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ASN Wikibase Occurrence # 152455
Last updated: 19 October 2019
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Date:11-JAN-2013
Time:15:53
Type:Silhouette image of generic BE58 model; specific model in this crash may look slightly different
Beechcraft 58 Baron
Owner/operator:Bottorff Construction Inc
Registration: N36VE
C/n / msn: TH-1957
Fatalities:Fatalities: 4 / Occupants: 4
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:NNE of Maxwell, NE -   United States of America
Phase: Initial climb
Nature:Executive
Departure airport:North Platte, NE (LBF)
Destination airport:York, NE (JYR)
Investigating agency: NTSB
Narrative:
The pilot filed an instrument flight rules flight plan and, about an hour before departure, he obtained a weather briefing, which included an airmen’s meteorological information (AIRMET) for the potential for moderate icing conditions and turbulence below 8,000 ft over the route of flight. About the time the airplane departed, weather conditions worsened with freezing fog, heavy snow fall, and reduced visibility. However, at that time, neither a significant meteorological information (SIGMET) nor a center weather advisory warning of severe icing conditions had been issued. After departure, an air traffic controller cleared the airplane to climb to 9,000 ft mean sea level (msl). When the airplane was about 7,000 ft msl and still climbing, the pilot asked the controller if there were any reports regarding the cloud tops, and the controller responded that there were not. Less than a minute later, radar data showed the airplane descending, and the pilot issued a “mayday” call. Radio and radar contact were then lost. The wreckage was found about 11 miles northeast of the airport. A postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.

Flight crewmembers of two flights inbound to the airport around the time of the accident reported that they encountered freezing rain and severe mixed icing; these conditions were beyond the airplane’s icing certification standards and could have caused increased weight, degraded performance, and unpredictable aerodynamic characteristics. Federal Aviation Administration guidance warns that, when severe icing conditions are encountered, the pilot shall immediately request priority handling to facilitate a route or an altitude change to exit the icing conditions.

Based on the weather information, it is likely that the airplane encountered severe icing conditions about the time of the accident, which resulted in structural icing that exceeded the airplane’s capabilities and resulted in a loss of control. Based on the wreckage distribution, which was consistent with a high-speed impact, and the low visibility present at the time of the accident, it is likely that, after the loss of airplane control, the pilot experienced spatial disorientation; however, there was insufficient evidence to determine the role that spatial disorientation might have played in the accident.

Probable Cause: The pilot’s inadvertent encounter with severe icing conditions, which resulted in structural icing and the subsequent loss of airplane control.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20130111X25405&key=1
https://flightaware.com/live/flight/N36VE

FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=36VE


Revision history:

Date/timeContributorUpdates
11-Jan-2013 22:46 bizjets101 Added
12-Jan-2013 00:52 RoebrtMB Updated [Aircraft type, Location, Nature, Source, Narrative]
12-Jan-2013 01:26 gerard57 Updated [Date]
12-Jan-2013 10:26 Geno Updated [Time, Location, Nature, Source, Narrative]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
28-Nov-2017 14:06 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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