SDR 2017F00090

Service difficulty report · Dampener · Diamon DA42NG

Difficulty date
March 1, 2017
Submitted
April 13, 2017
Operation
General aviation
Aircraft
N417TS
Make and model
Diamon DA42NG
Aircraft serial
42AC017
Aircraft time
1,498 hours
Engine
Austro E4
Engine time
1,188 hours
Propeller
Mtprop MTV6A
Part
Dampener
Part number
RC1700814
Part serial
01640
Condition
Broken
Location
Lt Prop Hub
Stage of operation
TO
How discovered
O
Nature of condition
R
Precautionary procedure
C

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

What was found

DURING THE INITIAL TAKEOFF ROLL, THE LEFT PROPELLER DID NOT RESPOND TO THROTTLE APPLICATION. MAINTENANCE FOUND TORSION VIBRATION DAMPENER HUB BROKEN, WHICH DISCONNECTED ENGINE TO GEARBOX DRIVE TRAIN CONNECTION. TVD WAS ALSO FOUND CRACKED, CONTAMINATION IN GEARBOX, AND PROPELLER GOVERNOR SEIZING DUE TO SUSPECTED GEARBOX CONTAMINATION. TVD, TVD HUB, GEARBOX, AND PROP GOVERNOR REPLACED.

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