This is a sole source requirement for the repair of one acoustic processor (NSN 7R 1680 016672139, Part Number FN328A760-1), a critical application item. The government lacks sufficient data to contract with other than the current source, and source approval is required for any new offerors. The initial induction period is 365 calendar days from contract award, with a government option to extend by an additional 365 days. The contractor must propose option pricing for up to 10 units over the contract period, providing separate pricing for the second year if changes apply. The government may place an initial order for any number of units up to the specified maximum.