SDR ASAA2020120333635

Service difficulty report · Lug · Boeing 737890

Difficulty date: December 3, 2020
Submitted: December 8, 2020
Operation: Air carrier
Aircraft: N593AS
Make and model: Boeing 737890
Aircraft serial: 35107
Aircraft time: 46,972 hours, 14,161 cycles
Engine: Cfmint CFM567B262
System (JASC): 2612 · Fire Detection
Part: Lug
Condition: Broken
Location: Nr 1 Fire Loop
Stage of operation: NR
How discovered: 9
Nature of condition: N
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE NR 1 LOOP B OVERHEAT/FIRE DETECT LOOP INOPERABLE. GROUNDED-YES. FOUND B LOOP TERMINAL LUG AT ENGINE FAN UPPER DETECTOR, M1757, BROKEN OFF. RETERMINATED, REF B737-800 SWPM 20-30-11. ACCOMPLISHED ENGINE FIRE DETECTION OPERATIONAL TEST, REF B737-800 MM 26-11-00-710-801. OPERATIONS CHECK GOOD. ACCOMPLISHED ENGINE/APU FIRE DETECTION CONTROL MODULE BITE, REF B737-800 FIM 26-10 TASK 801. NO FAULTS FOUND. GROUND VERIFICATION SUCCESSFUL.