What was found
NR 2 FIRE HANDLE WILL NOT TEST USING MASTER-DIM TEST SWITCH. SUSPECT FAULTY FIRE CONTROL MODULE. ENGINE & APU FIRE CONTROL MODULE REPLACED AND TESTED NORMAL PER MM 26-21-51-401. AC OK FOR SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 2 FIRE HANDLE WILL NOT TEST USING MASTER-DIM TEST SWITCH. SUSPECT FAULTY FIRE CONTROL MODULE. ENGINE & APU FIRE CONTROL MODULE REPLACED AND TESTED NORMAL PER MM 26-21-51-401. AC OK FOR SERVICE.