Virgin Galactic will postpone a SpaceShipTwo suborbital spaceflight that had been scheduled for this month, electing to instead immediately begin an extended maintenance period for the spaceplane and its carrier aircraft that will further delay the start of commercial flights.
The company said Oct. 14 that it decided to move directly intended a planned maintenance period after a recent lab test of materials used on the vehicles “flagged a possible reduction in the strength margins of certain materials used to modify specific joints” that “requires further physical inspection.”
Virgin Galactic postpones SpaceShipTwo flight, begins maintenance period – SpaceNews



