1 fatality

31 Oct 2014: SCALED COMPOSITES 339 (N339SS) — Scaled Composites LLC — Koehn Dry Lake, CA

Koehn Dry Lake, CA, United States

On 31 Oct 2014, a SCALED COMPOSITES 339 (registration N339SS) operated by Scaled Composites LLC was involved in an aviation accident near Koehn Dry Lake, CA. One person was killed. Investigators recorded the probable cause as: Scaled Composites' failure to consider and protect against the possibility that a single human error could result in a catastrophic hazard to the SpaceShipTwo vehicle. This summary draws on records from NTSB.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

On October 31, 2014, SpaceShipTwo (N339SS) broke apart during a rocket-powered test flight near Koehn Dry Lake, California, resulting in serious injuries to the pilot and fatal injuries to the copilot.

Accident Overview

On October 31, 2014, at 1007:32 Pacific daylight time, the Scaled Composites LLC SpaceShipTwo (SS2) suborbital rocket, registration N339SS, broke into multiple pieces while conducting a rocket-powered test flight. The debris impacted terrain over a 5-mile area near Koehn Dry Lake, California. The pilot sustained serious injuries, while the copilot received fatal injuries. SS2 was destroyed. No injuries on the ground resulted from the falling debris.

Sequence of Events

SS2 had been released from its launch vehicle, WhiteKnightTwo (WK2), registration N348MS, approximately 13 seconds before the structural breakup occurred. The flight was being conducted under an experimental permit issued by the Federal Aviation Administration's Office of Commercial Space Transportation (AST) in accordance with 14 Code of Federal Regulations Part 437.

Investigation

National Transportation Safety Board (NTSB) investigators traveled to support the investigation and utilized data from various sources to prepare an aerospace accident report. The full report is available under report number NTSB/AAR-15/02.

Contributing factors

ManufacturerCopilotEffect on personnelFAA/RegulatorFlight crewEmergency services