As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAINS RADAR ALT BREAKS LOCK REPEATLY DURING CLIMB AND DECSENT THROUGH APPROX FL 200. REMOVED AND REPLACED THE LEFT RADIO ALTIMETER TRANSCEVER IAW MM 34-33-01-4. COMPLETED MCDP TEST 30/40 WITH NO FAULTS. IAW 22-00-02-2. OK FOR SERVICE.