SDR ASAA2019061089639

Service difficulty report · Fire Loop · Boeing 737890

Difficulty date: June 8, 2019
Submitted: June 10, 2019
Operation: Air carrier
Aircraft: N585AS
Make and model: Boeing 737890
Aircraft serial: 35683
Aircraft time: 44,882 hours, 13,459 cycles
System (JASC): 2612 · Fire Detection
Part: Fire Loop
Part number: 902862
Condition: Malfunctioned
Location: Nr 2 Engine
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

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

What was found

ENG #2 LOOP A TEST INOP. GROUNDED - YES. PERFORMED M279 BITE REF 26-10 TASK 801. NO FAULTS LOGGED FOUND. ACCOMPLISHED ENGINE - WIRING HARNESS/FIRE DETECTOR - FAULT ISOLATION 26-10 TASK 805. ALL READINGS FOUND WITHIN LIMITS. DUE TO LONG HISTORY OF #2 ENG A LOOP FAULTS. PRECAUTIONARY REPLACED 3 FIRE DETECTORS M1757 A/B LOOP, M1759 A/B LOOP, M1760 A/B LOOP. REF 26-11-01. PERFORMED OPS TEST 26-11-00-710-801. ALL TESTS PASSED.