The aircraft involved in the incident was a McDonnell Douglas MD-82 (registration ), a derivative of the McDonnell Douglas DC-9 and part of the McDonnell Douglas MD-80 series of aircraft [REF].
The aircraft was equipped with X band weather radar, which is susceptible to attenuation during heavy precipitation, and did not have an attenuation alert to warn the flight crew of system impairment during heavy rainfall [REF].