SDR CALA2025122312357

Service difficulty report · Floor Support · Boeing 757224

Difficulty date: December 20, 2025
Submitted: December 23, 2025
Operation: Air carrier
Aircraft: N29129
Make and model: Boeing 757224
Aircraft serial: 28969
Aircraft time: 98,758 hours, 21,903 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 5360510116
Condition: Cracked
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

MAIN CABIN FLOOR STRUCTURE BS 1320-1340, BL 0 WEB HAS ONE CRACK. FABRICATED IAW DWG 146N5180. REMOVED WEB, LOCATED & DRILLED WEB IAW SRM 51-40-05-OG-0, TREATED, PRIMED, TOP COAT AT WEB IAW SRM 51-20-01-OG-0, AMM 51-21-14-270- 801, AND AMM 51-21-15-370-801, INSTALLED WEB IAW SRM 51-40-02-OG0, APPLIED CIC IAW AMM 51-24-03-377-008.