Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
December 8, 2020
Submitted
January 13, 2021
Operation
Air carrier
Aircraft
N434WN
Make and model
Boeing 7377H4
Aircraft serial
32454
Aircraft time
60,441 hours, 35,783 cycles
Part
Floorbeam
Condition
Corroded
Location
Cabin
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

CORROSION FLOOR STRUCTURE FLOOR BEAM LOCATED BS 986.5 AT LEVEL RBL 43 AND LBL 43 WL 208 AT AFT GALLEY AREA. PERFORMED PERMANENT REPAIR ON FLOOR BEAM 986.5 UPPER HORIZONTAL TEE CAP SPLICE AFT GALLEY AREA, IAW EA NR 1-A53-7848 REV: KIT USED P/N 53100011-01. DUE TO REWORK EXCEEDED ALLOWABLE DAMAGE LIMITS, IAW SRM B737-700 53-70-51-1A-1 ALLOWABLE DAMAGE 1 PARAGRAPH 4H. MRT ON P1 TO P6 IS: 0.010' TOOL USED CALIPER P/N 500-193 S/N 1116081 DUE DATE 24SEP21.

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