Abstract: A removable passenger control unit (20) is detachably latched in position in a recess in the arm (12) of a passenger seat by means of a rotatable C-shaped pawl (40) that is mounted on a support arm (54) that projects into a recess (48,50,52) in an end of the passenger control unit. The legs (70,72) of the pawl straddle the support arm, and one leg (72) is threadedly engaged with a cap screw (60) that is rotatable and slidable in an aperture at the end of the support arm. The other leg (70) of the C-shaped pawl (40) has an aperture that receives an enlarged head (62) of the cap screw. The arrangement allows the pawl to be rotated between latched and unlatched positions and to be shifted axially of the cap screw by rotation of the cap screw. The capture of an upper leg (70) of the C-shaped pawl by the enlarged head (62) of the cap screw resists tilting moments exerted by engagement of the pawl with a panel edge ( 18) of the passenger seat.