Loss of control Accident Van's RV-4 N107SS,
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ASN Wikibase Occurrence # 71506
This record has been locked for editing.

Date:Friday 15 January 2010
Type:Silhouette image of generic RV4 model; specific model in this crash may look slightly different    
Van's RV-4
Registration: N107SS
MSN: 001
Total airframe hrs:1345 hours
Engine model:Lycoming O-320
Fatalities:Fatalities: 2 / Occupants: 2
Aircraft damage: Substantial
Location:600 feet from Lake Cypress Drive, Leetown, Hancock County, MS -   United States of America
Phase: Initial climb
Departure airport:Picayune, MS (5MS5)
Destination airport:Picayune, MS (5MS5)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
According to a witness, the pilot was preparing the accident airplane for a test flight after replacing a ground wire in the avionics. The pilot and passenger boarded the airplane, the engine started, and they made a normal departure to the north. Another witness observed the airplane shortly after it departed. He noticed that the airplane was low and that it appeared that it was about to perform trick-type maneuvers. The airplane rolled to the left and pitched down, impacting the ground shortly thereafter. A postaccident examination of the wreckage and accident site revealed that impact damage signatures on the nose, wings, and fuselage were consistent with a stall and spin, fragmentation of the propeller consistent with engine operation at impact. Weight and balance calculations were performed using weight and balance documents recovered at the site and the actual weights of the occupants. Calculations revealed the airplane was loaded about 250 pounds in excess of the experimental amateur-built kit manufacturer's recommended maximum gross weight, and that that the center of gravity was located more than .25 inches aft of the envelope for the maximum gross weight.
Probable Cause: The pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall/spin. Contributing to the accident was the overweight and aft-center-of-gravity condition of the airplane at takeoff.

Accident investigation:
Investigating agency: NTSB
Report number: ERA10LA120
Status: Investigation completed
Duration: 1 year and 6 months
Download report: Final report





Photo: NTSB

Revision history:

15-Jan-2010 20:04 RobertMB Added
16-Jan-2010 04:21 RobertMB Updated [Time, Aircraft type, Phase, Departure airport, Source, Narrative]
16-Jan-2010 06:54 Alpine Flight Updated [Aircraft type, Operator, Other fatalities]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
26-Nov-2017 15:20 ASN Update Bot Updated [Aircraft type, Other fatalities, Departure airport, Destination airport, Source, Narrative]
26-Nov-2017 16:24 harro Updated [Aircraft type, Other fatalities, Photo, ]

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