Service difficulty report · Support · Boeing 7377H4

Difficulty date
June 16, 2021
Submitted
July 12, 2021
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
32,578 hours, 19,816 cycles
Part
Support
Condition
Corroded
Location
Bs 727b-767
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 FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727B - BS767 RBL20 WL156. ; / [01] REMOVED ACB FLOOR TO SIDEWALL SUPPORT R/H BS 727-767 RBL 20 IAW SRM 51-40-02; [02] VERIFIED REMOVED; [03] RECEIVED NEW ZEE ASSEMBLE LOT #1460159; [04] LOCATED AND DRILLED NEW ASSEMBLY FLOOR SUPPORT AT AFT CARGO BAY BS 727 ;RBL 20 ; WL 156 IAW SRM 51-40-05-0G-0 AND DWG 146A7500; [05] VERIFIED; [06] VERIFIED LOCATE AND DRILL UP ONLY; NO AMT UPDATES FOR CORROSION DAMAGE AND LIMITS; [07] REMOVED .009' MATERIAL FROM AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT BS 727B - BS 767 RBL 20 WL 156 FROM ORIGINAL THICKNESS OF .040'. FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2; [08] VERIFIED DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-00-53-1A-2; [09] OK TO INSTALL ACB FLOOR TO SIDEWALL SUPPORT BS 727-767 RBL 20 WL 156; [10] REQUEST OK TO INSTALL FLOOR TO SIDEWALL SUPPORT; [11] VERIFIED CIC'ED ON ACB FLOOR TO SIDEWALL SUPPORT BS 727-767 RBL 20 WL 156; [12] VERIFIED NO OTHER DEFECTS WITH IN WORK AREA.<BR><BR>OK TO INSTALL FLOOR TO SIDEWALL SUPPORT; [13] INSTALLED ACB FLOOR TO SIDEWALL SUPPORT BS 727-767 RBL 20 WL 156 IAW SRM 51-40-02; DWG# 146A7500 & 146A7502.; [14] VERIFIED INSTALL OF ACB R/H FLOOR TO SIDEWALL SUPPORT; [15] SIGNED FOR PART USED; [16] VERIFIED INSTALL OF ACB R/H FLOOR TO SIDEWALL SUPPORT BS 727-767 RBL 20 WL 156

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