Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
November 3, 2023
Submitted
December 7, 2023
Operation
Air carrier
Aircraft
N8556Z
Make and model
Boeing 7378H4
Aircraft serial
63583
Aircraft time
19,574 hours, 9,791 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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

TOP SURFACE OF FLOOR BEAM @STA 947; LBL 52 HAS CORROSION OUTBOARD SIDE OF LAV MOUNT TOP SURFACE OF FLOOR BEAM @STA 947 LBL 52 HAS CORROSION OUTBOARD SIDE OF LAV MOUNT<[01] REMOVED CORROSION PER SRM 51-10-02. FOUND AREA OUT OF LIMITS PER SRM 53-70-51-1A-1.;[02] ACCOMPLISHED HFEC SURFACE AND HOLE PROBE INSP. OF TOP FLANGE OF 947 FLOOR BEAM LBL 52' PER NDT PART 6 51-00-00 PROC. 23 AND 51-00-00 PROC. 16 NO DEFECTS NOTED;[03] REMOVED ADDITIONAL.002 MATERIAL PER SRM 51-10-02 AND SRM 53-70-51-2R-8. FLAP PEENED DAMAGED AREA PER SOPM 20-10-03.;[04] FABRICATED SHIM PER SRM 53-70-51-2R-8.;[05] REMOVED ADDITIONAL.002 MATERIAL PER SRM 51-10-02 AND SRM 53-70-51-2R-8. FLAP PEENED DAMAGED AREA PER SOPM 20-10-03. FABRICATED SHIM PER SRM 53-70-51-2R-8.;[06] OK TO INSTALL. RII INSPECTION C/W.;[07] RII INSPECTION C/W.;[08] C/W INSPECTION.;[09] REPAIRED 947 FLOORBEAM LBL 52 PER SRM 53-70-51-2R-8;[10] C/W INSPECTION.

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