(a) Suspension upon formal challenge to termination (1)
Notice of formal challenge. (i) If the PBGC is advised, before its review period under
§ 4041.26(a) ends, or before issuance of a notice of inability to determine sufficiency or a distribution notice under
§ 4041.47(b) or (c), that a formal challenge to the termination has been initiated as described in
paragraph (c) of this section, the PBGC will suspend the termination proceeding and so advise the plan administrator in writing.