SDR IPXA2026052627817

Service difficulty report · Floorbeam · Boeing 75724APF

Difficulty date: May 11, 2026
Submitted: May 27, 2026
Operation: Air carrier
Aircraft: N412UP
Make and model: Boeing 75724APF
Aircraft serial: 23852
Aircraft time: 38,243 hours, 25,950 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 146N5701
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 OF BULK CARGO COMPARTMENT FLOOR BEAM ASSY UPPER FLANGE HAS 4 EA NUT PLATE CORRODED APPROX AT BS 1681.8, BTW BL 0 AND RBL 50, ID STICKER NUM. (085-015) ATA 53-10. INSTALLED 2EA NEW NUT PLATE STRAPS ASSY AT AFT OF BULK CARGO COMPARTMENT FLOOR BEAM ASSY UPPER FLANGE, APPROX AT BS 1681.8 RBL 11 AND RBL 30. IAW B757-200 SRM 51-40-02-0G-0.

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