It took all of 24 hours after it was first reported the 747-8 and 787 would require larger separation distances than its predecessors. The initial rule called for 10nm separation between the aircraft, significantly more than the 4-6nm currently required for spacing. Dominic Gates of the Seattle Times was the first to report on the change.
"[The rule] was issued prematurely," said FAA spokeswoman Laura Brown. "There were a number of errors."
The order applied to the 787 Dreamliner and the new version of the jumbo jet, the 747-8. Brown said the two aircraft should not have been included in a single order.
A new order giving the necessary separation distances for the 747-8 will be issued in the next few days, she said. A new order for the 787 Dreamliner will not be ready for more than a week.
Not coincidentally, a pair of 747s, one -8 and one -400 are participating in wake vortex evaluations in San Bernardino and Freso. The 747-400 (N794BA), formerly of Korean Air, was commissioned by Boeing to compare the wakes of the two variants. The -400 is operating as BOE573 during its participation in the flight test campaign. The 747-8, RC503, Boeing's fourth flight aircraft, is painted in the colors of launch customer Cargolux and has been transiting back and forth between Fresno Yosemite and San Bernardino Airports since September 27.