Service difficulty report · Tension Tie · Boeing 747428

Difficulty date
August 6, 2026
Submitted
September 16, 2026
Operation
Air carrier
Aircraft
N756CA
Make and model
Boeing 747428
Aircraft serial
26547
Aircraft time
101,065 hours, 16,439 cycles
Part
Tension Tie
Condition
Cracked
Location
Zone 200
Part time
101,065 hours, 16,439 cycles
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

2 CRACK INDICATION FOUND (FWD CHANNEL 1EA HOLE AND FRAME AREA 1EA HOLE) DURING OPEN-HOLE HFEC INSPECTION OF THE TENSION TIE AT STA 1120, LEFT HAND SIDE. PER FCD 744-53-0025 R3. REPAIR: REAMED CRACK SIGNAL INDICATION HOLE ON BS 1120 LT FRAME WEB ONLY. UP TO 0.385" DIA. PER BOEING SR MUA-MUA-26-0158-08B