As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - FLT 164 - AFTER TAKEOFF FROM PHL, CAPTAIN LOST WEATHER RADAR. DUE TO WEATHER, FLIGHT WAS NOT ABLE TO CONTINUE TO BTV AND RETURNED TO PHL. FLIGHT LANDED WITH NO FURTHER INCIDENT. MX REPLACED WEATHER RADAR TRANSCEIVER. OPS CHECKED NORMAL. (M)