Service difficulty report · Floorbeam · Boeing 747121

Difficulty date
August 17, 2006
Submitted
September 11, 2006
Operation
Air carrier
Aircraft
N682UP
Make and model
Boeing 747121
Aircraft serial
20349
Aircraft time
104,700 hours, 26,436 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 980
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 980 LBL 60 FLOORBEAM UPPER SURFACE CORROSION. CORROSION BLEND OUT 0.068" BY 2" BY 2" EXCEED SRM 53-10-01 FIG 1 LIMITS. BS 980 LBL 20" TO LBL 70" FLOORBEAM UPPER CHORD REPLACED AND INSTALLED AS PER SRM 51-10-01 PG 9 AND 51-30-02.