Service difficulty report · Tension Tie · Boeing 747451

Difficulty date
December 22, 2012
Submitted
January 16, 2013
Operation
Air carrier
Aircraft
N667US
Make and model
Boeing 747451
Aircraft serial
24222
Aircraft time
97,543 hours, 11,950 cycles
Part
Tension Tie
Condition
Cracked
Location
Bs 1220
Stage of operation
IN
How discovered
E
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 OPEN HOLE HFEC INSPECTION ON RT SIDE BS 1220 TENSION TIE, FOUND ONE CRACK AT AFT CHANNEL, UPPER ROW 6TH FASTENER HOLE FROM OTBD AFTER FRAME. REAMED OVERSIZE FROM 0.199" TO 0.216" DIA IAW SB 74 7-53A2507, REV 1.