NNSY Norfolk requires the testing, overhaul, and upgrade of four (2) OA-9243A(V)3/SR Antenna Tilting Group (ATG) for the USS BUSH (CVN 77). The (2) OA-9243A Antenna Tilt Groups (ATG) must be restored in accordance with NAVSEA technical Manual EE110-LBOMI0 (Tender №89171422)