Service difficulty report · Floorbeam · Boeing 757251

Difficulty date
December 17, 2010
Submitted
December 20, 2010
Operation
Air carrier
Aircraft
N519US
Make and model
Boeing 757251
Aircraft serial
23207
Aircraft time
74,471 hours, 30,609 cycles
Engine
Pwa PW2037
Part
Floorbeam
Condition
Corroded
Location
Bs 365
Stage of operation
IN
How discovered
V
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

DURING M-CHECK FOUND FWD CABIN FLOORBEAM, STN 365 PREVIOUS REPAIR FROM LBL 15 TO RBL 64 CORRODED AT SEVERAL LOCATIONS AS MARKED. BLENDED AREA ON FLOORBEAM FOUND TO BE OUT OF LIMITS IAW SRM 53-00-51, FIG 101. FABRICATED NEW UPPER CHORD TREATED AND PRIMED NEW UPPER CHORD IAW SRM 51-20-01. APPLIED TOPCOAT TO UPPER CHORD IAW SRM 51-21-00. INSTALLED FRAME SPLICE IAW SRM 51-40-02. INSTALLED SUPPORT ANGLE AT RBL 60, STA 365 IAW SRM 51-40-02. INSTALLED SUPPORT ANGLE RBL 24.75, STA 365 IAW SRM 51-40-02. INSTALLED (2EA) SUPPORT BRACKETS AT RBL 45.5 STA 365 IAW SRM 51-40-02. INSTALLED SUPPORT CHANNEL STA 345-365, RBL 24. INSTALLED UPPER FLOORBEAM CAP IAW SRM 53-00-51.