In essence, regarding prop lever settings, the only pilot action during a “normal” flight in this type of aircraft is as follows:

-Props full forward (fine pitch) for taxi and Take Off. See Note 1 below.

-Adjust the props to “Maximum Continuous RPM, or Climb RPM shortly after take off. See Note 2 below.

-Reduce Prop RPM for the cruise. See Note 3 Below

-During the approach phase adjust your props back full forward for the landing (reverse thrust) or for the anticipated “go around”. See Note 4 Below.

That’s it. The rest of the time, the governor works to achieve the RPM that the pilot has “asked for”/selected. So when there is excess power, it simply reduces the pitch of the blades to take a bigger “bite” of the air.

Notes.
Note 1: The props won’t achieve the High RPM you require, until you apply sufficient power using the power (thrust) levers to turn them fast enough. Once you have enough (and excessive) power, the governor will continuously adjust the propeller pitch to maintain the RPM you requested.

Note 2: In the C90GTX, the difference between Maximum RPM (time limited) and Maximum Continuous RPM is very small. Just a fine tickle back of the prop levers. If the props are rigged correctly, this is a change of 1,926 RPM to 1,900 RPM. In other King Air models, the difference between Max RPM and Max Continuous is more of an adjustment. (300-400 RPM in the in the models I’ve flown)

Note 3: Refer to the Cruise Tables in your Pilot Operating Handbook. In this particular model, you can leave the props at 1,900. We do however tend to adjust them to 1,800 for longer cruises, because it changes the “tone” of the props to a more comfortable one for passenger comfort.

Note 4: Pilot technique differs here, based on the types of props you have fitted, runway available and passenger comfort. In the C90GTX, I always adjust the Props to full forward in the final approach phases of a flight. That way, the “Reverse Thrust” is ready on the ground and I simply have to put the power levers in reverse. Same with a go-around... it leaves me less things to do.
In the B200 or other models of the 90 that I’ve flown, you could be adjusting the props from 1,600 to 2,200 RPM ready for the reverse or go around. This can have quite a noise increase for passengers. So, many pilot choose to leave the props where they are until after touchdown, when they will then whack prop levers full forward before applying reverse thrust. This of course, is runway length and other conditions permitting.

I know this is a long reply, so I’m going to add it to the description of the video. Hope it helps.

Mode Sierra

3y↑3

In my learning thus far (and thankfully not experience)... it is becoming clear that the main cause of a “hot start” is a weak battery.

So the most fundamental way of avoiding a hot start is:
1. Ensure your battery is in good condition and sufficiently charged.
2. Turn off all electrics that could be draining the battery. In my experience the main drains of battery power that can be left on unintentionally is the “Cabin Temp Mode” switch, and window heat switches.

So in a nutshell, check that your battery is charged, and make sure you’re giving it the best chance to turn the turbine when starting the engine.

I also keep a keen eye on my “fuel flow” gauge once I have advanced the fuel condition levers. An abnormal (higher than normal) fuel flow could be your first indication of a potential hot start, even before ITT starts rising fast.

All comments from YouTube:

Posttrip

3y↑139

The King Air is just a gorgeous turboprop inside and out. But, really love the cockpit.

Dave Crupel

3y↑3

It's also a ferocious sounding plane.
That prop tone you hear at 2:10 is often the loudest sound at the airport if it isn't a military base.
I call King Airs the Dodge Hellcats of General Aviation. Because they sound mean as can be, they sound powerful, and they are a joy to listen to. (Even a bit humbling when you're right up next to one while its running)
Even if you need hearing protection within 700 feet of them 😅

Hekate

3y↑2

As someone that’s worked on these things & hates them with a burning passion I just wanna say that I appreciate people like you who love them. They do look good though. 😂

Dale Persails

Yeah, it’s gorgeous, but the inboard tanks between the engines and fuselage are a pain in the a$$ to get to and fuel!!!

Posttrip

@Dale Persails. Not ‘signal point?’

Dale Persails

@Posttrip Nope. One, two or three tanks per wing with the mains being between the engines and fuselage

3 More Replies...

Noble Goldheart

1y↑1

0:55 I love that sound when a king air starts! I've gotten to work on some king airs in the hangar I work at, while they're a little difficult as far as their engineering goes, they are a joy to look at, and a joy to be around. King Air is easily one of the best planes ever built.

