Service difficulty report · Floorbeam · Boeing 757236

Difficulty date
August 24, 2013
Submitted
October 30, 2013
Operation
Air carrier
Aircraft
N979FD
Make and model
Boeing 757236
Aircraft serial
25592
Aircraft time
56,918 hours, 19,763 cycles
Part
Floorbeam
Part number
146N51094
Condition
Corroded
Location
Bs 1640
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

BS 1640, RBL 45.5 - 51.5, FLOORBEAM UPPER FLANGE LOWER SURFACE FOUND CORROSION AROUND FASTENER HOLES. REMOVED AND REPLACED IAW DWG 146N5109 SHT 1, REV A AND INSTALLED IAW DWG 146N5089 SHT 1, REV B. REPAIR IS MAJOR.