. . . . . . "Aviation intermediate maintenance manual for 20-mm automatic gun helicopter armament subsystems, M97A2, PN 9324960 (1005-01-100-4469), M97A1, PN 9324699 (1005-01-063-4762)"@en . "20-mm automatic gun helicopter armament subsystems, M97A2"@en . . . "Handbooks and manuals"@en . . . . .