Service difficulty report · Control Unit · Boeing 737890

Difficulty date
September 30, 2008
Submitted
October 7, 2008
Operation
Air carrier
Aircraft
N558AS
Make and model
Boeing 737890
Aircraft serial
35177
Aircraft time
8,756 hours, 2,557 cycles
Part
Control Unit
Part number
8300005604
Part serial
8152D
Condition
Failed
Location
E&E Bay
Part time
8,756 hours, 2,557 cycles
Stage of operation
UK
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

LEFT SIDE WINDOW OVERHEAT (C/B POPPED). INSPECTED C/B C392AND RESET IAW MM 20 60 01. PERFORMED FIM 30 41 00 810 814 FOUND 7 BUSS POWER FAULTS. PERFORMED FIM 30 41 00 810 816. SENSOR AT 326 OHMS NML MM 30 41 00 HEAT FILM AT 71 0 OHMS NML 30 41 21. REPLACED WHCU IAW MM 30 41 11 000 801, NO FURTHER DISCREPANCIES NOTED.