What was found
NR 1 ENGINE FIRE DETECTION SYSTEM WILL NOT TEST NR 1 ENG FIRE WALL TEST INOP. INSTALLED OVERHAULED ENGINE SENSOR LOOP IAW WITH B-M/M 26-11-021 R&R FIRE SENSOR/RESPONDER IAW B-727 M/M 26-11-31 ON NR 1 ENG, OPS CHECK SERVICEABLE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 1 ENGINE FIRE DETECTION SYSTEM WILL NOT TEST NR 1 ENG FIRE WALL TEST INOP. INSTALLED OVERHAULED ENGINE SENSOR LOOP IAW WITH B-M/M 26-11-021 R&R FIRE SENSOR/RESPONDER IAW B-727 M/M 26-11-31 ON NR 1 ENG, OPS CHECK SERVICEABLE.