Service difficulty report · Support · Boeing 7377H4

Difficulty date
November 4, 2021
Submitted
December 3, 2021
Operation
Air carrier
Aircraft
N206WN
Make and model
Boeing 7377H4
Aircraft serial
34011
Aircraft time
52,875 hours, 31,083 cycles
Part
Support
Condition
Cracked
Location
Bs 782
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

CRACK ON FLOOR TO SIDE WALL SUPPORT AT AFT CARGO BAY LBL 21 WL 155 BS 782. ; / [01] UPON FURTHER INVESTIGATION CRACK FOUND TO BE CORROSION ON ACB L/H BS 727-847 AT BS 782 MEASURED 3'L X 2'W AND 0.040' DEEP; 100% MATERIAL LOSS; PART FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2; [06] FABRICATED REPLACEMENT FLOOR TO SIDEWALL SUPPORT USING BAC1496-377#7075T62 LOT: 5093799-1 IAW SRM 51-40-05-0G-0; SRM 53-00-53-2R-5 SECTION 4. D-H AND DWG 146A7502 ID: 0027 REV:-. FABRICATED FLOOR TO SIDEWALL SUPPORT SPLICE REPAIR BS 747+10' USING BAC1496-377#7075T62 LOT: 5093799-1 IAW SRM 53-00-53-2R-5 SECTION 4. D-H; SRM 51-40-05 AND SRM 51-40-08. APPLIED CHEMICAL CONVERSION COATING TO SPLICE AND SIDEWALL SUPPORT IAW SOPM 20-41-02. OK TO APPLIED PRIMER TO SPLICE AND SIDEWALL SUPPORT; [07] VERIFIED CORRECTIVE ACTION STEP 6. OK TO PRIMER.; [08] OK TO INSTALL FLOOR TO SIDEWALL SUPPORT SPLICE REPAIR; [09] VERIFIED; [10] APPLIED PRIMER IAW SOPM 20-41-02 <BR><BR>OK TO INSTALL SPLICE; [11] VERIFIED; [12] VERIFIED CORRECTIVE ACTIONS 8-11.<BR><BR>PRIMER APPLIED TO REPAIR PARTS; OK TO INSTALL SPLICE REPAIR.; [13] INSTALLED FLOOR TO SIDEWALL SUPPORT SPLICE REPAIR IAW SRM 53-00-53-2R-5 AND SRM 51-40-02. INSTALLED NUT PLATES AT 13-NOV-2021 09:03 UTC IAW SRM51-40-10-2R-0; [14] VERIFIED CORRECTIVE ACTION STEP 13.

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