David McC

3y↑96

Brilliant video, simple to understand, amazing to see the feathering mechanics at work and whilst for many this might seem banal, I found it fascinating.. Well done lad for a super piece of footage and delivery.

sigi strele

3y↑1

I agree! And I love Beaker!! Greetings from Austria

Mode Sierra

2y↑1

You’re very welcome!

Wolf Pilot

3y↑12

I love this video! What a concise explanation of how the prop control works!

R.Walt61

3y↑2

This is one of the best videos that explains and shows how the props change pitch and I too love that turbine sound. The KingAir is a beautiful aircraft.

Tuomas Syrjäniemi

3y↑2

Interesting! I used to fly my multiengine schoolflights at c90. Nice plane and plenty of power. You have even glass cocpit! We had steam gauges all over 😄

snyper7979

3y↑123

Either thats a brand new aircraft, or someone has been taking very very good care of the control panels. Not a scratch on them, they all look brand spanking new

Mode Sierra

3y↑65

Thank you! Aircraft about 7 years old and just over 1,000 hours!

jason

3y↑11

@Mode Sierra it's very obvious you give this craft the attention/care it deserves

Mode Sierra

3y↑18

@jason Credit goes to the engineer/mechanic. I look after it in the sky.

Larry Finke

3y↑10

Good illustration of how many systems and controls come into play just to start the engines. Thank you!

L'aviateur du TRPG

3y↑3

Very nice and very nerdy. Thanks for uploading and catering for those of us who like to see what goes on under the cowls, covers and access panels.

Pandatrack

3y↑1

Really interesting video. Thanks for taking us thru each step and explaining the reasoning for each.

FlyTwoHigh 83

3y↑2

Thanks for that demonstration. Its good to see it in real life. Keep'em coming, love the King Airs

Smithy18

3y↑2

Loved flying this. If I had the cash, it would be my taxi!

The EFIS is a bit more modern than what I was used to!

realamerican 1

That was incredible. Very few vids that have an actual person with actual knowledge. Would love to see the inside mechanical part of pitch

lightespeed

3y↑4

That was very informative and concise, now I'm sure I can fly it! I'm interested in the mechanical linkage that alters the pitch of the propellers.

Mode Sierra

3y↑1

Hi, if you research “propeller governors” you’ll see how the governor works to maintain propeller RPM using engine oil.

tombmaster972

2y↑1

fascinating demonstration! your camera even enables to see the propeller pitch movements!

mrschellfisch

3y↑2

Thank you for showing the prop mechanism, never actually saw it in action during eight years of aviation! Gotta love pilots thinking of the community while doing those kind of tests :-)

Got a question for you: Why do the boost pumps need to be on during shutdown or a least until N1 being below 10 percent? The condition levers are already in the cutoff position, why worry about boost pumps and N1?

Mode Sierra

3y↑3

You are welcome! Glad you liked it. Someone else asked the same question, so I’ve copied the answer. Let me know if it explains it ok.

The purpose of the electric boost bumps is to prevent cavitation of the engine driven fuel pumps. Cavitation (destructive) happens when there is back pressure in the fuel flow and “bubbles” that vaporise form in the fuel pump. Cavitation can destroy your engine driven fuel pump over time. And no engine driven fuel pump means “bye bye engine”. The electric boost pump operates at a much lower pressure than the engine driven fuel pump and can’t support the required fuel pressure for the engine. It only serves to protect the engine driven pumps from cavitation damage. Above 10% The electric boost pumps still do their “job” of preventing cavitation. Once below 10% the risk of cavitation ceases and the boost pumps can be turned off. Hope that explains it ok.

Deocles Corso

Fantástica tecnologia!

Joe Vignolo r4u

I found it interesting that as you varied the prop pitch the RPM changed. I'm familiar with the turboprop engines used on the C-130 Hercules. On those engines the RPM's are tightly governed to a very narrow speed range of about + or - 1.5%. When the pilot increases the prop pitch the torque and fuel flow increase drastically but the RPM's stay constant. I thought all turboprop engines worked like that.

insylem

3y↑1

The C130 uses a fixed turbine. All the engine and prop are geared and run together. This video shows a PT6, its a free turbine. The compressor is mechanically independant of the power, and its driven by exhaust gases from the compressor. Ive seen people hold the propeller still while running the engine to check for leaks.

realvanman1

3y↑1

Fascinating! It is interesting how those boost pumps would run, even before the battery master switch was switched on.

Mode Sierra

3y↑2

Yes, they are on the “hot bus” and one of the C90 “gotcha’s” to look out for. Could drain the battery regardless of battery switch position.

