Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
April 9, 2024
Submitted
May 2, 2024
Operation
Air carrier
Aircraft
N8685B
Make and model
Boeing 7378H4
Aircraft serial
36723
Aircraft time
26,629 hours, 13,050 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Bs 986
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

STA 986.5 FLOOR BEAM UPPER FLANGE HAS CORROSION AROUND NUTPLATE HOLE AT LBL 43.<[01] BLENDED CORROSION PER SRM 51-10-02. DAMAGE REMOVAL FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1.;[02] BLENDED CORROSION PER SRM 51-10-02. DAMAGE REMOVAL FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1.;[03] REMOVED DAMAGE STA 986.5 FLOOR BEAM LBL 43 PER SRM 53-70-51-2R-6 ALTERNATIVE 4FLAP PEENED REPAIR AREA PER SRM 53-70-51-2R-6 PAR 4.E MATERIAL VERIFICATION FOR REPAIR PART [1] STRAP IS .100X7075T6 BN 308391; REPAIR PART [2] ANGLE BAC1490-2887 BN 1980746; REPAIR PART [3] FILLER USING A CUT OUT OF TOP OF BEAM BAC1518-1211 BN 1988076 PER SRM 53-70-51-2R-6 ALTERNATIVE 4 TABLE 204 AND SRM 53-70-51-0I-1 TABLE 6;[09] FABRICATED; LOCATED; DRILLED; AND DEBURRED REPAIR PARTS [1] STRAP; [2] ANGLE; [3] FILLER PER SRM 53-70-51-2R-6 ALTERNATIVE 4;[10] VERIFIED CORRECTIVE ACTION STEPS #8 & #9. INSTALLED REPAIR PARTS PER SRM 53-70-51-2R-6 ALTERNATE 4.;[14] RII: INSPECTED WORK ACCOMPLISHED IN C/A #11 AND #12. NICHOLAS AYLOR (TECHNICIAN); 13-APR-2024 14:03 UTC EDIT C.A. 11 TREATED AND APPLIED 2 COATS OF PRIMER TO REPAIR PARTS AND FLOOR BEAM REPAIR AREA PER SRM 53-70-51-2R-6 ALTERNATIVE 4.;[15] RII: INSPECTED WORK ACCOMPLISHED IN C/A # 13. TIMOTHY ENRIGHT (TECHNICIAN); 17-APR-2024 13:21 UTC INSTALLED REPAIR PARTS PER SRM 53-70-51-2R-6 ALTERNATE 4.;[16] RII: INSPECTED WORK PERFORMED. REPAIRED PER SRM 53-70-51-2R-6 ALTERNATE 4. SEE C/A?S AND STEPS FOR ALL WORK PERFORMED.

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