SDR 2025F00176

Service difficulty report · Drag Brace · Gulstm 690B

Difficulty date
August 4, 2025
Submitted
August 7, 2025
Operation
General aviation
Aircraft
N721TB
Make and model
Gulstm 690B
Aircraft serial
11352
Aircraft time
9,636 hours, 10,027 cycles
Engine
Garrtt TPE3315
Part
Drag Brace
Part number
EA1570501
Condition
Broken
Location
Zone 700
Part time
9,636 hours, 10,027 cycles
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

LEFT MAIN LANDING GEAR DRAG BRACE ASSEMBLY P/N EA1570-501 WAS FOUND CRACKED IN THE UPPER PORTION OF THE DRAG BRACE. CRACK WAS FOUND DURING A PRE FLIGHT INSPECTION. THE CRACK IS IN AN AERA THAT TWIN COMMANDER SL 376 ADDRESSES FOR NDT INSPECTION. CRACKED DRAG BRACE HAD 41.9 HOURS SINCE LAST NDT INSPECTION, INSPECTION WAS COMPLETED IN ACCORDANCE WITH TWIN COMMANDER SL376.