; and (2) if the use described in paragraph (1) was— (A) required by the Federal Aviation Administration for compliance with part 139 of title 14, Code of Federal Regulations (or successor regulations); and (B) carried out in accordance with Federal Aviation Administration standards and guidance on the use of that substance. (d) Savings provision Nothing in this section precludes liability for damages or costs associated with the release of a covered perfluoroalkyl or polyfluoroalkyl substance by a sponsor if that sponsor acted with gross negligence or willful misconduct in the use of an aqueous film forming foam.