SDR ASAA2015053011905

Service difficulty report · Fire Loop · Boeing 737890

Difficulty date: May 30, 2015
Submitted: June 2, 2015
Operation: Air carrier
Aircraft: N516AS
Make and model: Boeing 737890
Aircraft serial: 39044
Aircraft time: 24,536 hours, 7,568 cycles
System (JASC): 2611 · Smoke Detection
Part: Fire Loop
Condition: No Test
Location: Nr 2 Nacelle
Stage of operation: IN
How discovered: C
Nature of condition: L
Precautionary procedure: K

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

What was found

DURING PREFLIGHT, NR 2 ENGINE LOOP "A" TESTS BAD. "B" TESTS NORMAL. ACFT GROUNDED. COULD NOT DUPLICATE PROBLEM. NR 2 ENGINE FIRE DET TEST, OPS NORMAL W/ SELECTOR SWITCH IN A, B, AND BOTH POSITION, SEVERAL SUCCESSFUL TESTS IN EACH POSITION. NO HISTORY LAST 90 DAYS. ETOPS SIGNIF SYS, GROUND VERIFICATION SUCCESSFUL.