Wallace Shackleton

3y↑10

Thanks, believe it or not I've always wondered what the change in engine noise was on start-up. Now I know it's the revs changing as the governor takes over.

Dale M.

3y↑7

You are right, not something you get to see very often. I like that you went through the start up. Good video. Thanks for sharing.

Fritz

4y↑13

Nice simple demo and explainations, thank you!

Mode Sierra

4y↑4

No problem... sometimes simpler is better hey :)

SailingFrolic

3y↑1

This guy is a legend. He says Governor like a proper champ, and he sets the prop rpms to 420 in the video and doesn't even make a joke about it, but pauses a bit when saying it and hurries over it.

Mode Sierra

That’s such a smart observation! Love it.

ИIМI James

3y↑1

Thanks for taking the time to show this Johan and explain what the mechanisms are doing too.

Dan Manthe

3y↑18

Makes me wish that I could have gone to pilot school. That was beautiful

Mode Sierra

3y↑2

Do it!

Dan Manthe

3y↑1

I don't know what company would want to hire a pilot as old as I am. At least from the research I've done

Wowwowwiiwowiwwiwiwiwiwiwiwiiwieeieieiieeieieeieie

How old are you sir?

Oscar Scheepstra

You can always fly for a drug cartel in the middle of a jungle. :D

4 More Replies...

jeruman

Thanks captain for the excellent demonstration 👌

Mode Sierra

You got it 👍🏻

Najam us Saqib Minhas

3y↑1

Great video .. never saw propeller pitch change function in action before .. good one

Perseus1275

3y↑1

Fascinating, I could listen to those engines all day. Thanks for the up.

SovereignC680

4y↑7

perfect, thanks for this lesson :-)

Christopher Bashimoto

3y↑1

I worked on 350’s and next will be 1900’s. In my opinion, beautiful aircraft.

Mountain Mike

3y↑1

King Airs are so sweet. Thanks for the demo, it's fantastic.

richardson reis

3y↑1

Very Nice video! Completely clear, direct and didatic. Great!
Hello from São Luís Maranhão Brazil!

JombieMann

3y↑7

I remember on the 99's every winter rigging the reverse torque and every spring rigging them back. This was in northern Ontario where winter daytime temperatures could be below -30c.

Mode Sierra

3y↑1

I just know you have interesting stories as soon as you mention 99’s and Ontario Winters.

JombieMann

3y↑3

@Mode Sierra I worked for Bearskin from 86 to 88. Seen plenty of 99's operating in some harsh conditions.

insylem

3y↑1

That's neat! The strobographic effect of the camera shutter rate really helped to see it. Question: I noticed you started in Feather. Do your planes have issues with the leading edge between the fusalage and the nacel taking overheat damage from the exhaust when running in feather?

Mode Sierra

Ahhh... so that’s the real name of the camera effect :) thanks.

We haven’t had any “overheat damage” no. One Issue or King Air 90-ism we have found is that the exhausts really cause quite a soot build up over time that require us to wash the plane fairly regularly. I don’t think this is related to starting in feather, and I’m aware that there is a (very expensive) kit out there that can be fitted to avoid this.

Juppie902

3y↑16

Fine: pushes air, lets you fly
Coarse: almost no air resistance, lets you glide

Atypical

3y↑1

The way I used to remember it is Coarse sounds like Cut, props turn into little knives in the air.

Matthias Patzelt

3y↑4

Fine: pushes little air per revolution, results in higher RPM and less torque, keeping power reserves for go-around etc.
Coarse: pushes more air per revolution, lower RPM, higher torque. Too much torque will damage the engine.
Feather: pushes little to no air, reduces drag and allows for better glide performance in case of engine failure

Huzzir Zakaria

@Matthias Patzelt thanks, sure its nothing for those who knows but means a lot for those who know nothing like me... 😅👍

Juppie902

@Matthias Patzelt wait, i thought coarse is feather in props ?!
because the angle of blades in feathering and in coarse results in little to no RPM

Huzzir Zakaria

Although I knew almost nothing about aircraft, this vid is very interesting for me (and others alike)... Thanks for the rare demo. Be safe 🌹

Ol_smokey93

3y↑1

Way fancier than the B200 I maintain. It's missing all the steam gages and the overhead switch panel!

you know everything

The company I am a private pilot for I'm 33 years old and they have 2 beautiful king airs and a Gulfstream G700 that I have confirmed that the Gulfstream g700 will top out at 0.999 Mach with a tail wind even though the g700 is a really fast fun jet I love flying the king airs better they are like the demon hellcat of the private airport

No Body

3y↑2

Always wondered if that dramatic drop in power turbine rpm creates a huge force in the reduction gearbox when feathering like that.

