SDR 200200283

Service difficulty report · Floorbeam · Boeing 747SR46

Difficulty date
September 19, 2002
Submitted
September 19, 2002
Operation
Air carrier
Filed by
ERKR675D
Marana Aerospace Solutions Inc
Aircraft
N477EV
Make and model
Boeing 747SR46
Aircraft serial
20784
Aircraft time
64,833 hours, 33,228 cycles
Part
Floorbeam
Part number
65B1033947
Condition
Cracked
Location
Fuselage
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 320 MAIN DECK FLOORBEAM - CRACK IN WEB AT LBL 39 AND CRACK IN LOWER CHORD AT LBL 37.5. THE CRACKED WEB IS BEING REPAIRED BY LOCALLY TRIMMING AWAY THE CRACK, HFEC INSPECTING THE EXISTING FASTENER HOLES TO ENSURE A CRACK FREE CONDITION, AND INSTALLING A REPAIR DOUBLER. THE CRACKED FLOORBEAM LOWER CHORD IS BEING REPAIRED BY CUTTING THE FLOORBEAM LOWER CHORD LBL 17, DISCARDING THE SECTION OF FLOORBEAM FROM THE LT SIDE OF BODY, AND SPLICING IN A NEW SECTION OF FLOORBEAM LOWER CHORD EXTRUDED ANGLES PER ECRA 477-53-085-2 REV A.

More about the Boeing 747-SR-46