Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
May 25, 2023
Submitted
June 19, 2023
Operation
Air carrier
Aircraft
N8669B
Make and model
Boeing 7378H4
Aircraft serial
36655
Aircraft time
26,834 hours, 12,722 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

AFT GALLEY STA. 987 FLOORBEAM RBL 43 HAS CORROSION AROUND NUT-PLATE HOLE.<[01] CORROSION DAMAGE OUT OF LIMITS PER SRM 53-70-51-1A-1;[02] VERIFIED CORRECTIVE ACTION STEP #1;[03] CUT OUT DAMAGE AREA PER SRM 53-70-51-2R-6 REPAIR ALTERNATIVE 4.;[04] PERFORMED HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION ALONG THE CUT EDGES NO CRACKS FOUND; PER 737 NDT PART 6; 51-00-00; PROCEDURE 23;[05] RII: VERIFIED DAMAGE CUT OUT ACCOMPLISHED IN C/A #3. GEOFFREY SNYDER (TECHNICIAN); 26-MAY-2023 08:27 UTC CUT OUT DAMAGED AREA PER SRM 53-70-51-2R-6 REPAIR ALTERNATIVE 4.;[06] FLAP PEENED CUT EDGES PER SOPM 20-10-03;[07] C/W INSPECTION OF STEP #6;[08] PERFORMED HFEC OF ONLY EXISTING FASTENER HOLE IN REPAIR PER NDT MANUAL PART 6 51-00-00 PROCEDURE 16. NO DEFECTS NOTED;[09] FABRICATED REPAIR PARTS IAW SRM 53-70-51-2R-6 REPAIR ALTERNATE 4.;[10] INSPECTION C/W FABRICATED REPAIR PARTS IAW SRM 53-70-51-2R-6 REPAIR ALTERNATE 4;[11] APPLIED CHEMICAL CONVERSION COATING TO REPAIR PARTS AND CUTOUT PER SRM 51-20-01;[12] INSPECTION C/W APPLIED CHEMICAL CONVERSION COATING TO REPAIR PARTS AND CUTOUT PER SRM 51-20-01;[13] PRIMED REPAIR PARTS AND CUT OUT AREA PER SOPM 20-41-02;[14] INSPECTED PRIMED REPAIR PARTS AND CUT OUT AREA. OK TO INSTALL REPAIR PARTS.;[15] INSTALLED REPAIR PER SRM 53-70-51-2R-6;[16] INSPECTED INSTALLED REPAIR PARTS

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