Service difficulty report · Control Unit · Boeing 7377H4

Difficulty date
January 9, 2021
Submitted
January 12, 2021
Operation
Air carrier
Aircraft
N731SA
Make and model
Boeing 7377H4
Aircraft serial
27863
Aircraft time
74,112 hours, 43,724 cycles
Part
Control Unit
Part number
2315
Part serial
8006
Condition
Arced
Location
Windsheild Heat
Stage of operation
NR
How discovered
9
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

L1 WINDOW ARCED FOR 20 SECONDS AND CRACKED OUTER PANE. REMOVED AND REPLACED LT NR 1 WINDOW AND LT FWD WINDOW HEAT CONTROL UNIT, REF AMM 56-11-11 AND 30-41-11. LEAK AND OPERATIONS CHECK GOOD FOR CAT III UPGRADE SEE LOG PAGE #1238649POS LT 1 PN OFF/ON 5-89354-319 SN OFF 18288H1888 SN ON 18319H5082 POS LT FWD PN OFF/ON 231-5 SN OFF 8006 SN ON 8081.

More about the Boeing 737-7H4