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ASN Wikibase Occurrence # 148279
Last updated: 30 July 2020
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Date:01-SEP-2012
Time:13:30
Type:Silhouette image of generic L39 model; specific model in this crash may look slightly different
Aero Vodochody L-39C Albatros
Owner/operator:Private
Registration: N139GS
C/n / msn: 432833
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Davenport Municipal Airport - KDVN, Davenport, IA -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Demo/Airshow/Display
Departure airport:Davenport, IA (DVN)
Destination airport:Davenport, IA (DVN)
Investigating agency: NTSB
Narrative:
The accident airplane was one of three airplanes in an airshow performance. After overflying the spectators and while flying away from the flight line, the airplanes executed a “crossover break” maneuver, at the beginning of which the accident airplane was in the left wing position. As planned, the lead airplane would climb while the left wing position airplane would enter a right turn and the right wing position airplane would enter a left turn with adequate longitudinal spacing. During the maneuver, the accident airplane entered the right turn as planned, but then descended and impacted the terrain. A postimpact fire ensued. No evidence of an in-flight collision with either of the other airplanes was observed. Witnesses reported that they did not observe any movement of the airplane's flight control surfaces before the airplane impacted terrain, which would be inconsistent with the pilot attempting to recover from the descent. The postaccident examination did not reveal any preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Probable Cause: The loss of airplane control for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded operation.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20120904X65358&key=1


Images:

Photo of N139GS courtesy AirHistory.net


Oshkosh - Wittman Regional (KOSH / OSH)
28 July 2012; (c) Alex Christie

Revision history:

Date/timeContributorUpdates
02-Sep-2012 01:04 gerard57 Added
02-Sep-2012 01:05 gerard57 Updated [Aircraft type]
02-Sep-2012 07:51 Vaclav Kudela Updated [Aircraft type, Registration, Cn, Operator, Source]
02-Sep-2012 12:27 Geno Updated [Time, Location, Departure airport, Destination airport, Source, Narrative]
03-Sep-2012 10:15 Hans Gruber Updated [Source, Embed code]
06-Sep-2012 06:23 Geno Updated [Source, Embed code]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
28-Nov-2017 13:24 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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