Service difficulty report · Fire Detector · Boeing 757324

Difficulty date
October 9, 2020
Submitted
October 9, 2020
Operation
Air carrier
Aircraft
N57852
Make and model
Boeing 757324
Aircraft serial
32811
Aircraft time
57,302 hours, 18,717 cycles
Part
Fire Detector
Part number
579601
Part serial
1352
Condition
Out Of Limits
Location
Lt Engine
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

ENGINE FIRE DETECTION FIRE PROTECTION SYSTEM FAIL LGT ON. EICAS MESSAGE FIRE/OVHT SYS DISPLAYED. EICAS STATUS MESSAGE (01=L, 02= R) ENG OH LP 1 AND LP 2 DISPLAYED 01 FIRE/OVHT SYS EICAS WARNING DISPLAYED L ENG OH LP 1 AND 2 STATUS DISPLAYED. ADDING CREW PHOTO TS #1 ENG NACELLE LOOP 1 AND 2. FOUND LOOP 1 TS5064 CONTINUITY B ETWEEN PINS D AND A 60 OHMS. OUT OF LIMITS. REF FIM 26-11-00-801 5-802. NEED TO REPLACE NACELLE DETECTOR LOOP ASSY S332T301-240 M /E 53-2611-9-0001. REF IPC 26-11-01-05 ITM 150 REMOVED AND REPLACED OVERHEAT DETECTOR ASSY, AMM 26-11-01, ALL OPS CHECKS GOOD, MEL CLOSED ROTABLE PARTS CHANGE WAS INDICATED - TT # 1021536 SN OFF 1352 IPC REFERENCE # 26-11-01-05 DETECTOR, NACEL OFF 53-2611-9-0001 1352 ON 53-2611-9-0001 1329