Service difficulty report · Support · Boeing 7377H4

Difficulty date
March 31, 2022
Submitted
April 22, 2022
Operation
Air carrier
Aircraft
N769SW
Make and model
Boeing 7377H4
Aircraft serial
30588
Aircraft time
74,146 hours, 43,614 cycles
Part
Support
Part number
143A948535
Condition
Cracked
Location
Fwd 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 FWD CARGO BAY AFT BULKHEAD SUPPORT AT STA 500D; RBL 18 TO LBL 18; WL 156. / [01] THERE IS NO SRM ALLOWABLE DAMAGE FOR FCB AFT BULKHEAD SUPPORT. PART TO BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0;[02] VERIFIED ACTION 1;[03] REMOVED CORROSION AT STA 500D<BR><BR>LBL 1 0.005'<BR>LBL 2 0.003'<BR>LBL 9 0.004'<BR>LBL 17 0.003'<BR>LBL 18 0.004'<BR>RBL 1 0.003'<BR>RBL 2 0.003'<BR>RBL 9 0.004'<BR>RBL 14 0.005'<BR>RBL 18 0.006'<BR><BR>ORIGINAL MATERIAL THICKNESS : 0.071 ; THE DEEPEST DAMAGE : 0.006'. DAMAGE DOES NOT EXCEED 10% OF ORIG. MATERIAL THICKNESS. FOUND TO BE WITHIN LIMIT<BR><BR>CALIBRATION TOOL DEPTH GAUGE<BR>ID : ATS1225<BR>S/N : UNKNOWN<BR>DUE : 07/2022;[04] INSPECTED ACTION 3;[05] APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 51-20-01-0G-0 AND SOPM 20-41-02;[06] INSPECTION COMPLETE;[07] UPDATED MEASUREMENTS

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