SDR CALA2024121603076

Service difficulty report · Floor Support · Boeing 737924ER

Difficulty date: December 10, 2024
Submitted: December 16, 2024
Operation: Air carrier
Aircraft: N75426
Make and model: Boeing 737924ER
Aircraft serial: 31622
Aircraft time: 51,480 hours, 18,154 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 146A750139
Condition: Corroded
Location: Zone 100
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 CARGO FLOOR STRUCTURE SUPPORT HAS CORROSION AT STA 807. REMOVED CORROSION, FLOOR SUPPORT, ORIGINAL THICKNESS .07, REV-. REMOVED .012, MAT''L REMAINING .059 IS OUT OF LIMITS IAW B737 SRM 53-00-53. LOCATED DRILLED AND INSTALLED FLOOR SUPPORT IAW BAC DWG 146A7501.