Service difficulty report · Ballscrew · Boeing 767233

Difficulty date
February 14, 2005
Submitted
March 3, 2005
Operation
General aviation
Make and model
Boeing 767233
Aircraft time
63,279 hours
Engine
Pwa JT9D7R4D
Part
Ballscrew
Part number
PNB18834
Condition
Corroded
Location
Stab Trim Actuat
Component
Actuator
Component part number
PN251T4310
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

(CAN) FAULT: WHILE CARRYING OUT AN INSPECTION. FOUND RUSTY COLORED LUBRICANT AND REDDISH STAINING ON THE STAB. JACKSCREW GIMBAL. A PURGING OF THE LUBRICANT FROM THE GIMBAL ASSY WAS CARRIED OUT. THE RUST COLORING WAS CONFIRMED TO BE DUE TO IRON IN THE GREASE. FURTHER INSP ALSO REVEALED DAMAGE TO THE THREADS OF THE BALLSCREW.