What should be the ACAT assignment for this program based on SECNAVINST 5000.2E?
(1) Your IT Total Program Costs (all appropriations) = Your IT Life-Cycle Costs = $6M (RDT&E) + $0.6M (PMC) + $51M (O&M) = $57.6M.
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(2) Since your IT Total Program Costs are > $30M < $126M in FY 2000 constant dollars, then your program meets the SECNAVINST 5000.2E Table E1T1 dollar criteria for designation as an ACAT III program.
(3) Your interpretation of SECNAVINST 5000.2E Table E1T1 is correct that Program Costs/year and Total Program Costs dollar threshold limits for an IT ACAT IVT and an IT AAP designation are the same, the discriminator between the two is that an IT ACAT IVT requires OT&E, but an IT AAP does not require OT&E. An IT ACAT IVT program must also have Life-Cycle Costs < $378M in FY 2000 constant dollars. An IT AAP also has an implicit Life-Cycle Costs threshold of < $378M, since if its Life-Cycle Costs were > $378M it would designated an ACAT IA program.