Service difficulty report · Floorbeam · Boeing 747123

Difficulty date
July 11, 2006
Submitted
August 7, 2006
Operation
Air carrier
Aircraft
N676UP
Make and model
Boeing 747123
Aircraft serial
20101
Aircraft time
83,907 hours, 23,132 cycles
Part
Floorbeam
Condition
Cracked
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

INSPECTION TYPE:C U/D LEFT BS 520 UPPER DECK FLOORBEAM FWD FLANGE 1EA FASTENER HOLE FOUND CRACK AT LBL 45. CRACK LENGTH 0.030 INCH. U/D BS 520 FLOORBEAM UPPER CHORD FWD FLANGE AT LBL45 AREA HOLE OVERSIZED TO 0.326 INCH AND C/D WAS MEASURED MORE THAN 1.3 PER UPS EO B747-5310-23043 APP D. NO MORE REPAIR IS NESESSARY.