Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
July 3, 2024
Submitted
August 13, 2024
Operation
Air carrier
Aircraft
N257WN
Make and model
Boeing 7377H4
Aircraft serial
32515
Aircraft time
59,419 hours, 35,640 cycles
Part
Floorbeam
Condition
Corroded
Location
Zone200
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 ON TOP FLANGE OF BS 986.5 FLOOR BEAM RBL 45-RBL 28 AND LBL 44 WL 208<[01] COMPLETED STEP 1; UPDATED TABLE;[02] EDITED STATEMENT;[03] EVALUATED CORROSION ON TOP FLANGE OF BS 986.5 FLOOR BEAM RBL 45-RBL 28 AND LBL 44 WL 208. FOUND TO BE OUT OF LIMITS DUE TO ENTIRE UPPER CHORD OF FLOORBEAM TO HAVE BEEN PREVIOUSLY REPAIRED AND NO SRM ALLOWABLE LIMITS.;[04] REPAIRED FLOOR BEAM AT 986.5 RBL 45-RBL 28 AND LBL 44 WL 208 PER EA M-21-153-00612 (CUSTOMER CARD TTG8Q00UDDLZ).;[05] VERIFIED CORRECTIVE ACTION ENTRY 4.

More about the Boeing 737-7H4