SDR ASAA2018120827334

Service difficulty report · Wire · Boeing 737890

Difficulty date: December 8, 2018
Submitted: December 13, 2018
Operation: Air carrier
Aircraft: N577AS
Make and model: Boeing 737890
Aircraft serial: 35186
Aircraft time: 44,606 hours, 13,334 cycles
System (JASC): 2497 · Electrical Power System Wiring
Part: Wire
Condition: Broken
Location: Main Battery
Stage of operation: IN
How discovered: C
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

WHILE PERFORMING AUX BATTERY CHECK PER AMM 24-3H1DC AMP WAS +449 AND BATTERY VOLTAGE WAS 32V NO FAULTS INDICATED DURING ELEC PANEL TEST. GROUNDED - YES. WHILE T/S AUX BATTERY SYSTEM FOUND W2532-2202R-24 BROKEN FROM D10328 REF WDM 24-31-12 PG1. REMOVED WIRE W2532-0531-1/0 AND CUT W2532-2202B-24 6" FROM CD 3256-DC INSTALLED WIRE W2532-0531 & REATTACHED W2532-2202B-24 REF SWPM. SYS OPS NORMAL.