As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 621 30-10 2697351 07MAR22 PHL CLOSE IN ICING CONDITIONS AT 20000 FT, STAB A/I SW DID NOT ILLUMINATE THEN GOT STAB A/I FAIL THEN ICE COND A/I INOP EICAS MSGS. FACT 07MAR22 21:06 PHL PERFORMED ANTI ICE OPS CHECK IAW AMM 30-00-00 OPS CHECK GOOD OK FOR SERVICE.