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ASN Wikibase Occurrence # 138710
 
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Date:25-SEP-2011
Time:12:43
Type:Silhouette image of generic VELO model; specific model in this crash may look slightly different
Velocity RG
Owner/operator:Private
Registration: N360TV
MSN: DMO237
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Substantial
Category:Accident
Location:Naer Raleigh Executive Jetport - KTTA, NC -   United States of America
Phase: Initial climb
Nature:Private
Departure airport:Sanford, NC (KTTA)
Destination airport:Sanford, NC (KTTA)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
Examination of pilot, airplane, and fueling records revealed that the pilot/owner had flown the airplane about 24 total hours over the 7 years since he purchased it. He had last flown the airplane 18 months before the accident, and, on his most recent application for a medical certificate made 10 days before the accident, he reported that he had not flown at all in the preceding 6 months. Two pilots operating in the traffic pattern of the departure airport at the time of the accident described a takeoff roll for the airplane that was twice as long as expected. They observed the airplane at “very low” altitude, in a continuous, descending left turn in the vicinity of the crosswind to downwind legs of the traffic pattern. The airplane then disappeared from view, and a fireball appeared from the woods. Examination of the wreckage revealed no preimpact mechanical anomalies in the flight control system, but it did reveal that the turbocharger waste gate was frozen in a nearly full-open position due to corrosion. This discrepancy resulted in a loss of available boost pressure and significantly reduced the available power. The most recent annual inspection of the airplane was completed 3 years before the accident, and, 5 months before the accident, the pilot requested that the local maintenance facility draft a list of discrepancies that would require correction in order to return the airplane to an airworthy condition. The discrepancy list included the frozen turbocharger waste gate. A review of the pilot's medical records revealed that the pilot was treated for medical and psychological conditions that he failed to report on his most recent medical certificate application. It could not be determined if the medical conditions or medications present at the time of the accident posed a significant hazard to flight safety. If the pilot had flown more recently, it is possible that he may have recognized that the airplane was not performing normally and aborted the takeoff.
Probable Cause: The pilot/owner's intentional flight of his airplane with known mechanical discrepancies (frozen turbocharger waste gate), which resulted in a partial loss of engine power and subsequent collision with trees and terrain shortly after takeoff. Contributing to the accident was the pilot’s lack of recent experience.

Sources:

NTSB

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 9 months
Download report: Final report
Location


Revision history:

Date/timeContributorUpdates
25-Sep-2011 20:18 RobertMB Added
03-Oct-2011 11:56 Geno Updated [Source]
21-Dec-2016 19:26 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 17:13 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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