(a) A new surety bond covering all or part of the obligations on a bond previously approved may be substituted for the original bond if approved by the head of the contracting activity, or as otherwise specified in agency regulation.
(b) When a new surety bond is approved, the contracting officer shall notify the principal and surety of the original bond of the effective date of the new bond. [48 FR 42286, Sept. 19, 1983, as amended at 61 FR 39213, July 26, 1996]