SDR UPS02439050

Service difficulty report · Fitting · Boeing 747212B

Difficulty date: August 4, 2002
Submitted: August 14, 2002
Operation: Air carrier
Aircraft: N526UP
Make and model: Boeing 747212B
Aircraft serial: 21937
Aircraft time: 79,834 hours, 15,049 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Fitting
Condition: Cracked
Location: Bs1480
Stage of operation: IN
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:C LH BS 1480 B/H #11 HOLE 2EA CRACK FOUND AT OUTER CHORD SPLICE FTG RUNNING FWD AT 8 O/C POSN & 7 O/C POSN (LOOKING I/B),CRACK AT 8 O/C POSN 3/16" LONG, CRACK AT 7 O/C POSN 0.040" LONG (CRACK AT O/B FACE) (STR L33 TO L34) LH BS 1480 B/H OUTER CHORD SPLICE FTG BOLT HOLE #11 REAMED TO 0.660" AS PER SB 747-53A2390 R1 AND BUSHING REINSTALLED CRACK FREE CONFIRMED AS PER NDT NTM PT 6 51-00-00 FIG 4.

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