Air Force inspectors have found cracks in the wings of more than one-third of subsonic, single-engine attack aircraft inspected since the problem was discovered last month, the Pentagon says.

As of late Wednesday, cracks had been discovered in 116 of 325 A-7D and K model aircraft inspected since the fleet was grounded, said Air Force spokeswoman Maj. Donna Pastor. She said inspections of the remaining 40 of the 365 planes were not yet completed.