Part Number: 139AH25 (Component) Part Number: 139AJ (No description) Part Number: 139AJ7 (No description) Part Number: 139AJ883 (Component) Part Number: 139AJ883B (Ti) Part Number: 139AJ883C (Ic) Part Number: 139AJ883Q (National semiconductor) Part Number: 139AJ883QS (Nationl) Part Number: 139AJB (No description) Part Number: 139AJBLM (Ti) Part Number: 139AM (Servo altimeter, 0-50, 000 ft.) Part Number: 139AMFC2 (Altimeter,servoed) Part Number: 139AMPC (Servo altimeter, 0-50, 000 ft.) Part Number: 139AMPC2 (Altimeter,servoed)