Thielert engine failure

[darkbarly]

Can anyone advise if the Thielert powered, FADEC controlled C172 constant speed prop will windmill if the engine loses power(assuming glide attitude)? Not willing to demonstrate engine stop until I understand potential problems...

[Rivet gun]

Since it is a geared propeller I would think it would probably not windmill? Same engine in the Twin Star, but that autofeathers.

Is there no clue in the flight manual supplement, e.g. a engine failure or in flight start procedure? If not perhaps you should contact Centurion or the UK STC holder.

I would be interested to know the answer.

[RAMPGUY]

The prop should continue to windmill above 65KIAS if it does not then it should be investigated before you attempt a restart.

[Rivet gun]

The prop should continue to windmill above 65KIAS if it does not then it should be investigated before you attempt a restart.

Thanks, can you cite the source document where you found this information?

[RAMPGUY]

yep it's on p3 of the emergency proc's in the Thielert supplement.
Also know from experience!!!:eek:

[Double Zero]

Pray tell a non driver but interested party sitting beside, what 'investigations ' on the way down ?! Quite used to gazing gormlessly at guages.

I've experience of coming in on a deeply disturbed engine ( & pilot too but that's another story ) - would be rather nice if it feathered rather than knocking up drag, 65 kt sounds a bit borderline to me - luckily never had both snags at the same time.