Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
May 16, 2021
Submitted
July 1, 2021
Operation
Air carrier
Aircraft
N400WN
Make and model
Boeing 7377H4
Aircraft serial
27891
Aircraft time
66,325 hours, 39,077 cycles
Part
Floorbeam
Condition
Cracked
Location
Bs 332 Rbl 32
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

FWD WET AREA FOOR SUPPORT BEAM CRACKED @ FWD FLANGE FASTENER HOLE RBL 32 AND STA 332 ; / [01] PERFORMED HFEC AND CONFIRMED CRACK AT FWD FLANGE FASTENER HOLE OF FWD WET AREA FLOOR SUPPORT BEAM RBL 32 AND STA 332 IAW NDT PART 6;51-00-00 PROCEDURE 23. CRACK LENGTH : 0.393'.; [02] ITEM ENTER IN ERROR - WRONG STA - THIS ITEM WILL ACCOMPLISHED ON N/R # TTG8Q0052WF4; [03] ITEM ENTER IN ERROR - WRONG STA - THIS ITEM WILL ACCOMPLISHED ON N/R # TTG8Q0052WF4 - CUT OUT AND REMOVED THE DAMAGED FLANGES OF THE UPPER CHORD OF THE FLOOR BEAM AT STA 328 FROM RBL 1.1 TO RBL 64.6 PER B737-700 SRM 53-10-51-2R-7 FIG 205.

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