Service difficulty report · Plate · 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
Plate
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 RIGHT SIDEPLATE HAS SURFACE CORROSION FROM STA 727G TO 727H RBL 23<[01] REMOVED CORROSION FROM AREA PER SRM 53-00-53-1A-2 (0.037' REMAINING THICKNESS). SIDEPLATE IS OUT OF LIMITS PER SRM 53-00-53-1A-2.;[02] CUT OUT AND REMOVED DAMAGED SECTION OF RH SIDEPLATE FROM STA 727F+10' TO STA 767 PER SRM 53-00-53-2R-5.;[03] DRILLED REPLACEMENT SECTION AND SPLICE OF RH SIDEPLATE FROM STA 727F+10' TO STA 767 PER SRM 53-00-53-2R-5. OK TO TREAT AND PAINT.;[04] TREATED AND PAINTED REPLACEMENT SECTION AND SPLICE OF RH SIDEPLATE FROM STA 727F+10' TO STA 767 PER SRM 51-20-01 AND AMM 51-21-72. OK TO INSTALL NUTPLATES AND ATTACH SPLICE TO REPLACEMENT SECTION.;[05] C/W INSPECTION OF CORRECTIVE ACTION STEP #4;[06] INSTALLED SPLICE TO REPLACEMENT SECTION PER SRM 51-40-02. INSTALLED ADHESIVE BOND NUTPLATES PER SRM 51-40-10 AT 1300 3JUL2023.;[07] INSTALLED SIDEPLATE REPAIR FROM STA 727F+10? TO STA 767 PER SRM 53-00-53-2R-510] REPAIRED RH SIDEPLATE FROM STA 727F+10? TO STA 767; RBL 23 PER SRM 53-00-53-2R-5.;[11] INSPECTED WORK PERFORMED

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