SDR CALA2025090908652

Service difficulty report · Floor Support · Boeing 75733N

Difficulty date: September 8, 2025
Submitted: September 9, 2025
Operation: Air carrier
Aircraft: N57868
Make and model: Boeing 75733N
Aircraft serial: 32590
Aircraft time: 68,402 hours, 21,046 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 1517222614
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 AT AFT CARGO PIT FLOOR SUPPORT BS 1380 RBL 16 UNDER THE NUTPLATES. REMOVED CORROSION ON FLOOR SUPPORT IAW SRM 51-10-02; ORIGINAL THICKNESS 0.063", MATERIAL LOSS 0.050" MATERIAL REMAINING 0.013", FOUND OUT LIMITS IAW SRM 53-00-53-1A-1, INSTALLED NEW FLOOR SUPPORT IAW SRM 51-40-02.

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