Experts: Dallas air show crash may lead to more safety rules

While the cause of a deadly collision between two vintage military aircraft at a Dallas air show to commemorate Veterans Day remains unknown, experts said Monday that the accident will likely renew discussion over whether additional safety rules are needed for such events.

Safety recommendations made following aircraft accidents at similar events have focused on protecting spectators, pilot medical fitness and aircraft maintenance.

“The (Federal Aviation Administration) has tightened airshow requirements. This will certainly raise the debate again,” said Steven Wallace, former director of the FAA's office of accident investigations.