SDR CALA2025071706646

Service difficulty report · Floor Support · Boeing 737824

Difficulty date: May 28, 2025
Submitted: July 17, 2025
Operation: Air carrier
Aircraft: N16234
Make and model: Boeing 737824
Aircraft serial: 28946
Aircraft time: 78,580 hours, 29,289 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 147A8540
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

AFT WET AREA, DURING REPAIR PROCESS OF FLOOR BEAM 986.5, FOUND CORROSION ON INNER CHORD STA 887 TO 1016 LBL 45 REQUIRE REPLACE (REF AAR NR 1000039930) ESFR DETAILS UPDATED. REMOVED AND REPLACED NEW INNER CHORD LBL 45, IAW B737-800, DWG 1 47A8540B,DWG 147A8501, SRM 51-40-05-0G-0, TABLE B, FIG.3, SRM 51 -40-08-0G-0, 51-40-02-0G-0, STEP 4 AND 9.