Service difficulty report · Floorbeam · Boeing 737824

Difficulty date
September 12, 2025
Submitted
September 24, 2025
Operation
Air carrier
Aircraft
N27239
Make and model
Boeing 737824
Aircraft serial
28951
Aircraft time
79,293 hours, 29,659 cycles
Part
Floorbeam
Part number
147A55068
Condition
Corroded
Location
Zone 200
Stage of operation
IN
How discovered
V
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 CABIN AFT WET AREA FLOORBEAM STA 986.5 BETWEEN BL-0 AND RBL 54. REMOVED CORRODED EXISTING TEE CHORD REPAIR AT STA 986.5 FROM RBL 54 TO LBL 50 IAW SRM 51-40-02-0G-0, CUT AND REMOVED THE REMAINING DAMAGE FLANGE FROM LBL 50 TO LBL 54 IAW SRM 53-70-51-2R-4. INSTALLED NEW T-CHORD REPAIR AND ASSOCIATED REPAIR PARTS FROM LBL 55 TO RBL 55 AS PER SRM 53-70-51-2R-4 AND EC/RA 5370-01192.