Service difficulty report · Floorbeam · Boeing 747422

Difficulty date
May 19, 2007
Submitted
May 24, 2007
Operation
Air carrier
Aircraft
N177UA
Make and model
Boeing 747422
Aircraft serial
24384
Aircraft time
70,449 hours, 8,842 cycles
Engine
Pwa PW4056
Part
Floorbeam
Condition
Damaged
Location
Bs 480
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

FWD CARGO PIT, FLOOR STRUCTURE FRAMES AT STA 480 LBL 45.5 AND STA 480 LBL 24.75 ARE BENT AND HAVE PULLED FASTENERS AFT OF STA 480 WEB. [SUP 06-01-07] MAJOR REPAIR ACCOMPLISHED: REMOVED CLIPS AT BOTH WEBS. MFG'D NEW CLIPS AND WEBS AND BEGAN DRILLING AT BOTH LOCATIONS. INSTALLED MFG'D CLIPS AND WEBS WHILE REPAIRING RAILS.