PT6 Prop Governor Operational Principles

[@peterbeyl5817]

I'm an "OLD" A/P mechanic and wished I had this animation and clear explanation back in tech school, it would have saved me a lot of OJT time. Thanks and keep up the good work.

[@qpAviation-qp14]

Thank you, I feel the same way. That is why I started doing this.

[@sarafinanthoki5143]

This is the best Prop system explanation I have seen! 🎉 Exceptional!!

[@qpAviation-qp14]

Thank you. I am glad it was helpful!

[@luispendragon6551]

Thank you so much for this excellent video. Starting here my first job with a PT6 as aircraft mechanic.

[@qpAviation-qp14]

You are welcome, congratulations on the new job!

[@larsbkurin1740]

Very educational and nice graphics. This channel was quickly shortlisted as important.

[@qpAviation-qp14]

Thank you!

[@fabianesparza1534]

That’s what I was looking for so much time. I was wondering why some pilots told me that the FTG on PT6 works only when the primary and secondary TG failed and that’s didn’t make sense for me due to so many info finding in websites, however none explanation (text) really help to understand like this video. I will keep waiting for more videos like this, thanks.

[@qpAviation-qp14]

You are very welcome. I am glad that it was helpful.

[@DanielSaunders-m6d]

This video is excellent. I always find in lessons on propellors that the more context that can be given showing the mounting, plane of rotation and direction of travel, help to understand the concept being explained. At 4:30 in this video, if the image is rotated clockwise 90 degrees, the concept becomes much easier to understand.

[@qpAviation-qp14]

Thank you for the idea. I will keep that in mind for future presentations.

[@Rubibi-saltwaterjim]

Best video on this I've seen.

[@qpAviation-qp14]

Thank you

[@Rubibi-saltwaterjim]

Adding the complexity layer by layer makes so much more sense than throwing a full system diagram up at once.

[@johnbalieboardman5324]

Very good! Making this informative video must have taken a lot of work and time. Thank you!

[@qpAviation-qp14]

You are welcome, I hope you have found it helpful.

[@nickwad]

This is the kind of material i crave. Thank you for making this, an instant subscribe, save & like from me. 👍

[@demoitgroup9532]

Brilliant video and channel

[@qpAviation-qp14]

Thank you very much!

[@uTube486]

My God! Such a cool video. Thanks!

[@qpAviation-qp14]

Glad you liked it!

[@SocInfoTv]

Excellent explanation

[@qpAviation-qp14]

thank you

[@mrkc10]

Exceptional video.

[@qpAviation-qp14]

Glad you enjoyed it!

[@rikokabakofficialpapua1750]

I have a few questions bro. Related to Pt6 engine props 1. What happend to the props if eng oil pres drop to 15 PSI ? 2. What action should be taken if props moves to reverse in flight ? 3. What is the max prop RPM before starting a prop overspeed governor check ?

[@Hahaa99]

Brilliant Video

[@qpAviation-qp14]

thank you

[@ruphia]

the P T stands for Papyrus Typeface

[@qpAviation-qp14]

nice

[@erkanorman5936]

perfect explanation, thanx

[@qpAviation-qp14]

thank you

[@bmzinga]

What could be damaged (linkages) if reverse is selected when the propeller lever is not in the full fine (full forward position) while the engine is running? Great video by the way!

[@qpAviation-qp14]

The linkages will not be damaged if the engine is running. Selecting reverse while the engine is NOT running can damage the linkages to the beta system because the slip block can not function properly while the slip ring is stationary. However, if you select reverse with the engine running and the props not full forward, while linkage damage will not occur, the propeller governor may not be able to maintain sufficient oil pressure to keep the propeller in the beta range. This means that one of the propellers may transition to forward thrust production while the other remains in reverse. The resulting control issues may lead to a runway departure and I suppose that if you hit something hard enough that could damage the linkages, along with everything else on the plane. For more information on how this happens look at the video around minute 19.

[@Rubibi-saltwaterjim]

FCU video next please!

[@qpAviation-qp14]

FCU is on the list, hopefully I should have it out in the next couple of months.

[@joshuadrake7960]

May want to check the theory behind aerodynamic twisting and centrifugal twisting. Happy to be educated but normally aerodynamic twisting goes to coarse and centrifugal twisting pitches to fine

[@qpAviation-qp14]

Thank you for your thoughtful comment. It is true that these forces could move in either direction depending on how the manufacture places the pivot attachment and CG of the propeller. The easiest way to determine the direction of these forces is to examine how the counterweight is mounted. If the counterweight is mounted toward or built into the leading edge of the airfoil, its purpose is to move the CG forward. A forward CG will act to pull the propeller to course pitch. This is why many POH and maintenance manuals talk about the counterweights moving the propeller toward feather or course pitch. Alternatively, you could evaluate the mounting point of the propeller blade to the propeller hub. Typically, propeller blades are attached forward of the center point because the increasing camber allows more room to create a sufficiently secure attachment point. If this is the case, there will be more surface area aft of the pivot point and aerodynamic twisting will move the blade toward fine pitch. Ultimately, it is the responsibility of the PIC to know the details of their unique aircraft systems. The purpose of this presentation is to present general principles that can be applied to most systems but there will always be outliers.

[@АндрейЗи-т1я]

This is the best explanation.Could you create a movie how work FCU (Fuel Control Unit) PT6? Please.

[@qpAviation-qp14]

Thank you, I am currently working on an FCU explanation. Watch for it in the coming months.

[@filmmybro5071]

Hellor sir, this is very big help for me becase im not good at english and having difficulties reading on MM. I hope you make another helpful vieos like this. Maybe you can make video for fuel system for pt6 engine also and oil system. Thank you so much

[@qpAviation-qp14]

Thank you for your comments. I plan to produce a series of videos that cover all of the systems of various aircraft including the fuel and oil systems.