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ASN Wikibase Occurrence # 137955
 
This record has been locked for editing.

Date:13-AUG-2011
Time:11:30
Type:Silhouette image of generic RV8 model; specific model in this crash may look slightly different
Van's RV-8
Owner/operator:Private
Registration: N189DK
MSN: 82734
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Lake Conroe, Conroe, TX -   United States of America
Phase: En route
Nature:Private
Departure airport:
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The RV-6 collided with the RV-8 from below while maneuvering during day visual meteorological conditions. The RV-6 descended uncontrolled to ground impact, and the pilot of the RV-8 made a forced landing in a field. The two airplanes were part of group of seven airplanes practicing formation flight maneuvers for an upcoming airshow. According to the pilot of the RV-8, the RV-6 and another airplane were instructed to move into trail positions behind the RV-8. He saw the two airplanes drift back and out of view. About 5 seconds later, the pilot of the RV-8 heard a loud bang and immediately his airplane's engine stopped operating. He did not see the RV-6. The pilot of the other airplane that was moving into the trail position with the RV-6 said that the RV-6 was supposed to be the last airplane in this formation, but instead it moved directly behind the RV-8. The pilot thought that maybe the RV-6 pilot forgot which slot he was supposed to take, so he let the RV-6 have the position and moved behind the RV-6. Shortly after, he observed the RV-6 drift beneath and then climb up and collide with the RV-8. The collision was not violent. He then saw the two airplanes separate, and the RV-6 slowly nosed over into a 60-degree nose-down descent toward the ground. He reported that the pilot of the RV-6 "didn't seem in control of his airplane" before the collision and might have been incapacitated. However, he did not observe anything unusual with the pilot of the RV-6 that would have indicated a possible medical condition before or during the flight. Autopsy and toxicological testing of the RV-6 pilot revealed no evidence of impairment or incapacitation. Although incapacitation or impairment of the RV-6 pilot could explain why he failed to maintain clearance from the RV-8, there is insufficient evidence to determine whether this occurred.

Probable Cause: The failure of the pilot of the RV-6 airplane to maintain clearance from the RV-8 airplane while practicing formation flight.

Sources:

NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N189DK


Revision history:

Date/timeContributorUpdates
14-Aug-2011 21:57 Alpine Flight Added
15-Aug-2011 09:53 Geno Updated [Registration, Cn, Operator, Location, Departure airport, Destination airport, Source, Narrative]
13-May-2016 15:57 Anon. Updated [Source]
21-Dec-2016 19:26 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 17:05 ASN Update Bot Updated [Aircraft type, Operator, Total fatalities, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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