kgruber
Final Approach
If you topped off the first Learjet (which was a necessity) there was zero payload.
They aren't necessarily taking off with full fuel. A PC-12 can fly like 1800 nm on full fuel, which is a distance they nearly never are going to fly.
There are lots of airplanes that have "poor" payload capacity with full fuel. The Challenger 605 I fly can only carry about 400 lbs of payload with full fuel, but we very rarely need that much gas. I flew a PC-12 for 2500 hours, and I think I only had to make an enroute fuel stop 2-3 times.
Follow-up question for you guys.
It looks like the PC-12s have a maximum payload with full fuel of 988 lb. (https://www.pilatus-aircraft.com/en/fly/pc-12) and the King Air 350s have a maximum payload with fuel of 1,534 lb. (https://beechcraft.txtav.com/en/king-air-350i). If that's the case, how do these planes ever fly at or near their capacity?
For example, if you're looking to fly them with two pilots and eight passengers, and you assume the average American male weighs close to 200 lb., wouldn't that mean that for both aircraft you're already in excess of the maximum payload with full fuel? (And that's without even factoring in luggage.)
Or am I misunderstand how maximum payload with full fuel is calculated?
Granted, it would be a slow trip, but do you think a PC-12 could pull off a flight like LAX to YYC without a fuel stop, assuming two pilots, eight passengers, and minimal luggage? Or would you likely have to drop down by a passenger or two in order to pull this off?
How about with the King Air 350, which I believe has slightly greater range?
Punching that into ForeFlight Performance on a PC12, I'm getting about 5 hours and 2,000 pounds of fuel to make that trip. Figure you'll want another 400 pounds of fuel for reserve. It looks like the full fuel capacity of the PC12 is 2704 pounds, so if you leave behind 304 pounds of fuel, you would have 1292 pounds available for payload to make that flight nonstop - Not enough for 10 aboard.
BTW, scroll down on the page you linked to above for the PC12 and they have a nice rangefinder where you can click on your departure point on the map, put in how many pilots and passengers you want, and it'll give you both a mapped and numeric range. That will answer some questions for you very quickly...
Again punching this into ForeFlight Performance for a King Air 350, now I'm getting a slightly shorter flight at 4:47, but burning 2558 pounds of fuel. Using about a 540-pound reserve this time, that means we can leave behind 500 pounds of fuel and take 2,034 pounds of payload, so now it's doable. The King Air 350ER (Extended Range) variant should have no problem completing the mission.
Just for kicks, now let's look at doing this in a jet instead. Going back to Pilatus and their PC-24, this time the trip takes less than 3 hours. You'd burn about 3400 pounds of fuel and want a reserve of maybe 1150 pounds, you'd have the ability to take the same payload as the King Air while getting there much faster.
In the PC-12 the max takeoff weight is 10450. If you plan on 7200 for the Operating weight (Aircraft, crew of 2, crew bags and catering) and 1500 for the passengers (6 passengers in the Executive configuration and 300 pounds of bags) you will have 1750 left for fuel, which is enough for a flight from KLAX to KJAC with no alternate. So in reality you would want 4-5 passengers at the max. As others have said you may want to look at the PC-24Makes sense. Roughly what's the maximum range of a PC12 when it's at capacity and flying into high altitude mountain airports? (The passengers would not have significant luggage.)
Thanks again, @flyingcheesehead! Super helpful. A few questions on your analysis here...
• How are you determining the amount of reserve?
• Is the final payload number, e.g. the 1,292 pounds of payload in your PC-12 example, all the capacity you have for passengers *and* two pilots? Or are the pilots already accounted for?
• Interesting on the PC-24, though I guess it also depends on how the time savings offsets the additional cost of the jet.
• Is ForeFlight Performance a worthwhile investment for this kind of analysis? Is it the go-to software for this kind of thing? I've played around with Pilatus's range finder before, but it seems somewhat basic and limited, and also doesn't seem to account for things like altitude.
• If the flight in questions is going to Canada, say Vancouver, can an argument be made that a fuel stop is actually advantageous assuming you're able to knock out customs at the same time? From a time standpoint, it saves you from having to do customs in Canada, so it perhaps doesn't add that much overall travel time. And from a dollars standpoint, I believe you would avoid having to pay FET. (Vancouver is in the 250-mile zone.)
In the PC-12 the max takeoff weight is 10450. If you plan on 7200 for the Operating weight (Aircraft, crew of 2, crew bags and catering) and 1500 for the passengers (6 passengers in the Executive configuration and 300 pounds of bags) you will have 1750 left for fuel, which is enough for a flight from KLAX to KJAC with no alternate. So in reality you would want 4-5 passengers at the max. As others have said you may want to look at the PC-24
Doing KLAX-CYYC in the PC-12 you could only take 4 passengers with no alternate and it would be a 4 hour 45 minute flight
I used FltPlan.com (which where I work is what we all use) and from KLAX to KJAC it came up with 2:58 at FL250 needing 1638 fuel (including 45 min reserve and no alternate). We plan on using about 500 pounds per hour for fuel. So yes you can do KLAX to KJAC with 2 pilots and 6 passengers if you don’t need an alternate.
60% of the fuel flow for nearly the same speed, for starters. 200# total baggage for 10 people going to ski country is also just a wee bit short.Interesting, @jayhawk74. At the recommendation of @flyingcheesehead, I decided to trial ForeFlight. I'm attaching what I'm getting for the trip. (Note that I'm using HHR, which is within a few miles of LAX, so shouldn't make a difference.)
