SDR ASAA2019070129906

Service difficulty report · Wire · Boeing 737890

Difficulty date: July 1, 2019
Submitted: July 23, 2019
Operation: Air carrier
Aircraft: N587AS
Make and model: Boeing 737890
Aircraft serial: 35684
Aircraft time: 45,039 hours, 13,093 cycles
System (JASC): 2697 · Fire Protection System Wiring
Part: Wire
Condition: Broken
Location: Nr 1 Engine
Stage of operation: TX
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

#1 ENG "A" LOOP INTERMITTENTLY INOP. PRIOR TO TAXI #1 FIRE HANDLE DID NOT ILLUMINATE DURING TEST. AFTER TAXI TEST WAS NORMAL. GROUNDED - YES. WHILE PERFORMING GVI OF CORE FIRE DETECTION HARNESS MW0325 FOUND BROKEN WIRE AT HEAT DETECTOR M1759 REF WDM 26-11-11 PG 1. RETERMINATED 1 EA BROKEN LUG REF AMM 26-11-02-960-801. ACCOMPLISHED ENGINE FIRE DETECTION OPERATIONAL TEST REF AMM 26-11-00-710-801. OPS CK GOOD.