Service difficulty report · Floorbeam · Boeing 737752

Difficulty date
April 19, 2023
Submitted
May 22, 2023
Operation
Air carrier
Aircraft
N7835A
Make and model
Boeing 737752
Aircraft serial
34294
Aircraft time
57,926 hours, 30,275 cycles
Part
Floorbeam
Condition
Corroded
Location
Zn 100 Fus Lower
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* AFT CABIN FLOOR BEAM STA 986.5 BETWEEN LBL 35 AND LBL 44 WL 208.1 HAS CORROSION AROUND FASTENER HOLES AS MARKED. 124-047<[01] CORRECTION ON TABLE STEP 17 REMAINING THICKNESS IS 0.121;[02] VERIFIED CORRECTION;[03] REPAIR AFT CABIN FLOOR BEAM STA 986.5 BETWEEN LBL 35 AND LBL 44 WL 208.1 WAS ACCOMPLISHED ON THE ITEM TTG8Q00KUXWV;[04] CORRECTION. REPAIR AFT CABIN FLOOR BEAM STA 986.5 BETWEEN LBL 35 AND LBL 44 WL 208.1 AS PER EA 23-153-01453; WAS ACCOMPLISHED ON THE ITEM TTG8Q00KUXWV;[05] CORRECTION. REPAIR ACCOMPLISHED EA 23-153-01453. REF FAULT TTG8Q00KJ1J7;[06] VERIFIED STEPS 4 AND 5.