Service difficulty report · Scuff Plate · Boeing 73776Q

Difficulty date
April 21, 2023
Submitted
May 8, 2023
Operation
Air carrier
Aircraft
N551WN
Make and model
Boeing 73776Q
Aircraft serial
30280
Aircraft time
66,624 hours, 41,198 cycles
Part
Scuff Plate
Condition
Cracked
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

FWD CARGO BAY AFT CORNER SCUFF PLATE IS CRACKED<[01] WELDED CRACKED RADIUS ON FWD CARGO BAY AFT CORNER SCUFF PLATE USING ER4043 FILLER ROD LOT NUMBER 1131216 PER SRM 53-30-15-2R-1 PARA 4.B. (2) AND (4)<BR>EQUIP USED: WELDING MACHINE E10583. CAL DUE 01/2024;[02] VERIFIED CORRECTION ACTION ITEM 1. AND STEP 1.;[03] ITEM 1 IS REJECTED DUE TO WRONG REFERENCE USED;[04] UPON FURTHER INVESTIGATION FOUND ACTION ITEM TO HAVE THE CORRECT REFERENCE. STEPS 1 AND 2 WERE GENERATED IN ERROR;[05] PT INSPECTED AREA IAW SOPM 20-20-02. <BR>NO CRACKS NOTED. <BR>EQUIP USED: <BR>-RADIOMETER ID: ATS2504-A; B; C CAL DUE: 05/23;[06] SANDED WELD REPAIR AREA PER SRM 53-30-15-2R-1 PARA.4.B. (5);[07] VERIFIED CORRECTION ACTION 6.;[08] OK TO APPLY CHEMICAL CONVERSION COATING AND PRIMER;[09] OK TO APPLY CHEMICAL CONVERSION COATING AND PRIMER GIVEN.;[10] APPLIED CHMICAL CONVERSION COATING AND PRIMER PER AMM#51-21-41 AND AMM#51-21-72-370-804;[11] VERIFIED CORRECTIVE ACTION 10.;[12] OK TO INSTALL FWD CARGO BAY AFT CORNER SCUFF PLATE;[13] VERIFIED CORRECTION ACTION ITEM 12; OK TO INSTALL.;[14] INSTALLED FWD CARGO BAY AFT CORNER SCUFF PLATE PER AMM#53-11-02-420-801 STEPS 3.F.(2) USING TOOLING TORQUE WRENCH ID:ATS2035 S/N:UKNOWN DUE:01/31/24;[15] VERIFIED CORRECTION ACTION 14 CARD COMPLETE.

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