Service difficulty report · Floorbeam · Boeing 73776N

Difficulty date
November 13, 2023
Submitted
December 15, 2023
Operation
Air carrier
Aircraft
N7722B
Make and model
Boeing 73776N
Aircraft serial
32668
Aircraft time
55,418 hours, 28,473 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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*** MAIN CABIN FWD WET AREA FLOOR BEAM UPPER CHORD CORRODED AT STA 294.5 BETWEEN LBL4 TO RBL12; WL208.1.<[01] ACCOMPLISHED PERMANENT REPAIR CATEGORY A AT FWD WET AREA FLOOR BEAM STA 294.5 AS PER B737-700 SRM 53-10-51-2R-16 REPAIR 16; ALTERNATIVE 1; FIGURE 203.;[02] CERTIFIED WORK STEPS ACCOMPLISHED FOR ACCOMPLISHED PERMANENT REPAIR CATEGORY A AT FWD WET AREA FLOOR BEAM STA 294.5 AS PER B737-700 SRM 53-10-51-2R-16 REPAIR 16; ALTERNATIVE 1; FIGURE 203.;[03] CERTIFIED.

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