As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 MANF FAIL INFLIGHT WHEN WING ANTI ICE SELECTED. FL340. COMPLIED WITH QRH. PERFORMED DECAY CHECK ON THE NR 3 MANIFOLD IAW MM 36-00-01-5, SYSTEM PASSED. CHECKED MANIFOLD FAIL DETECT UNIT IN CAC. FOUND RT WING PRESSURE SWITCH FAULTED. REMOVED AND REPLACED MANIFOLD FAIL DETECTION PRESSURE SWITCH IAW MM 36-23-03-4. OPS CHECKS NORMAL.