SDR CALA2025092509261

Service difficulty report · Floorbeam · Boeing 737924ER

Difficulty date: September 24, 2025
Submitted: September 25, 2025
Operation: Air carrier
Aircraft: N75435
Make and model: Boeing 737924ER
Aircraft serial: 33529
Aircraft time: 51,181 hours, 18,376 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 147A5506
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

MAIN CABIN FLOORBEAM AT BS 987 LBL45 CORRODED AT GIRT BAR FITTING HOLE (DOME NUT) LOCATION. REMOVED CORROSION, FOUND TO BE 100%, OUT OF LIMITS IAW SRM 53-70-51-1A-1 DETAIL C. REPAIRED AREA IAW SRM 53-70-51-2R, REPAIR 6, & SRM 51-20-01. ACCOMPLISHED DVI IAW SRM 51-10-04. ACCOMPLISHED HFEC IAW NDT PART 651-00-00 PROCEDURE 4, NO CRACK NOTED. SHOT PEEN AREA IAW SRM 20-10 -03.