Service difficulty report · Water Heater · Boeing 737924ER

Difficulty date
November 28, 2025
Submitted
December 2, 2025
Operation
Air carrier
Aircraft
N37464
Make and model
Boeing 737924ER
Aircraft serial
41745
Aircraft time
40,820 hours, 15,023 cycles
Part
Water Heater
Part number
8921082G5
Part serial
1069864
Condition
Inoperative
Location
Zone 900
Part time
40,798 hours, 15,015 cycles
Stage of operation
TX
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

WHITE SMOKE IN RIGHT AFT LAV. SMOKE DET WENT OFF TWICE UPON REMOVAL OF RIGHT AFT LAVATORY HOT WATER HEATER, CONFIRMED ELECTRICAL SMELL FROM THE WIRES ATTACHED TO THE HOT WATER HEATER. M&E 59-3813-3-0001 (WATER HEATER) ORDERED AND DELIVERED TO TERM A. INSPECTED LAV E WATER HEATER WIRES AND FOUND NO BURN MARKS AND FOUND WIRE OUTER JACKET MINIMAL TORN AT 2 WIRES. REPAIR OUTER JACKETS IAW SWPM 20-10-13. REF LP 7097376 UPON CONDITIONAL INSPECTION, FOUND WATER HEATER BURNT OUT, REMOVED AND REPLACED WATER HEATER (LAV E) IAW AMM 38-13-01/401. OPS CHECKED OK. NO SMELL OF SMOKE IN CABIN.