As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, RECEIVED (RADAR FAULT) AMBER ANNUNCIATION ON MFD & PFD WHEN SELECTING RADAR. RADAR PAINTS SOLID ARC OF GREEN, YELLOW AND RED AT MID RANGE SETTING. (RADAR FAULT) FLASHES THEN GOES STEADY. STILL SHOWS LIGHTENING. TROUBLESHOT SYSTEM. FOUND BAD RADAR ANTENNA/TRANSCEIVER. REMOVED BAD RADAR ASSY. P/N 822-1050 S/N 5P2H. INSTALLED AN OVERHAULED RADAR ASSY. OPS CHECKS GOOD AT THIS TIME. REF: CESSNA 525 AMM 34-41-03.