Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
January 14, 2020
Submitted
August 20, 2021
Operation
Air carrier
Aircraft
N8310C
Make and model
Boeing 7378H4
Aircraft serial
38807
Aircraft time
27,014 hours, 11,809 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 986
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 WET AREA; TOP AND BOTTOM OF FLOOR STRUCTURE AT R/H STA 986; RBL 33.5; WL 208; HAS A FASTENER HOLE CORRODED. / BLENDED CORROSION AT TOP AND BOTTOM SURFACE OF FLOOR BEAM TCAP AT STA 986 RBL 33.5 WL 208; ORIGINAL THICKNESS .126'; REMAINING .100' LOSS OF .025' FOUND OUT OF LIMITS IAW SRM 53-70-51-1A-1 TRIMMED OUT DAMAGED AREA AND PERFORMED FLOOR BEAM UPPER CHORD T CAP REPAIR IAW SRM 53-70-5-1-2R-4. APPLIED CIC TO NEW T CAP AND DISTURBED AREAS IAW AMM 51-71-91-620-802

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