Service difficulty report · Floorbeam · Boeing 747283B

Difficulty date
September 19, 2006
Submitted
October 13, 2006
Operation
Air carrier
Aircraft
N523UP
Make and model
Boeing 747283B
Aircraft serial
22381
Aircraft time
77,462 hours, 16,019 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 1403
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, RT B/G W/W UPPER PRESSURE FLOOR PANEL ATTACH ANGLE SOME AREA FOUND CORROSION AS MARK AT STA 1403, RBL 34 TO RBL 104. CORROSION BLEND OUT 0.030" BY 1/2" BY 4" EXCEED SRM 53-10-01 FIG 1 LIMITS, RBL 34-63 AND RBL 67-104 CORROSION. REMOVED AND REPROTECTED AS PER SRM 51-10-01 AND 51-10-02 DEPTH 0.006" AND 1/2" AND 20" WITHIN SRM 53-10-01 FIG 1, LIMITION AT BS 1403 RBL 63" - RBL 67" ANGLE REPAIRED AS PER SRM 51-40-04 FIG 1.