MN
Destination
OMA · Omaha, NE
Flight plan
IFR
Airport
LVN · Airlake Airport, runway 30, 4,263 × 75 ft, asphalt

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
26
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
4,686 total · 260 in this make and model · 398 as pilot in command · 190 in the last 90 days · 35 in the last 30 days

Weather

Conditions
Visual (VMC) · Dusk
Wind
320° at 5 knots
Visibility
3 statute miles
Lowest ceiling
1,100 ft overcast
Temperature
32 °F, dew point 28 °F
Altimeter
29.96 inHg
Observed at
LVN

Docket · 3

The files NTSB released with the investigation on September 11, 2003, on NTSB’s docket system: statements, records, photos and specialists’ reports. 687 KB in all.

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 N670CS · 1

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