50 U.S. Code § 2111 - Recall
A retired participant recalled to duty in the Agency under subsection (a) or reinstated or reappointed in accordance with section 2051(b)  of this title shall, while so serving, be entitled, in lieu of the retired participant’s annuity, to the full basic pay of the grade in which the retired participant is serving. During such service, the retired participant shall make contributions to the fund in accordance with section 2021 of this title.
 So in original. Probably should be section “2051(c)”.
A prior section 271 of Pub. L. 88–643, title II, Oct. 13, 1964, 78 Stat. 1052, related to recalled participants and was set out as a note under section 403 of this title prior to the general amendment of Pub. L. 88–643 by section 802 of Pub. L. 102–496.
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