As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PWS FAIL FLAG ON ND AFTER PASSING 80 KTS ON T/O ROLL IT DISAPPEARED AROUND 1000 AGL, DID NOT ILLUMINATE AGAIN DURING FLIGHT. GROUNDED - YES. PERFORMED WEATHER RADAR SYSTEM BITE TEST IAW AMM 34-43 TASK 801. SYSTEM TEST SATIS. OK FOR SERVICE.