Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
May 18, 2026
Submitted
June 23, 2026
Operation
Air carrier
Aircraft
N8646B
Make and model
Boeing 7378H4
Aircraft serial
36935
Aircraft time
39,772 hours, 19,344 cycles
Part
Floorbeam
Condition
Corroded
Location
Zone 200
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

CORROSION ON BS 986.5 FLOORBEAM UPPER FLANGE AT NUTPLATE HOLE LBL 43, WL 208. REPAIRED THE FLOORBEAM IAW SRM 53-70-51-2R-6, FIG 205.

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