SDR FDEA202101250186

Service difficulty report · Floorbeam · Boeing 75721B

Difficulty date: January 25, 2021
Submitted: January 26, 2021
Operation: Air carrier
Aircraft: N933FD
Make and model: Boeing 75721B
Aircraft serial: 24330
Aircraft time: 62,643 hours, 36,857 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 141N516140
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

FWD WET AREA STA 333.45 BETWEEN RBL 2.5-RBL 4.5 FLOOR SUPPORT CORRODED. EVALUATED FLOOR SUPPORT AT FWD WET STA 333.45 BETWEEN RBL 2.5-4.5, FOUND TO BE WITH OUT LIMITS, IAW B 757 SRM 53-00-51-1A FIG 4 DETAIL III. REMOVED AND REPLACED FLOOR SUPPORT P/N 141N5161U40 PO FS2100324, IAW B 757 SRM 51-40-02-OG.

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