Service difficulty report · Angle · Boeing 7378H4

Difficulty date
November 17, 2021
Submitted
December 14, 2021
Operation
Air carrier
Aircraft
N8674B
Make and model
Boeing 7378H4
Aircraft serial
36734
Aircraft time
20,443 hours, 9,348 cycles
Part
Angle
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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

FWD CARGO COMP.LH Z-ANGLE CORRODED AROUND FASTNER HOLES STA.500H-500I LBL25 WL158 #185-012 / [01] BEGAN REMOVING CORROSION ON LH Z ANGLE AT STA 500H-500I LBL 25 AND WL 158; ORIGINAL .040' LOSS OF .005' REMAINING .035' FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2. CORROSION STILL EXISTS. TOOLING 36646 CAL DUE 10-06-22; [02] INSPECTION VERIFIED STEP 1; [03] REMOVED Z-ANGLE ON LEFT SIDE; STA 500D+10 TO STA 500I; IAW SRM 51-40-02.; [04] VERIFY MATERIAL FOR REPAIR SPLICE; AND REPLACEMENT SECTION OF Z-ANGLE FOR STA 500D + 10' TO STA 500I TO BE BAC1496-444 7075-T62 ATAG # A67396 IAW SRM 53-00-53-2R-5 REPAIR 5 TABLE 201.; [05] STEP 4 OK; [06] FABRICATED; LOCATED AND DRILLED REPLACEMENT 'Z' CHANNEL SIDEPLATE AND REPAIR SPLICE IAW SRN 53-00-53-2R-5 REPAIR 5 FIG 202.; [07] STEP 6 OK. OK TO TREAT AND FIND; [08] STEP 6 OK. OK TO TREAT AND PRIME; [09] TREATED AND PRIMED REPAIR PARTS I/A/W SRM 53-00-53-2R-5 STEPS I AND J; [10] VERIFIED TREAT AND PRIME<BR><BR>OK TO INSTALL SPLICE; NOT PLATES AND CIC; [11] INSTALLED SPLICE PLATE; INSTALLED NUT PLATES; AND APPLIED CIC TO Z-ANGLE IAW SRM 53-00-53-2R-5 REPAIR 5.; [12] ISPECTION CW STEP 11; [13] INSPECTION CW STEP 11; [14] NEED OK TO INSTALL NEW SIDE PLATE - Z-ANGLE STA500D TO STA 500I; [15] OK TO INSTALL Z-ANGLE; [16] COMPLETED INSTALL OF NEW Z-ANGLE L/H SIDE STA 500D TO STA 500I IAW SRM 51-40-02-0G-0 ALSO SRM 53-00-53-2R-5 APPLIED CIC TO AREA IAW AMM 51-21-91-701; [17] VERIFIED STEP 16.; [18] AUDIT C/W

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