Service difficulty report · Blades

Difficulty date
July 17, 2012
Submitted
September 14, 2015
Operation
General aviation
Engine
Pwa PT6A42
Part
Blades
Condition
Damaged
Location
Compressor
Stage of operation
CR
How discovered
O
Nature of condition
R
Precautionary procedure
A

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

What was found

(CAN) DURING TAXI FOR T/O, THE PASSENGERS ON BOARD HEARD A CHANGE IN ENGINE PITCH NOISE AND ALERTED THE PILOT WHO IMMEDIATELY ABORTED HIS T/O PROCEDURES. THE ACFT WAS RETURNED TO THE BASE WHERE GROUND TEST REVEALED THAT THE ENGINE COULD NOT REACH T/O POWER DUE TO TEMPERATURE LIMITATION. TROUBLESHOOTING IN THE PRESENCE OF FSR LED TO THE DISCOVERY OF A FRACTURED 1ST STAGE COMPRESSOR STATOR VANE. FOREIGN OBJECT DAMAGE, FOD WAS FOUND ON ALL BUT 1, 1ST STAGE COMPRESSOR BLADES, MOST OF IT LIGHT IN NATURE BUT ONE OF THE BLADES EXHIBITED IMPACT MARKS AND TEARING. THE ENGINE IS TO BE REMOVED AND FORWARDED FOR INVESTIGATION.