Service difficulty report · Rotor · Doug MD9030

Difficulty date
September 29, 2010
Submitted
October 8, 2010
Operation
General aviation
Make and model
Doug MD9030
Part
Rotor
Part number
64315107
Part serial
AEM163
Condition
Damaged
Location
Pump
Part time
5,937 hours
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

(HZ3R) PUMP ASSY HAD SEVERE DAMAGES, SUCH AS GEAR BUSHING BROKE AND GEAR SHAFT DISASSEMBLE FROM NORMAL POSITION (STILL MOUNTED IN THE ROTOR) STATOR ASSY - SEVERE DAMAGES FROM ROTOR ASSY END BELL ASSY - LINER HAS BEEN DISINTEGRATED. LINER MOUNTING STRUCTURES ARE COMPLETELY DESTROYED. ROTOR ASSY - EXCITER AND MAIN STATOR SEVERE DAMAGES. PMG AND ROTOR ASSY WAS PUSHED UP WHICH MAY HAVE CAUSED THE UNIT TO SEIZE. OPEN

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