Safety officials probing records of work on Southwest jets

DALLAS (AP) — Federal regulators have threatened to ground dozens of Southwest Airlines jets if the airline can’t confirm that the planes, which it bought used from foreign operators, meet all safety standards.
The Federal Aviation Administration said Monday it has validated some major repairs to the planes, and it’s asking Southwest for more frequent updates until Southwest completes documenting maintenance on jets that have yet to be inspected.
Southwest says repairs on some