A Mi-28 attack helicopter performing a routine flight has crashed in the Kaluga region of Russia, Russian news agency TASS reports. According to the Russian Defense Ministry, the helicopter crashed in a forest near the village of Klenki, Zhizdrinsky district, Kaluga region. The aircraft was performing a scheduled flight. The crew was killed in the incident. There was no damage on the ground. A commission of the Russian Aerospace Forces is working at the crash site. Unlike the Ka-52 Alligator helicopter, the Mi-28 is not equipped with an ejection system. Aircraft accidents in Russia Recently, a…