MUMBAI, Jan. 23 -- A 24-year-old air-conditioner technician died on Tuesday after allegedly falling from the 10th floor of a residential building in Borivali West while on duty, following which the police booked the owner and manager of the repair firm for negligence. According to the police, the deceased, Vivek Yadav, a resident of Nalasopara, had been working with Indocool for the past three years. The incident occurred at 1.30 pm on Tuesday in Crescent Heights in Borivali West. "Yadav lost balance while repairing the air conditioner and fell to the ground floor, suffering severe head and leg injuries and losing consciousness," said a police officer, adding that he was rushed to a hospital in Kandivali, where he was declared dead. Yadav's colleague alleged that no safety net had been installed outside the building and that even the company had failed to provide basic safety equipment....