SDR IPXA2025031311399

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: 149N763037
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 1180- FS1240 LBL 62 UPPER T-CHORD FALNGE IS EXFOLIATED AT FS1218-FS1224.REMOVED CORROSION FROM UPPER T-CHORD SURFACE, FS 1218-FS 1224 LBL 62, IAW 757-200PF SRM 51-10-02. EVALUATED REWORK.REMOVED CORRODED T-CHORD FROM FS1180-FS1240 LBL 62 IAW 757-200PF SRM 51-40-02-0G.TREATED, PRIMED AND APPLIED TOPCOAT TO NEW T-CHORD.INSTALLED NEW T-CHORD AT STA 1180-1240 LBL 62. REVIEWED.

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