If the chazan omitted something essential from his quiet shemoneh esrei (e.g. “ya’aleh v’yavo” etc.), and did not realize it until he finished his , he may rely on his chazaras hashatz to fulfill his obligation.
Shabbos Bulletin Parshas Yisro 5778
About the Author: Lev Seltzer
Lev Seltzer has been a member of Beis Tefillah from just a short time after its founding. He currently manages the BTYA.org website, and can be found every morning in the BTYA "Vasikin Room" where he is the gabbai of the minyon.