Service difficulty report · Support · Boeing 7377H4

Difficulty date
August 11, 2021
Submitted
August 31, 2021
Operation
Air carrier
Aircraft
N965WN
Make and model
Boeing 7377H4
Aircraft serial
36677
Aircraft time
32,936 hours, 20,041 cycles
Part
Support
Condition
Corroded
Location
Bs 727-847
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 COMPARTMENT FLOOR TO SIDEWALL SUPPORT FROM B.S. 727 TO 847; LBL 23; W.L. 156 ; / [01] REMOVED ACB FLOOR TO SIDEWALL SUPPORT L/H FROM BS 727-847 PER SRM 51-40-02.; [02] REMOVED ACB FLOOR TO SIDEWALL SUPPORT L/H FROM BS 727-847 PER SRM 51-40-02.; [03] FABRICATED ACB FLOOR TO SIDEWALL SUPPORT BS 727- 847; LBL 23 FROM MATERIAL BAC1496-377 #7075T62 LOT#1464391-1; IAW SRM 51-40-05; DWG#146A7500.<BR>FABRICATED SPLICE ANGLE B/N BS 727E-747 FROM MATERIAL BAC1496-377 #7075T62 LOT#1464391-1 PER SRM 53-00-53-2R-5.<BR>APPLIED CHEMICAL CONVERSION COATING PER SRM 51-20-01. OK TO PRIME; [04] REMOVED CORROSION FROM ACB FLOOR TO SIDEWALL SUPPORT AT BS 767; LBL 23; MATERIAL LOSS MORE THAN 20% FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2.; [05] TOOLING USED; DIAL DEPTH GAUGE ID:ATS2473; S/N:UNKNOWN; [06] VERIFIED REMOVED ACB FLOOR TO SIDEWALL SUPPORT L/H FROM BS 727-847 PER SRM 51-40-02 DUE TO DAMAGE BEING OUT OF LIMITS.; [07] VERIFIED FABRICATED ACB FLOOR TO SIDEWALL SUPPORT BS 727- 847; LBL 23 FROM MATERIAL BAC1496-377 #7075T62 LOT#1464391-1; IAW SRM 51-40-05; DWG#146A7500. <BR>FABRICATED SPLICE ANGLE B/N BS 727E-747 FROM MATERIAL BAC1496-377 #7075T62 LOT#1464391-1 PER SRM 53-00-53-2R-5. <BR>APPLIED CHEMICAL CONVERSION COATING PER SRM 51-20-01. OK TO PRIME; [08] APPLIED PRIMER IAW AMM 51-21-72-370-804; [09] VERIFIED APPLIED PRIMER IAW AMM 51-21-72-370-804; [10] OK TO INSTALL REPAIR PARTS

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