What was found
NOV 24. WINDOW HEAT L FWD MESSAGE APPEARS AND WINDOW L FWD CRACKED // CORRECTIVE ACTIONS: DURING FLIGHT, AFTER WINDOW HEAT L FWD- EICAS ADVISORY MESSAGE, THE LH WINDSHIELD GOT CRACKED. THE CORRELATED MAINTENANCE MESSAGE WAS: [ ] 30-32313 LEFT FLIGHT COMPARTMENT NO. 1 WINDOW HEATER CHANNEL A HAS FAILED. SO THEN, DO THE FAULT ISOLATION FOR THE MAINTENANCE MESSAGE 30-32313 LEFT FLIGHT COMPARTMENT NO. 1 WINDOW HEATER CHANNEL A HAS FAILED. SEE FIM TASK DMC-B787-A-30-40-F1-35A-421A-A. IF YOU DO NOT FIND A PROBLEM WITH THE WIRING THEN: 1-. REPLACE THE WINDOW HEAT PROTECTION UNIT (M3041011). 2-. REPLACE THE FLIGHT COMPARTMENT NO. 1 WINDOW (B3041001). REFERENCES: WINDOW HEAT PROTECTION UNIT - REMOVAL - AMM B787-A-30-41-03-00A-520A-A. WINDOW HEAT PROTECTION UNIT - INSTALLATION - AMM B787-A-30-41-03-00A-720A-A. FLIGHT COMPARTMENT NO. 1 WINDOW - REMOVAL - AMM B787-A-56-11-01-00A-520A-A. FLIGHT COMPARTMENT NO. 1 WINDOW - INSTALLATION - AMM B787-A-56-11-01-00A-720A-A.