Service difficulty report · Wire · Boeing 737924ER

Difficulty date
August 30, 2021
Submitted
August 30, 2021
Operation
Air carrier
Aircraft
N38451
Make and model
Boeing 737924ER
Aircraft serial
31646
Aircraft time
29,610 hours, 10,649 cycles
Part
Wire
Condition
Burned
Location
Heat Controller
Stage of operation
IN
How discovered
V
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

FOUND WIRES BURNT & SEPERATED ON BACKSIDE OF BENCH PLUG FOR WINDOW HEAT CONTROL M322. COULD NOT INSPECT OR ID WIRES. REMOVED E4-2 RACK FOR BETTER ACCESS. SEE PICS TO FLAG SDR. TEMPORARILY INSTALLED NEW CONNECTOR D1046A, E4 -2 RACK POSITION M322 FOR L SIDE WHCU. REPLACED AND RETERMINATED WIRES 0420 2001 R&B FROM CONNECTORS D1046A TO D40068P. INSERTED CONTACTS D1046A POSITION13 & 26 U123409 TO D40068P. INSERTED CONTACTS INTO D1048A POSITIONS 13 & 26. REPLACED AND RETERMINATED WIRES W0420-2003 R&B FROM CONNECTORS D1048A REF WDM30-41-12-4. CONNECTOR D40068 (POSITON34 E4-2 RACK) A1 INSERT DAMAGED (LOCK BROKEN) PARTS ON ORDER. M&E P/NS 57-3440-3-0005, AND 57-7411-3-0001. CONTINUED REPLACING WIRING AND TEMINATING FROM D01046 TO TB 5016, TB4201, GD4204. REPLACED WIRE FROM D40068 AND TERMINATED AT TB5012. REF WDM 30-41-12 AND SWPM 20-71-11 AND 20-90-15 AND 20-74-11. WDM 30-41-12, SWP 20-00-14, SWP 20-74-11. COMPLETED WIRE TRANSFER BETWEEN CONNECTORS D4144J & D1046A REF. REPLACED INSERT AND WIRES FOR A1 FOR CONNECTOR D40068, CONNECTOR D40068 SECURED TO AE0402A . CONNECTOR D1046 SECURED ON E4-2 RACK. REF WDM 30-41-12. COMPLETED WIRE REPLACEMENT, TERMINATION AND SECUING OF DISTURBED WIRING IN E4-2 RACK REF SWPM 20-19-15 / 20-71-11 / 20-74-11 AND WDM 30-41-12 . RE INSTALLED RACK AND ALL ASSOCIATED CONNECTORS IN AIRCRAFT. RE INSTALLED ALL E-42 RACK MOUNTED BOXES. REF LOG PAGES 6928975, 6929026, 6928983, 6928952.