Mode Sierra

It’s the sound that makes it worse than it is. In essence it’s only a 700RPM drop. And the drop happens slower than the sound suggests.

No Body

@Mode Sierra not in the turbine it’s not. Turbine spins much faster than the prop. It’s a 15:1 reduction so that’s 15000rpm down to 6000. Lots of intertia involved

Calvin Nickel

3y↑1

You can see the force on the torque meter. It’s basically just measuring oil pressure as compressed by piston connected to one of the ring gears in the RGB.

Feather it at close to max torque. Yeah, you’re going to overtorque it and damage the RGB and other things. Feather it at idle? Hardly noticeable.

cavok76

3y↑3

A very good, educational video.

Northwest Aeronaut

This was great to see behind the curtain a bit. Thank you 👍

Michael Pare

3y↑1

What an awesome video,thanks!

Tim

3y↑1

Lovely demo!

Kyle Hollens

Great demonstration!

Sturvin Murvin

4y↑6

Great demonstration! Thanks!

Mode Sierra

4y↑1

I’ll do some more some time

Maris G

3y↑1

Great video instruction!

Josh Howell

4y↑2

Awesome video!! Thanks for this!

Paul Hatfield

1y↑1

Does running in the feathered position make the power turbines run hotter ? Going from fine to featherd lost you something like 65% prop RPM. Are there any drawbacks to that kind of speed loss ?
Great video by the way!!

Mode Sierra

In my experience the turbines might run slightly hotter but totally negligible. To me, the benefits of starting with the props feathered outweigh the disadvantages. Things like: Quieter, friendlier to ramp personnel, if there is snow/ice etc… inadvertent taxying if the parking brake loses pressure etc.

Paul Hatfield

1y↑1

@Mode Sierra hey mate.
Super interesting. Not a pilot but fascinated by these machines. I do volunteer ambulance work in a remote community in Western Australia. We transfer patients to the local airport and its most often a PC12 that picks them up. Spool up time is so fast on these things. I fly RC jets and our miniature turbines take longer to start than a pt6.

Drum Covers by Bill

3y↑1

Very cool. Thanks for sharing.

Aviation Projects and Actions

3y↑8

That was really interesting to watch without engine cover.

One question, which may appear really minimal, but when you toggle some switches you use a thumb and forefinger movement as if "pulling" the switch. Is this a mechanism in the switch requiring to pull it out, or is just best practice so you know you've completed it?

Mode Sierra

3y↑5

That’s a good observation. Yes, your assumption is correct. Some switches on the panel are of the type that requires you to pull the switch before moving it. This is to avoid unintentional or accidental switching.

AirplaneWilly

3y↑4

I agree with Johan, that was a really good observation. I tried to find a diagram of one, but couldn't. Essentially some of the King Air switches have a tooth that you have to pull the spring-loaded sleeve on the switch back over the tooth to shut it off. That is so they aren't inadvertently turned off in flight. If I find a diagram I'll come back and post it.

Phil B

3y↑1

@Mode Sierra I noticed that too. I thought with that panel down by your left hand side you could wreak havoc with just the brush of an arm.

Now I know why you don’t. Thanks very much 👍🏻👍🏻

Yolnahs Classics

3y↑1

That was fascinating 😀

Alex Moose

Beautiful aircraft

Mike Cooper

3y↑1

Used to love cranking up the APU on the C-141B. Sweet music to the ears.

sioul2006

3y↑1

Hey, what do you use what prop setting for? Heard it’s like shifting gears(?) do you use the low angle of attack of the prop-blades for acceleration then and the high angle of attack once you’re in a faster cruise flight, like an overdrive gear? I’d love to hear from you, since I’ve never operated any plane that used an adjustable prop! 😄

lancelotvt

3y↑1

Fine pitch on the blades to achieve a higher RPM to increase climb performance at lower altitudes where the air is more dense. Once the aircraft is level at altitude feathering the props allows the blades to more effectively "bite" in to the less dense air increasing engine efficiency.

