Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
June 23, 2022
Submitted
August 11, 2022
Operation
Air carrier
Aircraft
N951WN
Make and model
Boeing 7377H4
Aircraft serial
36665
Aircraft time
39,132 hours, 23,683 cycles
Part
Sidewall Support
Condition
Corroded
Location
Aft Cargo Bay
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

CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 21 BS 727B+10; BS 727B+14; BS 727C+6; BS 727C+7; BS 727D+6. / DAMAGE FOUND TO BE OUT OF LIMITS WITH REMAINING THICKNESS OF .035' OF ORIGINAL THICKNESS OF .040'. IAW SRM 53-60-53-0I-2 AND SRM 53-00-53-1A-2.;[03] DIAL DEPTH GAUGE USED IN CORRECTIVE ACTION 2 ID:ATS2473 S/N: UNKNOWN DUE:07/2022;[04] INSPECTED ACTION 1-3; VERIFIED MEASUREMENT TABLE;[05] FABRICATED ; LOCATED AND DRILLED NEW AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT ; SPLICES AT BS 727+4 TO BS 847 ; LBL 21 ; IAW SRM 53-00-53-2R-6 ; SRM 51-40-05-0G-0; DWG 146A7502; ID:0027;REV:- ; FROM BAC1496-377#7075T62; LOT#1490497-1; APPLIED CHEMICAL CONVERSION IAW AMM 51-21-41-370-802; OK TO APPLY PRIMER;[06] VERIFIED CORRECTIVE ACTION 5.;[07] APPLIED PRIMER ON FABRICATED PARTS AND SPLICE IAW SOPM 20-41-02. OK TO INSTALL SPLICE AT BS 727+10;[08] APPLIED PRIMER ON FABRICATED PARTS AND SPLICE IAW SOPM 20-41-02. OK TO INSTALL SPLICE AT BS 727+10;[09] VERIFIED CORRECTIVE ACTION STEPS 7 AND 8 COMPLETED;[10] INSTALLED SPLICE AT BS747+10 ON SIDEWALL SUPPORT LBL 21 IAW SRM 53-00-53-2R-6 PARAGRAPH 4.K TO 4.L AND DWG 146A7502 ID:0049 REV

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