Service difficulty report · Sidewall Support · Boeing 737752

Difficulty date
August 15, 2023
Submitted
September 6, 2023
Operation
Air carrier
Aircraft
N7886A
Make and model
Boeing 737752
Aircraft serial
35122
Aircraft time
52,212 hours, 27,316 cycles
Part
Sidewall Support
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT ANGLE AT STA: 500A+2; 500A+6; 500A+10; & 500B+18; WL 156; RBL 24.5< FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2<REMOVED AND REPLACED NEW FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-02-0G-0G AND DWG 143A7500 ID:0071 REV:-;[14] REMOVED DAMAGE AT<BR>STA 500A+2 0.006 (OUT OF LIMIT)<BR>STA 500A+6 0.008 (OUT OF LIMIT)<BR>STA 500A+10 0.010 (OUT OF LIMIT)<BR>STA 500B+18 0.007 (OUT OF LIMIT)<BR><BR>ORIGINAL MATERIAL THICKNESS : 0.040; THE DEEPEST DAMAGE : 0.010 (AT STA 500A+10); REMAINING THICKNESS : 0.030. ALL DAMAGE EXCEED 10% OF ORIGINAL THICKNESS. FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 FABRICATED NEW FLOOR TO SIDEWALL SUPPORT MATERIAL USING BAC1496-444#7075T662 .040 LOT#:1509343-1 IAW SRM 51-40-05-0G-0; SRM 51-40-08-0G-0; AND DWG 143A7501 ID:0114 REV:-<BR><BR>APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 51-20-01-0G-0 AND SOPM 20-41-02<BR><BR>APPLIED BMS 10-11 TYPE 2 ENAMEL COATING (WHITE PAINT) IAW SOPM 20-41-02<BR><BR>REMOVED AND REPLACED NEW FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-02-0G-0G AND DWG 143A7500 ID:0071 REV:-;[