As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG FIRE EXT SUB FUNCTIONS TEST FAILED STEPS D4 & D5 OF TASK CARD 4R2640019 SEQ NR 358. THE VLV G PUMP FIRE FAILED TO CLOSE WHEN NR 1 ENG FIRE SWITCH WAS RELEASED. DUE TO THE INTERMITTENT OPERATION OF THE NR 1 ENG HYD FIRE VLV 1046G K, WE NEED TO REPLACE VLV 104GK IAW IPC 29-11-05-03B ITEM 190C & AMM 29-11-52 PG BLOCK 401. HYD FIRE VLV 1046GK REPLACED & FUNCTIONAL TEST ACCOMPLISHED ON DOCK WU W9162V.