Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
October 5, 2017
Submitted
February 3, 2022
Operation
Air carrier
Aircraft
N239WN
Make and model
Boeing 7377H4
Aircraft serial
34714
Aircraft time
40,410 hours, 23,765 cycles
Part
Floorbeam
Condition
Corroded
Location
Aft Cargo Bay
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 CARGO PIT FLOOR STRICTURE AT STA. 927 + 10 STR. 25R FASTENER HOLE HAS CORROSION AS MARKED. / AFT CARGO FLOOR STRUCTURE AT 927+10 STR 25R FASTENER HOLE HAS CORROSION. BLENDED AND REMOVED CORROSION I/A/W SRM 51-10-02 AND CHECKED WITH 10X MAG. MATERIAL THICKNESS IS .075 MAT REMOVED IS .045 MATERIAL REMAINING IS .030 OUT OF LIMITS I/A/W SRM 53-00-53-1A-2. REMOVED 'OUT OF LIMITS' OLD FLOOR STRUCTURE I/A/W SRM 51-40-05-0G-0. LOCATED AND DRILLED NEW FLOOR STRUCTURE 'A' TAG VE0046 I/A/W SRM 51-40-05-0G-0 ALSO BOEING DWG 147A7500 REV-0 INSTALLED NEW FLOOR STRUCTURE AT RBL 8' STA 947+10 I/A/W SRM 51-40-02-0G-0 ALSO BOEING DWG 147A7500 REV ; CIC AREA I/A/W SRM 53-00-53-1A-2 STEP 2 E(3)

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