Service difficulty report · Floorbeam · Boeing 757351

Difficulty date
April 4, 2015
Submitted
April 7, 2015
Operation
Air carrier
Aircraft
N596NW
Make and model
Boeing 757351
Aircraft serial
32996
Aircraft time
41,415 hours, 13,807 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 1640
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

MAIN CABIN FLOORBEAM UPPER CAP BS 1640, FROM LBL 60 TO RBL 60 HAS AREAS OF CORROSION, EXPOSED BARE METAL AND FLOORBOARD. INSERTS STILL ATTACHED TO FLOORBEAM. ACCOMPLISHED PERMANENT REPAIR ON MAIN CABIN FLOORBEAM UPPER CAP AT STA 1640 FROM RBL 45 TO RBL 60 IAW ERA 532870-14, REV ORIGINAL, REMOVED CORROSION IAW SRM 53-00-51 MATERIAL LOST BETWEEN RBL 45 TO RBL 60, .046 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-51, FIG 101. AREA BETWEEN LBL 60 TO RBL 45 MATERIAL LOSS RANGE FROM .001 TO .006 FOUND TO BE WITHIN LIMITS IAW SRM 53-00-51, FIG 101. REMOVED ATTACHED FLOORBOARD INSERTS IAW SRM 51-40-02. TREATED AND PRIMED ALL AREAS IAW SRM 51-20-01 AND P.S. 900-2 NR 05.