BeechTalk - BT - Pilatus PC-12 October Announcement????

Username Protected · **Posted:** 23 Oct 2019, 11:30

Username Protected wrote:

Is there third party information on the speed increase for the new cowling? It seems some have been advertised on other birds that didn't normally make advertised numbers. Just saying.

I'm hoping that the numbers are correct. With increased air, you lower ITT, but you increase torque in order to get more power. That changes your max cruise settings and other parameters. Hopefully Jim will provide the data on that.

Username Protected · **Posted:** 23 Oct 2019, 11:55

Username Protected wrote:

Is there third party information on the speed increase for the new cowling? It seems some have been advertised on other birds that didn't normally make advertised numbers. Just saying.

I'm hoping that the numbers are correct. With increased air, you lower ITT, but you increase torque in order to get more power. That changes your max cruise settings and other parameters. Hopefully Jim will provide the data on that.

Username Protected · **Posted:** 23 Oct 2019, 12:56

Username Protected wrote:

What's the deal with the Prop Low Speed button?

I was told yesterday that it drops the noise by about 2db. 1750 rpm I think it was.
Anyway they say it is amazingly quiet.

Username Protected · **Posted:** 23 Oct 2019, 13:13

I'd like to see a pirep on the cowl. I'm very dubious that all the great engineers at Pilatus would leave 18kts on the table. I'm sure they've analyzed the heck out of that cowl 9 ways to Sunday. Call me skeptical!

Username Protected · **Posted:** 23 Oct 2019, 15:30

Username Protected wrote:

I'd like to see a pirep on the cowl. I'm very dubious that all the great engineers at Pilatus would leave 18kts on the table. I'm sure they've analyzed the heck out of that cowl 9 ways to Sunday. Call me skeptical!

Skeptical bastard!!!!

The engineers may not be as interested in speed as we are. The torque has to go up significantly (I assume) in order to get that speed. 18knots is serious!!!

P&W limit the torque in the max power settings, as does Pilatus in the guages. Just curious what the answers to those questions are.

I'm liking the NGX a little more now that I've gone over it. I wonder with the Fadec improves engine efficiency?

Username Protected · **Posted:** 23 Oct 2019, 15:34

Username Protected wrote:

I'm liking the NGX a little more now that I've gone over it. I wonder with the Fadec improves engine efficiency?

The NGX might be enough to keep me from going to the jet. The speed v jet never bothered me much. I love the big, nice cabin of the NGX. I'd love to see some pictures of the lav.

Username Protected · **Posted:** 23 Oct 2019, 15:39

Username Protected wrote:

I'm liking the NGX a little more now that I've gone over it. I wonder with the Fadec improves engine efficiency?

The NGX might be enough to keep me from going to the jet. The speed v jet never bothered me much. I love the big, nice cabin of the NGX. I'd love to see some pictures of the lav.

Username Protected · **Posted:** 23 Oct 2019, 15:42

A nice cabin and lav and WIFI makes you forget how long the flight is.

I also want to know how come the PC12NGX no longer needs Prist?

Username Protected · **Posted:** 23 Oct 2019, 15:45

Username Protected wrote:

I also want to know how come the PC12NGX no longer needs Prist?

Me too, how they heating the fuel in the wings?

Username Protected · **Posted:** 23 Oct 2019, 15:55

Username Protected wrote:

Skeptical bastard!!!!

The engineers may not be as interested in speed as we are.

Alright bud, will let you drop the 85k and let us all know how it works out!

I mentioned all this to the owner of the one I fly and the only things that interested him were the quiet mode and WiFi.

Username Protected · **Posted:** 23 Oct 2019, 16:15

Username Protected wrote:

I also want to know how come the PC12NGX no longer needs Prist?

Me too, how they heating the fuel in the wings?

Username Protected · **Posted:** 23 Oct 2019, 16:42

Heated fuel is nice, but it's still a good idea to add prist for it's anti-fungi/microbial benefits.

Username Protected · **Posted:** 23 Oct 2019, 16:52

Username Protected wrote:

Heated fuel is nice, but it's still a good idea to add prist for it's anti-fungi/microbial benefits.

Amen brother, but it saves me dragging prist down to South America

Username Protected · **Posted:** 23 Oct 2019, 18:00

Other aircraft, primarily jets, certify without prist by testing with the specified amount of water in the fuel. These have a heated (usually engine oil) engine filter.

The problem in the past on PT-6 installtions is that the installation manual requires an airframe fuel filter in addition to the engine fuel filter. A bypass indication is also required on newer (post mid 70's) designs.

Since the filter is required, it must be protected from ice. It would be difficult, but not impossible, to provide ice protection, likely involving a bleed air to fuel heat exhanger. Prist has been the usual solution. Some sort of ELOS or exemption might be possible, but I don't know that it has ever been pursued. I believe at least some King Airs were certified before the requirement existed.

Don't know what Pilatus did.

The electric heaters mentioned previously protect the Py lines and do not heat the fuel.

Username Protected · **Posted:** 23 Oct 2019, 18:29

Username Protected wrote:

I'd like to see a pirep on the cowl. I'm very dubious that all the great engineers at Pilatus would leave 18kts on the table. I'm sure they've analyzed the heck out of that cowl 9 ways to Sunday. Call me skeptical!

Seemingly Socata/Daher waited till the 900 series to do a similar Cowl change on the TBM.