Service difficulty report · Support · Boeing 737*

Difficulty date
October 27, 2021
Submitted
November 15, 2021
Operation
Air carrier
Aircraft
N915WN
Make and model
Boeing 737*
Aircraft serial
36888
Aircraft time
45,503 hours, 27,299 cycles
Part
Support
Part number
147A750117
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 RBL 22; WL 153; STA 887+7; AND STA 907+2. ; / [01] VERIFIED COMPLETE STEPS 1; 2.; [02] CORRECTION : DAMAGE IS ON FLOOR TO SIDEWALL SUPPORT AT RBL 22; STA 887 +7 AND STA 907 +2; INSTEAD OF SHIELD.; [03] FABRICATED ACB RH FLOOR TO SIDE WALL SUPPORT ANGLE BS 867 TO BS 947 RBL 22 WL 153 MADE FROM EXTRUSION BAC1496-377#7075T62 LOT#5095753-1 IAW SRM 51-40-05-0G-0 ; DWG#147A7501 AND DWG#146A7502 OK TO TREAT AND PRIME; [04] VERIFIED FABRICATED ACB RH FLOOR TO SIDE WALL SUPPORT ANGLE BS 867 TO BS 947 RBL 22 WL 153 MADE FROM EXTRUSION BAC1496-377#7075T62 LOT#5095753-1 IAW SRM 51-40-05-0G-0 ; DWG#147A7501 AND DWG#146A7502.<BR>VERIFIED OK TO TREAT AND PRIME.; [05] APPLIED CHEMICAL CONVERSION COATING AND PRIMED ACB FLOOR TO SIDE WALL SUPPORT ANGLE BS 867 TO BS947 RBL 22 WL 153 IAW SRM 51-20-01-0G-0 AND SOPM 20-41-02 ; INSTALLATION WILL BE ACCOMPLISHED WITH CUSTOMER MOC CARD # TTG8Q004E68F; [06] VERIFIED APPLIED CHEMICAL CONVERSION COATING AND PRIMED ACB FLOOR TO SIDE WALL SUPPORT ANGLE BS 867 TO BS947 RBL 22 WL 153 IAW SRM 51-20-01-0G-0 AND SOPM 20-41-02. <BR>VERIFIED INSTALLATION WILL BE ACCOMPLISHED WITH CUSTOMER MOC CARD # TTG8Q004E68F.