Service difficulty report · Floor Support · Boeing 747121

Difficulty date
March 12, 2006
Submitted
April 3, 2006
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Aircraft time
106,939 hours, 27,146 cycles
Part
Floor Support
Condition
Corroded
Location
Bs 1540-1580
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 1540-1580 LBL116 LONGITUDINAL FLOOR SUPPORT CORRODED. CORROSION BLEND OUT 0.055" BY 0.25" BY 1" EXCEED SRM LIMIT. FLOOR SUPPORT REPAIRED AS PER SRM 51-40-04 FIG 2 REFER NRC6412 FOR WORKING DETAIL.