Service difficulty report · Splice · Boeing 7378H4

Difficulty date
May 26, 2023
Submitted
June 19, 2023
Operation
Air carrier
Aircraft
N8669B
Make and model
Boeing 7378H4
Aircraft serial
36655
Aircraft time
26,834 hours, 12,722 cycles
Part
Splice
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
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

AFT CARGO FLOOR STRUCTURE: CORROSION ON THE UPPER SURFACE OF FLOOR SUPPORT BEAM. LOCATED AT STA 787 RBL 15 ABOVE STR 26R. MARKED. SEE ATTACHED IMAGES.<[01] COMPLIED WITH TOOL REQUIREMENT.;[02] COMPLIED WITH MEASUREMENTS.;[03] REMOVED CORROSION FROM AREA PER SRM 53-00-53-1A-2 (0.065'REMAINING THICKNESS). SUPPORT BEAM (TIE-DOWN TRACK) IS OUT OF LIMITS PER<BR>SRM 53-00-53-1A-2.;[04] DRILLED; DE-BURRED; TREATED AND PRIMED CUT AREAS ON REPLACEMENT SECTION AND SPLICE PER SRM 53-00-53-2R-3 FROM STA 747 + 10 TO 887 + 4. OK TO INSTALL.;[05] INSPECTED WORK PERFORMED ON C/A #3 AND C/A #4;[06] INSTALLED REPLACEMENT SECTION AND SPLICE PER SRM 53-00-53-2R-3 FROM STA 747 + 10 TO 887 + 4.;[07] INSTALL INSPECTED SEE INDIVIDUAL SIGNOFFS FOR ALL WORK COMPLETED

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