Mode Sierra

3y↑1

sioul2006

3y↑1

@Mode Sierra Man, this helped for sure! I really appreciate your effort to response so detailed!
I’m not very experienced yet, mostly flew sailplanes and once in a while single engine piston‘s with non-adjustable props.
There’s always something new to learn every day. It seems a little complex, looking for the prop setting as well, but I’m pretty sure once you get used to it it won’t be a problem at all.

Thanks again for the long reply, I really enjoyed reading this and it helped me a lot! :)

sioul2006

@lancelotvt Thank you very much this helped me get a general understanding very much! :)

lolus pololus

Great video ,thank you !

Rafi Arya

3y↑1

Amazing!

Roy Burns

Thanks you answered several questions I had

Carlos Barrena

Very interesting demonstration, Thanks

BJ-Hawk

3y↑16

I love the start sound ❤

pieter pretorius

the PT6 is a nice engine to begin with

ActionHeinz

3y↑1

Cool! But the master switch looks as if it could be easily knocked down by accident or is there any safety lock? I guess it's not a pleasure to accidently hit that flap when you are in mid air 😅

Mode Sierra

3y↑1

Hi there, it’s not a problem. It actually requires a bit of force to push it down. I’ve never heard of a case where it was accidentally done. :)

ActionHeinz

@Mode Sierra Thanks for the answer 👍

Nic Most

Nevertheless a good explanation of quite difficult terms in gas turbine engines I don't understand.

onur 1091

3y↑1

incredible video thx

Greg Faris

3y↑1

ProLine 21. - 135 power plant. Ideal configuration for the KingAir 90.

Mode Sierra

Can’t knock it! It crazy to think that Pro Line 21 is already considered “old”... with the Pro Line Fusion replacing it.

Greg Faris

3y↑1

@Mode Sierra Thanks Johan - I agree. Fusion is much more modern from a design perspective, but from a pilot's perspective (and the KingAir is the ultimate "pilot's flight deck") ProLine 21 is atleast its equal, and in my opinion easier to use.

Rum Becker

I flew a BE20 with no FD, it literally had an old 172 style AI

Tom Tonks

absolutely love this

Jace Curtis

3y↑1

What a treat thank you!

Thomas Gabrielsen

3y↑1

Very interesting! The clicking sound we can hear at 00:40, is that the fuel igniter?

Mode Sierra

Hi, yes it’s the igniters firing away in the combustion chamber ready for fuel (and compressed air) to be introduced.

Thomas Gabrielsen

@Mode Sierra Thank you!

Dana Kotze'

3y↑1

Nice video👍

David Clawson

3y↑1

Beautiful.

Lucas Duarte

3y↑8

Thank you for this video!

Taz B

3y↑6

Reading about this in theory makes me scratch my head wondering what the heck are they talking about. Thanks to your video I can finally visualize it properly.

CalPal99

3y↑1

Love it!

devin goonetilleke

3y↑1

loved it

RedLP5000S

1y↑1

I had no idea that the propellers can be repositioned.

GreatFlyer

3y↑79

Very interesting, thanks!

Huzzir Zakaria

Quick question, do ones require somekind of key or card to start an aircraft (ie like starting a car engine) before all those starting seq? 🙏

09shadowjet

Question: How short can a King Air takes off let's say at an airfield with 25 feet MSL elevation and an OAT of 30°C, wind calm? And can it takeoff from a grass runway?

Mode Sierra

Without getting the POH out, I can tell you that I have many times taken the C90GTX into and out of a grass airfield that is 800 meters long. Max 4 occupants and 1,400lbs of fuel. That’s just over two hours endurance.

09shadowjet

@Mode Sierra thank you for the answer! It's quite a versatile plane yeah?

Adam F.

3y↑1

This is sooooo cooooool!

dieselyeti

3y↑4

Great video. Why do you wait until N1 is below 10% to shut off the boost pumps?

Mode Sierra

3y↑9

Hi there, the purpose of the electric boost bumps is to prevent cavitation of the engine driven fuel pumps. Cavitation (destructive) happens when there is back pressure in the fuel flow and “bubbles” that vaporise form in the fuel pump. Cavitation can destroy your engine driven fuel pump over time. And no engine driven fuel pump means “bye bye engine”. The electric boost pump operates at a much lower pressure than the engine driven fuel pump and can’t support the required fuel pressure for the engine. It only serves to protect the engine driven pumps from cavitation damage. Above 10% The electric boost pumps still do their “job” of preventing cavitation. Once below 10% the risk of cavitation ceases and the boost pumps can be turned off. Hope that explains it ok.

