SDR IPXA2026071436647

Service difficulty report · Floor Support · Boeing 75724APF

Difficulty date: June 24, 2026
Submitted: July 16, 2026
Operation: Air carrier
Aircraft: N453UP
Make and model: Boeing 75724APF
Aircraft serial: 25474
Aircraft time: 40,247 hours, 23,271 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 146N5444
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 AREA FLOOR PANEL STRUCTURE BTWN STA 1500-1520 LBL7 HAS EXFOLIATION CORROSION. REMOVED CORROSION ON STRINGER STA 1500-1520 LBL7, ORIGINAL MATERIAL 0.063", MATERIAL LOST 100%, FOUND OUT OF LIMITS I.A.W. 757-200 SRM 53-00-53-1A-1 DETAIL V. INSTALLED, CHANNEL AND ANGLE ON STRINGER. IAW B757-200PF SRM 51-40-02-0G-0 AND SRM 53-00-53-2R-1.

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