SDR IPXA1B65410

Service difficulty report · Floorbeam · Boeing 7474R7F

Difficulty date: February 12, 2011
Submitted: March 16, 2011
Operation: Air carrier
Aircraft: N583UP
Make and model: Boeing 7474R7F
Aircraft serial: 25867
Aircraft time: 90,628 hours, 15,346 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: BAC1505101047
Condition: Corroded
Location: Bs 980
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

INSPECTION TYPE:D, M/D FLOORBEAM UPPER CHORD FOUND CORROSION AT STA 980 RBL 75-80. M/D FLOORBEAM AT BS980 BTN RBL55 TO RT MOST OTBD AREA UPR CHORD REPAIRED IAW RS R53-25-36948, REV A & EO B747-5310-41600-A. ORG THICKNESS IS 0.148", BLEND DEPTH REMAINS 0.050" CUTOFF LENGTH IS 56" TOTAL REPAIR LENGTH IS 65".

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