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ASN Wikibase Occurrence # 45274
Last updated: 31 December 2020
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Type:Silhouette image of generic BE36 model; specific model in this crash may look slightly different
Beechcraft A36 Bonanza
Registration: N7253Z
C/n / msn: E-2279
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Sparta, IL -   United States of America
Phase: Approach
Departure airport:Duluth, MN (DLH)
Destination airport:Sparta, IL (SAR)
Investigating agency: NTSB
The airplane encountered moderate icing conditions during cruise flight and impacted trees and terrain while the pilot attempted to divert to an alternate airport. The pilot reported to air traffic control (ATC), on several occasions, that the airplane had accumulated structural ice. The pilot passed several airports before ultimately diverting to a nearby airport because of degraded aircraft performance. The pilot told ATC that, "we're gonna need vectors...we're not gonna make it up there, we're already in stall mode, for this airplane is full of ice." The airplane impacted trees and terrain about 4.3 nautical miles south of the airport. The accident occurred at night in instrument meteorological conditions. An AIRMET for icing conditions had been issued for occasional moderate rime and mixed icing while in clouds and precipitation below 15,000 feet msl. Several PIREPs indicated moderate rime and mixed icing between 2,500 and 6,000 feet msl. The airplane was not equipped with deicing equipment and was not approved for flight into known icing conditions. The aircraft's pilot operating handbook states that, "Flight into icing conditions is prohibited."

Probable Cause: The pilot's inadequate in-flight planning/decision by his flight into known icing conditions which resulted in airframe icing and degraded aircraft performance until the onset of a stall.



Revision history:

28-Oct-2008 00:45 ASN archive Added
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
08-Dec-2017 18:26 ASN Update Bot Updated [Source, Narrative]

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