CESSNA 340A

Waukesha, WI — February 25, 2017

Event Information

DateFebruary 25, 2017
Event TypeACC
NTSB NumberCEN17CA114
Event ID20170301X20646
LocationWaukesha, WI
CountryUSA
Coordinates43.04111, -88.23695
AirportWaukesha County Airport
Highest InjuryNONE

Aircraft

MakeCESSNA
Model340A
CategoryAIR
FAR Part091
Aircraft DamageSUBS

Conditions

Light ConditionDUSK
WeatherIMC

Injuries

Fatal0
Serious0
Minor0
None1
Total Injured0

Event Location

Probable Cause

The pilot’s decision to fly in in conditions conducive to structural icing and her subsequent failure to maintain airplane control during the instrument approach.

Full Narrative

Prior to the positioning flight, the pilot monitored the weather and noticed the weather conditions were deteriorating near the time of the planned departure. The weather conditions included low visibility, freezing drizzle, and mist. In an effort to reduce the time in the deteriorating weather conditions, the pilot performed some before takeoff checks while the airplane was in the hangar. During the pilot's "haste" to preflight and takeoff, she inadvertently selected the wrong switch for windshield heat. While on the instrument approach to the runway in night conditions, the pilot had no forward visibility due to ice accumulation on the windshield. The pilot executed a missed approach and contacted an instructor pilot at the departure airport to confirm the location of the windshield heat switch. The pilot then activated the windshield heat switch and enough ice had melted for the pilot to conduct another approach. During the approach, the pilot increased the airspeed due to "carrying a lot of ice." On short final approach, the airplane descended below the glide path due to the ice accumulation. Subsequently, the airplane contacted the terrain short of the runway, and "skipped" onto the runway. The airplane came to rest upright and off the runway surface. Examination of the airplane revealed substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

About This NTSB Record

This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.

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