SDR CALS097001

Service difficulty report · Shield · Boeing 747409

Difficulty date: January 18, 2008
Submitted: January 18, 2008
Operation: Air carrier
Aircraft: N18275
Make and model: Boeing 747409
Aircraft serial: 24312
Aircraft time: 63,772 hours, 13,659 cycles
Engine: Cont IO520*
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Shield
Condition: Cracked
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

CHI FOUND A CRACKED DRIPSHIELD UNDER G1 FLOOR DURING AIRCRAFT B-18275 HEAVY MAINTENANCE OF 3D CHECK. THIS DRIPSHIELD HAD A 3 INCH DIAMETER HOLE WITH NUMEROUS CRACKS LOCATED IN AN AREA APPROXIMATELY 18 INCHES BY 8 INCHES. THE DRIPSHIELD IS INTENDED TO PROTECT ELECTRONIC EQUIPMENT IN E1/E2 SHELVES FROM WATER. THE DRIPSHIELD ARE SHOWN IN THE 744 IPC SECTION (ALSO CALLED MOISTURE SHROUDS AND GUTTER ASSEMBLIES).