Service difficulty report · Rib · Gulstm 690

Difficulty date
February 11, 2011
Submitted
March 15, 2011
Operation
Air carrier
Make and model
Gulstm 690
Aircraft time
7,888 hours
Engine
Garrtt TPE3315251K
Propeller
Hartzl HCB3TN5
Part
Rib
Part number
410008105
Condition
Cracked
Location
Vertical Stab
Stage of operation
IN
How discovered
9
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

WHILE DOING PHASE INSP, THE SQUEEZE TEST FOUND CRACKED FWD TABS ON SEVERAL VERTICAL STABILIZER NOSE RIBS. THE SAME DEFECTS WERE FOUND ON 2 OTHER ACFT OUT OF 9 ACFT THAT WERE CHECKED. SOME OF THE TABS APPEAR TO HAVE BEEN BROKEN FOR AN EXTENDED TIME. REPAIRS ARE UNDERWAY.