Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
July 6, 2021
Submitted
August 19, 2021
Operation
Air carrier
Aircraft
N941WN
Make and model
Boeing 7377H4
Aircraft serial
36647
Aircraft time
39,425 hours, 23,903 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 987 Rbl 50
Stage of operation
IN
How discovered
V
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

PASSENGER CABIN FLOOR;STA 987 FLOOR BEAM CORRODED AROUND FASTNER HOLE RBL 50 WL208 ; / [01] REMOVED NUT PLATE I.A.W SRM 51-4-02-0G-0; [02] REMOVE CORROSION AND VISUALLY INSPECTED AREA WITH 10X MAGNIFIER NO DEFECTS NOTED I.A.W SRM53-70-51-1A-1; [03] VERIFIED MATERIAL LOOSE ORIGINAL .150 REMOVED .052 REMAIN .098 ALLOWABLE 10% FOUND OUT OF LIMITS USED AAR TOOL#36647 DUE 05/19/2022 I.A.W SRM 53-70-51-01-0 AND SRM53-70-51-1A-1; [44] C.I.CED REPAIR AREA I.A.W SRM53-70-51-2R-4; [45] REMOVED CORROSION AT MAIN CABIN STA987 RBL50 FASTENER HOLE I.A.W WITH SRM53-70-51-1A-1. VERIFIED MATERIAL LOOSE ORIGINAL .150 REMOVED .052 REMAIN .098 ALLOWABLE 10% FOUND OUT OF LIMITS I.A.W SRM53-70-51-1A-1.<BR>REPAIRED TCAP FROM RBL35 TO RBL64 I.A.W SRM53-70-51-2R-4.; [46] COMPLETED PARTS USED BLOCK; [47] VERIFIED ITEMS 44 ; 45<BR>AUDIT C/W; [48] AUDIT C/W

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