SDR UPS06447660

Service difficulty report · Floorbeam · Boeing 747123F

Difficulty date: July 13, 2006
Submitted: August 14, 2006
Operation: Air carrier
Aircraft: N676UP
Make and model: Boeing 747123F
Aircraft serial: 20101
Aircraft time: 83,907 hours, 23,132 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 520
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

BS 520 FLOORBEAM UPPER CHORD FOUND CORRODED. CORROSION BLEND OUT 0.030" BY 2" BY 3" EXCEED SRM 53-10-01 FIG 1 LIMIT AND U/D BS 520 FLOORBEAM UPPER CHORD REPAIRED AS PER HX RS NR R53-25-35537 REF NRC NR IB70247 FOR WORKING DETAIL AND REF UPS EO NR B747-5310-24843-A.