Service difficulty report · Floorbeam · Boeing 7377BD

Difficulty date
November 29, 2022
Submitted
January 10, 2023
Operation
Air carrier
Aircraft
N7742B
Make and model
Boeing 7377BD
Aircraft serial
33928
Aircraft time
51,537 hours, 27,573 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 986 Lbl24-45
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

CORROSION AT AFT CABIN WET AREA FLOOR BEAM FWD FLANGE FASTENER HOLES STA 986.5 LBL24 TO LBL 45. REMOVED CORROSION AT AFT CABIN WET AREA FLOOR BEAM FWD FLANGE FASTENER HOLE STA 986.5 AND LBL45 REF SRM 51-40-02-0G-0.<OUT OF LIMITS REF. SRM 53-70-51-1A-1; FIGURE 103. PERFORMED HFEC INSP ON REWORKED AREA STA986.5 LBL45 IAW B737 NDT P6 51-00-00 PROC.23. NO CRACKS NOTED. TRIM OUT DAMAGED SECTION (1.250' & 0.850') AT AFT CABIN WET AREA FLOORBEAM FWD FLANGE IAW SRM 53-70-51-2R-6; FIGURE 205.

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