Service difficulty report · Crease Beam · Boeing 737*

Difficulty date
February 10, 2022
Submitted
March 15, 2022
Operation
Air carrier
Aircraft
N465WN
Make and model
Boeing 737*
Aircraft serial
33829
Aircraft time
59,870 hours, 35,575 cycles
Part
Crease Beam
Condition
Corroded
Location
Aft Fuselage
Stage of operation
UK
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 THE INNER CREASE BEAM BS 937 TO BS 1000 RBL-50 WL-208 / [01] REMOVED CORROISION ON ASD INNER CORD BS 937-BS 1000 RBL 50 WL 208 MAX MAT. LOSS 16'X2'X.018' ORIGINAL THICKNESS .080' FOUND TO BE OUT OF LIMITS I.A.W SRM 53-70-15-1A-1;[02] VERIFIED CORRECTIVE ACTION 1;[03] REMOVED ASD INNER CHORD IAW SRM 51-40-02;[04] LOCATED AND DRILLED NEW ASD MOP SILL P/N 147A8540U8 PO#822336 IAW SRM 51-40-05-0G-0 AND DWG# 147A8501 REV:B OK TO INSTALL;[05] VERIFIED CORRECTIVE ACTION #4;[06] INSTALLED INNER CREASE BEAM (ASD MOPSILL) IAW SRM 51-40-02 AND IAW DWG#147A8501;[07] VERIFIED CORRECTIVE ACTION #6;[08] VERIFIED TASK COMPLETE