Under the Contract Disputes Act (CDA), a contractor has 90 days to appeal a contracting officer’s final decision. The 90-day period in which to appeal a contracting officer’s decision to the Board is jurisdictional and may not be waived.
Source: PNWC’s Government Contracting Update: Deadline for Filing Appeal Could Be Extended
New Regulation Formalizes Ombudsman Practice and Identity for IDIQ Contracts
An ‘ombudsman’ is an official charged with addressing and/or investigating the interests of individuals’ or companies’