Officials say the Atlanta police helicopter that crashed over the weekend and killed two officers on board had been completely refurbished in recent years.
Mayor Kasim Reed said at a news conference Monday the helicopter had been upgraded in 2004 and 2005. He did not say specifically what those upgrades were.
The helicopter crashed late Saturday while it was looking for a boy who had run away. The boy was found later unharmed.
Reed says the 45-year-old helicopter was considered safe by the department's maintenance crew and its pilot, who was a 16-year veteran of the air unit.
It was one of four helicopters in the department's fleet. It had been given to the department in 1994 by the military.