Service difficulty report · Angle · Boeing 7377H4

Difficulty date
August 4, 2022
Submitted
August 29, 2022
Operation
Air carrier
Aircraft
N261WN
Make and model
Boeing 7377H4
Aircraft serial
32517
Aircraft time
53,121 hours, 31,580 cycles
Part
Angle
Condition
Corroded
Location
Fwd Cargo
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 SPOTS AROUND FASTENERS HEADS AT FWD CARGO COMPARTMENT AFT BULKHEAD LOWER BILGE FLOOR SUPPORT ANGLE STA 500D FROM S-25L TO S-25R MKD DOT / [01] BLENDED OUT AREA IN ACCORDANCE B-737-700 SRM 51-10-02-0G-0.;[02] AFTER REMOVING CORROSION THE DEEPEST POINT WAS FOUND IN LBL 3 WITH A REMAINING THICKNESS OF 0.050 IN; ORIGINAL THICKNESS WAS 0.071 IN; MATERIAL LOST 0.021. FOUND OUT OF LIMITS IN ACCORDANCE TO B-737-700 SRM 53-00-53-1A-2.;[03] VERIFIED BLEND & EVALUATION;[04] LOCATED AND DRILLED NEW PART AS PER B-737-700 SRM 51-40-05-0G-0; DRAWING #: 143A9481.;[05] NEW PART INSTALLATION WOULD BE ACCOMPLISHED IN WORK CARD: TTG8Q004DCHM.;[06] VERIFIED STEPS 4; 5

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