14 CFR § 68.11

If the Administrator receives credible or urgent information, including from the National Driver Register or the Administrator's Safety Hotline, that reflects on an individual's ability to safely operate an aircraft under § 61.113(i) of this chapter, the Administrator may require the individual to provide additional information or history so that the Administrator may determine whether the individual is safe to continue operating under that section.

The Administrator may use credible or urgent information received under paragraph (a) to request an individual to provide additional information or to take actions under 49 U.S.C. 44709(b).