Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
April 25, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
38,285 hours, 23,370 cycles
Part
Sidewall Support
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

MULTIPLE AREAS OF CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 727B-767 WL 154-155.<[01] REMOVED CORROSION MULTIPLES AREAS ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 727B TO BS 767 WL 154-155; REWORKED AREA: L= 2.5' W= 1.2' D= 0.007' ORIGINAL THICKNESS 0.032' REMAINING MAT. 0.025' FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2;[02] VERIFIED CORRECTIVE ACTION ITEM 1; OUT OF LIMITS.;[03] LOCATED AND DRILLED AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 727B-767 WL 154-155 PER B737-700 DWG 146A7502 REV A.;[04] UPDATED CORRECTIVE ACTION 3. LOCATED AND DRILLED AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 727B-767 WL 154-155 PER B737-700 DWG 146A7502 REV A. SIDEWALL SUPPORT WILL BE INSTALL ON WORK CARD TTG8Q004A4L8.;[05] VERIFIED CORRECTIVE ACTION 4<BR><BR>VERIFIED MEASUREMENT TABLE

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