As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTS WING A. ICE SYS FAULT GROUNDED - YES. PFR SHOWS R WAI VALVE (10DL). R WING AI VALVE OPS OK (USING APU AIR) REF AMM 30-11-00-810-803A REQUIRES OPS CK W/ ENGINES AS SOURCE AIR PER DISCREP. 10241 13 DEC 2019. PERFORMED AN OPS CHECK OF ENGINE A. ICE WITH ENGINE BLEED PER AMM 30-11-00-810-803-A. OPS CHK GOOD.