Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
January 17, 2025
Submitted
February 27, 2025
Operation
Air carrier
Aircraft
N8608N
Make and model
Boeing 7378H4
Aircraft serial
36638
Aircraft time
40,188 hours, 19,212 cycles
Part
Floorbeam
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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 WET AREA; BS 987 LBL 47 +/- FLOORBEAM T CAP CORRODED AT DOME NUT FASTENER. AS MARKED. <[01] REMOVED CORROSION FROM AFT WET AREA; BS 987 LBL 47 +/- FLOOR BEAM T CAP AT DOME NUT FASTENER IAW B 737-800 SRM 51-10-02; ORIGINAL MATERIAL THICK. 0.150 IAW BAC 1518-1211 MAXIMUM MATERIAL REMOVED .021 MATERIAL REMAINING 0.129 FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1. ; CUT OUT DAMAGED IAW B737-NG SRM 53-70-51-2R-6.; ACCOMP. HFEC AREA & TRIM OUT IAW B737 NDT MAN. 51-00-00 PROC. 23; PT6. NO CRACK INDICATIONS FOUND. ; PERFORMED DVI AT THE REPAIR AREA IAW B737-NG SRM 53-70-51-2R-6; NO DEFECTS NOTED.; SHOT PEENED AREA IAW B737-NG SRM 53-70-51-2R-6 AND SRM 51-20-06-0G-0; FABRICATED; LOCATED; DRILLED AND INSTALLED REPAIR PARTS -1 STRAP; -2 ANGLE; AND -3 FILLER REF B737-NG SRM 53-70-51-2R-6.;;[02PERFORMED DVI AT THE REPAIR AREA IAW B737-NG SRM 53-70-51-2R-6; NO DEFECTS NOTED.;; SHOT PEENED AREA IAW B737-NG SRM 53-70-51-2R-6 AND SRM 51-20-06-0G-0; FABRICATED; LOCATED; DRILLED AND INSTALLED REPAIR PARTS -1 STRAP; -2 ANGLE; AND -3 FILLER REF B737-NG SRM 53-70-51-2R-6.

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