Service difficulty report · Window · Boeing 737890

Difficulty date
March 29, 2020
Submitted
March 31, 2020
Operation
Air carrier
Aircraft
N518AS
Make and model
Boeing 737890
Aircraft serial
35693
Aircraft time
42,385 hours, 12,551 cycles
Part
Window
Part number
56100027
Part serial
0105W6210
Condition
Delaminated
Location
Cockpit
Part time
66,715 hours, 24,480 cycles
Stage of operation
TX
How discovered
O
Nature of condition
P
Precautionary procedure
K

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

What was found

ON TAXI L2 WINDOW STARTED TO FORM BUBBLES/MELT/DELAM NO MASTER CAUTION OR OVERHEAT LIGHT. GROUNDED - YES. WHCU BITE SHOWS NO CURRENT FAULTS FOUND LEFT SIDE WINDOW. WHCU ON WRONG TAP. ADJUSTED TO PROPER TAP FOR NEW WINDOW TO BE INSTALLED, REF WDM 30-41-12. REMOVED AND REPLACED L2 WINDOW ASSY REF B737-800 AMM 56-12-11 OPS CHECK GOOD.