Service difficulty report · Floorbeam · Boeing 747243B

Difficulty date
January 18, 2010
Submitted
February 19, 2010
Operation
Air carrier
Aircraft
N517MC
Make and model
Boeing 747243B
Aircraft serial
23300
Aircraft time
87,026 hours, 14,764 cycles
Part
Floorbeam
Condition
Cracked
Location
Bs 460
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

CRACK ON UPPER DECK FLOORBEAM WEB BS 460 RBL 33-55. ACCOMPLISHED PER REA: MF00656R0008 AND RFTA: 00656-0008. CRACKED AREA TRIMMED OUT REINFORCE WITH EXTRUDED TEE AND SPLICE AND FILLERS (2EA) P/N N517MC-NRC178-1/2/3/4 PER SRM 53-10-07 FIG 11 USING FASTENER PER SRM 51-30-02. INITIAL DVI AT 6000 FC, REPEAT THEREAFTER AT 3000 FC PER EO NR 4753B238.