Service difficulty report · Splice · Boeing 7378H4

Difficulty date
June 24, 2023
Submitted
July 28, 2023
Operation
Air carrier
Aircraft
N8541W
Make and model
Boeing 7378H4
Aircraft serial
63599
Aircraft time
19,964 hours, 9,843 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 COMPARTMENT FLOOR STRUCTURE LEFT SIDEPLATE HAS SURFACE CORROSION FROM STA 727I TO 727J LBL 23<[01] REMOVED CORROSION FROM AREA PER SRM 53-00-53-1A-2 (0.034' REMAINING THICKNESS). SIDEPLATE IS OUT OF LIMITS PER SRM 53-00-53-1A-2.;[02] CUT AND REMOVED DAMAGED SECTION OF LEFT SIDEPLATE FROM STA 727H+10 TO STA 787+10 I.A.W SRM 53-00-53-2R-5.;[03] DRILLED REPLACEMENT SECTION AND SPLICES OF LH SIDEPLATE FROM STA 727H+10' TO STA 787+10? PER SRM 53-00-53-2R-5. TREATED AND APPLIED PRIMER TO REPAIR PARTS PER SRM 51-20-01 AND AMM 51-21-72. OK TO INSTALL NUTPLATES AND ATTACH SPLICE TO REPLACEMENT SECTION.;[04] INSPECTION VERIFIED CORRECTIVE ACTION STEP 3.;[05] INSTALLED SPLICES TO REPLACEMENT SECTION PER SRM 51-40-02. INSTALLED ADHESIVE BOND NUTPLATES PER SRM 51-40-10 AT 0430 7JUL2023.09] INSTALLED FWD REPAIR SPLICE ON LH SIDEPLATE AT STA 727H+10'; LBL 23 PER SRM 53-00-53-2R-5.;[10] INSPECTED WORK PERFORMED ON C/A #9;[11] COMPLETED INSTALLATION OF REPAIR SECTION AND SPLICES OF LH SIDEPLATE FROM STA 727H+10' TO STA 787+10? PER SRM 53-00-53-2R-5.;[12] C/W INSPECTION OF STEP #11;[13] REPAIRED PER SRM 53-00-53-2R-5.;[14] C/W INSPECTION

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