SDR IPXA2024080218877

Service difficulty report · Floor Support · Boeing 75724APF

Difficulty date: July 20, 2024
Submitted: August 12, 2024
Operation: Air carrier
Aircraft: N461UP
Make and model: Boeing 75724APF
Aircraft serial: 28265
Aircraft time: 41,380 hours, 20,807 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 144N50057
Condition: Corroded
Location: Main Cabin
Stage of operation: IN
How discovered: 9
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 CORROSION UNDER FLOOR PANEL 241XFF AFT AREA.REMOVED 01 NUT DOME IAW SRM 51-40-02-0G, CLEAN AREA AND REMOVED CORROSION IAW SRM 51-10-02, AFTER EVALUATION T-CHORD FOUND TO BE OUT OF LIMITS IAW SRM53-00-51-1A-1 DETAIL III, MEASUREMENTS: ORIGINAL THICKNESS 0.060" REMAINING THICKNESS 0.049 MATERIAL LOSS 0.009".LOCATED AND DRILLED I.A.W. B757 SRM 51.40.02.0G AND 51.40.05.0G.V

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