CEN12LA060

NTSB accident investigation · Cessna 180 · Eau Claire, WI · November 12, 2011

Accident · No injuriesLimited investigationFinal report
Date
November 11, 2011, 19:00 local (Nov 12, 2011, 01:00 UTC)
Place
Eau Claire, WI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N3606CCessna 180
Defining event
Enroute-cruise: Electrical system malf/failure
Weather
Visual (VMC) · Night
Status
Completed · report May 21, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20111111027119A
Case key
82283

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 disorientation during a night flight, which resulted in an off-airport landing, and his inadequate directional control during the landing roll. Contributing to the accident was the loss of the airplane’s electrical system power.

Findings · 5

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Light condition: darkEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeCessna 180: 1 caseAll aircraft: 448 cases
Object/animal/substance: poleEnvironmental issues › Physical environment · Contributed to outcomeCessna 180: 1 caseAll aircraft: 142 cases
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 180: 65 casesAll aircraft: 9,295 casesProbable cause
Electrical power systemAircraft › Aircraft systems · FailureCessna 180: 1 caseAll aircraft: 48 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

During a personal sightseeing flight, the pilot landed the airplane at a controlled airport without contacting the control tower. According to the manager of a fixed base operation at the controlled airport, the pilot asked what airport he had landed at and seemed unsure of the direction toward his intended destination. Although the manager reminded him to do so, the pilot did not contact the control tower during his departure. While en route, it became dark, and the airplane experienced a loss of electrical power, rendering the cockpit "virtually black." Although the sky was clear and the visibility was 10 miles, the pilot was unable to locate a diversion airport after an hour of searching. He elected to land on a road, and the airplane collided with a pole. The pilot reported that he lost directional control during the landing roll. A postaccident examination revealed that the airplane’s battery had a low power state. The pilot reported no mechanical malfunctions other than the loss of electrical power.

Factual narrative

On November 11, 2011, about 1900 central standard time, a Cessna 180, N3606C, impacted a pole during a precautionary landing on a highway near Eau Claire, Wisconsin. The pilot, the sole occupant, was not injured. The airplane sustained substantial damage. The airplane was registered to and operated by the private pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Night visual flight rules conditions prevailed at the time of the accident, which operated without a flight plan. The flight departed the Chippewa Valley Regional Airport (EAU), near Eau Claire, Wisconsin, about 1640, and was destined for the Crystal Airport (MIC), near Minneapolis, Minnesota. The pilot reported that he departed MIC about 1430 to 1500 for a sightseeing flight along the St. Croix River to La Crosse, Wisconsin. He stated that he did not intend to land at La Crosse. The pilot added he stopped to refuel at Rice lake, Wisconsin, before he started his return to MIC when dusk conditions began. While en route during the return flight, the airplane had a loss of electrical power rendering the cockpit “virtually black.” The pilot used a flashlight to illuminate the cockpit as he looked for a diversion airport for over an hour. After not finding a nearby airport, he elected to perform a precautionary landing on roadway. The pilot reported that the “tailwheel castored”, it hit an obstacle, “and did a fair amount of damage to the airplane”. The pilot listed no other mechanical malfunctions in his report other than the loss of electrical power. The pilot was asked if he flown anywhere else and he reported that he did not land at any other airport other than Rice Lake. However, the manager of the fixed base operator (FBO) at EAU reported that the accident airplane had landed there around 1620. The pilot asked an FBO employee which airport this was. The pilot was told he was at EAU. According to the manager, the pilot said that he had originated from the La Crosse area and that he was trying to get to Stillwater, Minnesota. The FBO staff pointed out the general direction toward Stillwater. According to the FBO manager, the pilot seemed shocked when he discovered that there was a control tower at the airport and realized that he had landed without any radio communication. According to the manager, the pilot said that his airplane’s engine was flooded. He could not get his engine started and accepted the manager’s assistance to get the airplane started. The pilot asked which direction was north and the manager pointed west and replied that west was the direction to Stillwater. The manager stated that he reminded the pilot to contact the control tower and depart to the west. The pilot taxied the airplane out about 1640 without contacting the control tower and the next time the manager heard about the pilot was after the pilot landed the airplane on the highway. A Federal Aviation Administration inspector examined the wreckage on-scene and confirmedthe substantial damage to the left wing. A subsequent examination revealed that the airplane’s battery had a low power state. At 1956, the recorded weather at EAU was: wind 190 degrees at 4 knots; visibility 10 statute miles; sky condition clear; temperature 3 degrees C; dew point -3 degrees C; altimeter 29.62 inches of mercury.

Aircraft

Registration
N3606C
Reported as
Cessna 180
Category
Airplane
Serial number
31104
Airframe hours
940
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 10, 2010
Departed
EAU · Eau Claire, WI
Destination
MIC · Minneapolis, MN
Airport
EAU · Chippewa Valley Regional

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
68
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Unknown
Last flight review
August 6, 2010
Seat
Left

Weather

Conditions
Visual (VMC) · Night
Wind
190° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
37 °F, dew point 27 °F
Altimeter
29.62 inHg
Observed at
EAU

Docket · 4

The files NTSB released with the investigation on April 30, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.4 MB 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 N3606C · 1

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