Service difficulty report · Floor Panel · Boeing 737*

Difficulty date
October 8, 2021
Submitted
November 4, 2021
Operation
Air carrier
Aircraft
N557WN
Make and model
Boeing 737*
Aircraft serial
30166
Aircraft time
66,485 hours, 32,340 cycles
Part
Floor Panel
Condition
Corroded
Location
Fuselage
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

AFT CARGO BAY FLOOR PNL 140DF HAS CORROSION ALONG AFT EDGE BS 947 RBL 22 - LBL 22 WL 157 ; / [01] FABRICATED NEW ACB FLOOR PNL 140DF FROM 2024T3#0.071X48SH-C; LOT# 1461004-1 IAW BOING DWG 435A2610 AND BOEING DWG 435A2600; [02] PRIOR TO MAINTENANCE; BLENDED DAMAGE IN AREA OF L=12'X W=4' X D=.012'. FOUND TO BE OUT OF LIMITS WITH REMAINING THICKNESS OF .059' OF ORIGINAL THICKNESS OF .071' IAW SRM 53-00-53-1A-1; [03] VERIFIED FLOOR PANEL DAMAGE OUT OF LIMITS. VERIFIED FABRICATION OF NEW FLOOR PANEL PER BOEING DWG 435A2610 AND BOEING DWG 435A2600