Dylan Clements

3y↑2

@Mode Sierra You seem extremely knowledgeable about these planes. Thank you for sharing.

Mode Sierra

@Dylan Clements Always learning! Are you related to Tom Clements?

R Lyle

3y↑1

Great video!

Q&TheMerry BandOfAnons

3y↑6

God that is such a beautiful airplane.

bliglum

Agreed, King Air is easily one of the most handsome twin prop planes ever built.

phips d

3y↑1

This is super interesting!

UK Aviation Movies

3y↑2

Cool vid 😎👌👍

Timothy Kruger

Great video! Which airport is this at?

Alferfoot

3y↑1

Wow...that is awesome ...

NIKONGUY1960

3y↑2

I don't fly so this means nothing to me but it came up in my feed so YT felt I needed to see this. Was not disappointed. My inner geek has been satisfied.

Mode Sierra

Hahaha. Glad I could help and find mutual geekinessz

Graf Hilgenhurst

3y↑1

Great demonstration! How many gallons of fuel did that manage to burn in 3:46?

Mode Sierra

3 Gallons :)

270lbs per hour at idle

KJJONES

3y↑1

Very neat

TheDustysix

3y↑1

A C-130 doing a pitch test is torture. LOUD!

Mode Sierra

3y↑1

Oh I can imagine!

Feelings For You

3y↑1

Yes, now I know how to start this plane in X-Plane 11. 🤪

Scramble Diaz Luque

Marvelous 😍

William Turner

3y↑1

One of the top FIVE Wonders of the mechanical WORLD: the PW PT6. PW of 🇨🇦.

Mode Sierra

Indeed!

Whirlynerds

3y↑1

Best video I've seen to date!

Mode Sierra

3y↑1

True praise! I got into helicopters too in the last few years! From your profile pic, you could teach me a thing or two!

Whirlynerds

3y↑1

@Mode Sierra I'm a true fan! loved helis since age 3. This is the first video I've found that answers all my questions in full, i'll be sure to check out your others ;)

Mode Sierra

3y↑1

@Whirlynerds I’ve been reluctant to post more, but the response has been encouraging.

Stephen Woods

That’s fascinating, but...why isn’t it all automatic, as in , computer controlled with multiple redundancy and just one start switch? When I start any of my machines, their processes can’t be too simple compared to running an engine on a plane? Yet they only have one start button. Of course you should have total control available through layers of screens, etc. but it just seems far too complex for just starting a turbine?

Mode Sierra

3y↑1

Hi Stephen, I think you make a fair point.

But it’s important to remember that these King Air designs stem from the 1960’s. Whilst many improvements have been made to the aircraft, it is yet to feature a fully automated start procedure like you get on FADEC controlled engines. The helicopter I’ve flown is a turbine engine that starts fully automated by the flick of a button.
Same with the Challenger 300.

Many other aircraft of course, but I just mention the ones I’ve experienced.

Stephen Woods

@Mode Sierra Thanks for that info. I didn’t know that aircraft was so old!

Paul Bickley

3y↑3

I am curious how do you prevent a hot start?

Mode Sierra

3y↑3

Nathan Theriault

3y↑2

Additionally, when possible face the plane into the wind and consider delaying the introduction of fuel until a few seconds after rpm and temperature criteria for fuel introduction have been met. Consider even waiting long enough for the RPM to top out on the starter before light-off.

Mode Sierra

3y↑1

@Nathan Theriault Yes. Especially when doing a quick turnaround. Many pilots rush after the “minimum RPM”. When doing a quick turnaround intend to run the starter an extra 10 seconds or so and watch the ITT drop before introducing fuel.

Dutchpilotbobby

How come the rpm rises when turning the props to fine position? Is that because of the blades having less air-resistance?

Mode Sierra

Yes. The engine is producing the same amount of power, but the blades are easier to turn.

The analogy of having your hand outside the car window comes to mind. If the car does the same speed it’s easier to keep your hand there when your hand is parallel to the road as opposed to 90 degrees to the road (vertical).

Dutchpilotbobby

3y↑1

Very good analogy! Good to know my mind works right, haha.

Ughhh i can only dream of flying a King air. My absolute goal in life.

Love it!

Capt Bob

3y↑1

Dare I ask what mode the radar is in while ground folks walk about in front???

Mode Sierra

3y↑1

It is off :) On the ground it needs to be specifically switched on (as opposed to left on).

If you have the radar on before landing, it switches to standby automatically after landing.