This is reported by the press service of the Ukrainian Navy's 38th Detached Marine Brigade.
It is reported that at 07:43 a.m., the brigade's fighters hit an enemy Ka-52 with a man-portable anti-aircraft missile system.
"Marines' morning does not start with coffee," the military commented.
Ukrainian defenders are not specifying the location of the downed Russian helicopter for security reasons.
On July 11, it was also reported that a helicopter was shot down.
Over the past 24 hours, on July 24, Russia lost 600 soldiers, 14 drones and 12 tanks in the war in Ukraine.