Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
July 28, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 986 Lbl43
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

CORROSION ON FLOOR BEAM AT AFT WET AREA BS 986.5 LBL 43 WL 208 ; / [20] INSTALLED REPAIR PARTS 4 EA ANGLES AND T FLOOR BEAM SECTION; INSTALLED NEW SHEAR TIE AT FLOOR BEAM BS 986.5 BETWEEN LBL 7.9 TO LBL 50 PER SRM 53-70-51-2R-4 REPAIR 4; [21] VERIFIED INSTALLED REPAIR PARTS 4 EA ANGLES AND T FLOOR BEAM SECTION; INSTALLED NEW SHEAR TIE AT FLOOR BEAM BS 986.5 BETWEEN LBL 7.9 TO LBL 50 PER SRM 53-70-51-2R-4 REPAIR 4; [22] ACCOMPLISHED PERMANENT REPAIR ON FLOOR BEAM AFT WET AREA BS986.5 RBL20-RBL51 WL208 IAW SRM 53-70-51-2R-4 REPAIR#4; IS DOCUMENTED ON TASK CARD# TTG8Q005Z33B; [23] UPDATE STEP 22.<BR>ACCOMPLISHED PERMANENT REPAIR ON FLOOR BEAM AFT WET AREA BS986.5 LBL1-LBL51 WL208 IAW SRM 53-70-51-2R-4 REPAIR#4;

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