SDR IPXA2025031311380

Service difficulty report · Floorbeam · Boeing 75724APF

Difficulty date: March 12, 2025
Submitted: March 26, 2025
Operation: Air carrier
Aircraft: N473UP
Make and model: Boeing 75724APF
Aircraft serial: 28846
Aircraft time: 25,469 hours, 16,974 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 149N76555
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

FS 1220 LBL 65 TO LBL 70 UPPER PART OF T-CHORD FLANGE IS EXFOLIATED.REMOVED T-CHORD ON FS 1220 LBL 65 TO LBL 70 IAW B757-200, SRM 51-40-02, EVALUATED AND FOUND OUT OF LIMITS IAW B757-200, SRM 53-00-71-1A-1 DETAIL IX.INSTALLED NEW T-CHORD AT STA1220 LBL65-70 AND APPLIED CIC TO NEW T-CHORD.

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