Service difficulty report · Fuse · Boeing 737824

Difficulty date
May 10, 2025
Submitted
May 12, 2025
Operation
Air carrier
Aircraft
N33284
Make and model
Boeing 737824
Aircraft serial
31635
Aircraft time
65,505 hours, 24,310 cycles
Part
Fuse
Condition
Blown
Location
Zone 200
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

FLOOR PROXIMITY EMERGENCY LIGHTS INOP ROWS 22-31. REPLACED BATTERY M1670 & M1672. POWER SUPPLY M1672 FUSES CHECK OK. REPLACED BATTERY M1672 POWER SUPPLY. NO HELP. REINSTALLED EQUIPMENT IN ORIGINAL LOCATIONS. REF WDM 33-51-22-3.1 REF SSM 33-51-21-104.1 & WDM 33-51-22-3.1, FOUND POWER SUPPLY M1670 PIN 12 HAS BLOWN FUSE, ENDED UP REPLACING POWER SUPPLY CHARGER M1670, BATTERY & SEVERAL FUSES IN REF AMM 33-51-06/201, NO HELP FUSE KEEPS POPPING. FOUND POWER WIRE PIN 12 ON CONN D10716 SHORTED TO GND. AFTER T/S & ISOLATION FOUND CULPRIT PROX LITE M1388 POWER WIRE SANDWICHED BETWEEN RAIL AND RAIL COVER. PERFORMED WIRE REPAIR REF SWPM 20-10-13. PERFORMED OPS TEST REF AMM TASK 33-51-00-710-801 & AMM 33-51-06/201 ALL TEST PASSED.