Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
July 18, 2022
Submitted
August 15, 2022
Operation
Air carrier
Aircraft
N8639B
Make and model
Boeing 7378H4
Aircraft serial
60086
Aircraft time
27,400 hours, 12,638 cycles
Part
Floorbeam
Condition
Corroded
Location
Fuselage
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

CABIN; STA.947.5 LBL 25; HARD POINT FITTING ON FLOORBEAM HAS AREA OF CORROSION. / [01] REMOVED CORROSION ON FLOORBEAM AT STA. 947.5 LBL 25; REMOVED .055? OF .185? FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1.;[02] VERIFIED CORROSION REMOVAL IS OUT OF LIMITS.;[03] FABRICATED SHIM IAW SRM 53-70-51-2R-8; ALT. 3. TREATED AND PRIMED SHIM AND BARE AREAS OF 947.5 FLOORBEAM IAW SRM 51-20-01 AND SOPM 20-41-02.;[04] VERIFIED CA #3. RICHARD BLACKBURN (TECHNICIAN); 22-JUL-2022 05:21 UTC<BR>FABRICATED SHIM IAW SRM 53-70-51-2R-8; ALT. 3. TREATED AND PRIMED SHIM AND BARE AREAS OF 947.5 FLOORBEAM IAW SRM 51-20-01 AND SOPM 20-41-02. C/W;[05] OK TO INSTALL REPAIR PARTS;[06] INSTALLED REPAIR PARTS AND HARDPOINT FITTING IAW EA 22-153-02143 AND SRM 53-70-51-2R-8; ALTERNATE 3.;[07] INSPECTED WORK ABOVE;[08] OK TO CIC THE OPENED AREA.;[09] APPLIED CIC TO REPAIR AREA AND DISTURBED AREAS IAW AMM 51-00-59.;[10] INSPECTED THE WORK PERFORMED ON STEP 4; NO DEFECTS NOTED.;[11] INSPECTED THE WORK PERFORMED ON STEP 3; NO DEFECTS NOTED.;[12] VERIFIED ALL STEPS COMPLETED AND SIGNED OFF.

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