Service difficulty report · Beam · Boeing 7377H4

Difficulty date
January 12, 2023
Submitted
February 10, 2023
Operation
Air carrier
Aircraft
N279WN
Make and model
Boeing 7377H4
Aircraft serial
32532
Aircraft time
52,335 hours, 31,548 cycles
Part
Beam
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

MAIN CABIN AFT WET AREA CORROSION AT FLOOR BEAM UPPER SURFACE STA 986.5 LBL 42'<[01] REMOVED CORROSION AT MAIN CABIN AFT WET AREA AT FLOOR BEAM UPPER SURFACE STA 986.5 LBL 42' REF SRM 51-10-02-0G-0.<BR><BR>ORIGINAL MATERIAL 0.150'; REMAINING MATERIAL 0.090'; MATERIAL REMOVED 0.060'. THEREFORE; THE REWORKED AREA IS OUT OF LIMITS REF SRM 53-70-51-1A-1; FIGURE103; DETAIL C] FABRICATED ONE REPAIR STRAP FROM 0.100' 7075-T6 CLAD SHEET; ONE REPAIR ANGLE FROM BAC1490-2887 7075-T6 AND ONE FILLER FROM 0.150' 7075-T6 REF SRM 53-70-51-2R-6 REPAIR 6; TABLE 204; ALTERNATIVE 4. JOB ACCOMPLISHED BY RICARDO SAMANIEGO EMP. #35463<BR><BR>ACCOMPLISHED 125 MICROINCHES SURFACE TEST ON REPAIR PARTS REF SRM 51-20-13-0G-0. TOOL ID# 172331. JOB ACCOMPLISHED BY RICARDO SAMANIEGO EMP. #35463;[19] LOCATED AND DRILLED REPAIR PARTS AND REPAIR AREA REF SRM 53-70-51-2R-6 REPAIR 6; FIGURE 205; ALTERNATIVE 4 AND SRM 51-40-05-0G-0. JOB ACCOMPLISHED BY RICARDO SAMANIEGO EMP. #35463[26] INSTALLED REPAIR PARTS (REPAIR STRAP; REPAIR ANGLE AND FILLER) AND NUTPLATE AT FLOOR BEAM UPPER SURFACE STA 986.5 LBL 42' REF SRM 53-70-51-2R-6 REPAIR 6; ALTERNATIVE 4; FIGURE 205<BR><BR>MIXED SEALANT 21:00 PM; APPLIED SEALANT 21:15PM; SQUEEZE OUT 21:30PM

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