SDR FDEA2018121863510

Service difficulty report · Circuit Breaker · Airbus A300*

Difficulty date: December 16, 2018
Submitted: December 18, 2018
Operation: Air carrier
Aircraft: N811FD
Make and model: Airbus A300*
Aircraft serial: 457
Aircraft time: 54,349 hours, 17,379 cycles
System (JASC): 2450 · AC Power Distribution System
Part: Circuit Breaker
Part number: NSA931323501
Condition: Burned
Location: Buss Nr 2
Stage of operation: DE
How discovered: O
Nature of condition: H
Precautionary procedure: O

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

What was found

811 24-50 4376 15DEC18 MEM FACT LOGPAGES:3011783 DURING APPROACH PHASE, RECEIVED "BUS 2 FAIL". COMPLIED WITH QRH. FOUND HEAT DAMAGE ON C/B 2XN. R&R'D C/B 2XN PART NUMBER NSA 931323-501 AMENDMENT A. REF A300 ESPM 20-46-10. NEED ENGINE RUN TO TEST BUS SYSTEM 2. REF AWM 24-51-03 AND 24-58-15.CHECKED LOAD SIDE OF WIRES OF 2XN FOR SHORTS TO GROUND AND SHORTS TO EACH OTHER USING A MEGGER, REF ESPM NO DEFECTS NOTED. TURNED ON ALL USERS OF BUS 202XP TO LOAD IT UP AND C.B 2XN STAYED IN. ENGINE RUN PERFORMED SATISFACTORY.