Service difficulty report · Stator · Dorner DO328100

Difficulty date
July 16, 2013
Submitted
September 14, 2015
Operation
General aviation
Make and model
Dorner DO328100
Aircraft time
13,652 hours
Engine
Pwa PW119B
Propeller
Hartzl HDE6C3B
Part
Stator
Part number
3073624
Condition
Damaged
Location
Engine
Part time
14,786 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) ON A WALK AROUND INSPECTION OF THE DO 328-100 AS LISTED ABOVE, IT WAS NOTED THAT WHILE ROTATING THE NR 2 PROPELLER BY HAND THAT A SLIGHT RUB AND SLOWING OF THE PROP OCCURRED. A BOROSCOPE INSPECTION WAS COMPLETED AND FOUND SLIGHT RUBBING OF THE PT BLADES INSIDE THE PT PACK. THE ENGINE WAS THEN PUT ON AN ADVANCED MONITORING INSPECTION AND THE RUB CONTINUED. IT WAS THEN DECIDED THAT WE SHOULD PULL THE ENGINE AND GO INSIDE TO TAKE A CLOSER LOOK. UPON DISASSEMBLY OF THE ENGINE AND THE PT PACK IT WAS NOTED THAT THE PT2 STATOR WAS OBLONGED, OVAL SHAPED AND THEREFORE UNDERSIZED ON 2 SIDES RESULTING IN THE RUB. THE PT2 STATOR WILL HAVE TO BE REWORKED AND REPAIRED BEFORE REASSEMBLY OF THE PT PACK.