According to ForeFlight, 10 people on board should be fine, with 975 lb. of fuel to spare at landing.
Is there anything in the assumptions I'm using that could explain the difference?
Interesting, @jayhawk74. At the recommendation of @flyingcheesehead, I decided to trial ForeFlight. I'm attaching what I'm getting for the trip. (Note that I'm using HHR, which is within a few miles of LAX, so shouldn't make a difference.)
According to ForeFlight, 10 people on board should be fine, with 975 lb. of fuel to spare at landing.
Is there anything in the assumptions I'm using that could explain the difference?
60% of the fuel flow for nearly the same speed, for starters. 200# total baggage for 10 people going to ski country is also just a wee bit short.
I’m not sure how you are coming up with your numbers. Average empty weight of a PC-12 is about 6,600 lbs. you would be way over gross with what you are putting in it.
I’ve flown about 40 different PC-12’s. 6,600 lbs is a pretty solid number.
There is nothing unique about our 32 aircraft. They are all PC-12/47Es in the Executive Configuration. The empty weight that you are finding in Wikipedia and other sites may be the empty weight of the aircraft before seats and other interior items are added. BTW Pilatus is no longer building the PC-12/47E as they are only making the PC=12 NGX so if you are planning on using the PC-12/47E you will have to buy them used.As a further update, I searched around online a bit and Wikipedia lists the PC-12 NG's empty weight as 6,195 lb. and another site lists the PC-12/47's empty weight as 6,040 lb., both even less than the default assumption that ForeFlight uses. I also found an AOPA brochure for the PC-12 NGX that lists the empty weight as 6,173 lb.. (Our aircraft would most likely be the PC-12/47E model.)
@jayhawk74, might there be something unique about the configuration you guys are using?
Thanks, guys. Yeah, it seems like at least part of the difference might be the empty weight and altitude.
Regarding empty weight, ForeFlight's default assumption for the PC-12 is 6,320 lbs.. Add on the 400 lb. total that I'm assuming for two crew members, and that gets you to 6,720 lbs.. (We're not doing any catering.) Still that's a pretty big gap from the 7,200 lb. that @jayhawk74 is saying that he uses. I wonder why that is.
Regarding altitude, I change to 21,000.
Regarding cargo, I changed to 50 lb. per person on board.
This is where it's coming out now...https://d.pr/i/srfyqu. (I kept the empty weight the same.)
Keep in mind that showing up at a mountain destination in winter with minimal fuel is not a good idea.
So you're putting 8 people in a PC-12 without anything to eat or drink for 3 hours, and their ski and bags are being shipped separately. Why are people going to use your services vs taking the airlines?
And you also didn't answer if you are going to get your own 135 or operate under someone else's certificate.
5 bucks says the op doesn’t know he needs a cert. 100 bucks says he isn’t a pilot. 10,000 bucks says if he can’t afford an experienced pilot consultant, he can’t afford a certificate, let alone a PC12.
Meh - I don't mind the spitballing. What the hell else are we all doing while locked up at home anyway?
I still think taking 8 folks 1000+nm on a regular basis is better left to the jets. I used to take 6 or 7 folks in a CJ3 on 1200nm trips pretty regularly, and even then it wasn't great. I say stick to the tried and true small time 135 formula - buy a clapped out 601, put in a new interior, then BS and cheat your way into enough charter volume to stay just barely ahead of your costs.
Got it, @Dave Theisen. Weird that there's so much contradictory information out there on this. Is that 6,600 lbs. with or without crew? If with, what would it be without?
What you're seeing is a few things: "Empty Weight" as listed on a web site is going to be the lightest possible empty weight. Start putting in options and fancy interiors and they're going to weigh more. So, your actual empty weight is going to depend on the airplane. If you look around at the used aircraft for sale sites, occasionally you'll find one listed with its actual empty weight, or you can ask around for more real-world numbers.
Empty Weight does not include crew. Basic Operating Weight, however, does.
So you're putting 8 people in a PC-12 without anything to eat or drink for 3 hours, and their ski and bags are being shipped separately. Why are people going to use your services vs taking the airlines?
And you also didn't answer if you are going to get your own 135 or operate under someone else's certificate.
Just for kicks, now let's look at doing this in a jet instead. Going back to Pilatus and their PC-24, this time the trip takes less than 3 hours. You'd burn about 3400 pounds of fuel and want a reserve of maybe 1150 pounds, you'd have the ability to take the same payload as the King Air while getting there much faster.
For what your talking about you should look at the PC-24
@flyingcheesehead and @jayhawk74, the PC-24 does look pretty ideal, as far as jets ago, with regards to its range and passenger capacity. One issue, though, is that it looks like there are very few of them out in the wild.
Are there any other jets that are comparable in range and passenger capacity, and that also might be cost competitive with turboprops when you factor in time saved? Maybe Citation Vs? (We're very focused on cost per passenger, so six-passenger jets are unlikely to work for us.)
Yeah, Pilatus is kind of the Mattel of the light jet world, unfortunately. They could sell a lot more than they are right now if they'd just crank 'em out faster.
The competition in the same class consists mainly of the Cessna Citation CJ4 and the Embraer Phenom 300. The latter is (one of?) the best-selling jets out there right now, it's got a great balance of price and utility.
Good stuff, @flyingcheesehead. It looks like both have a configuration where you can do eight passengers and two pilots without having to stick someone in the lavatory?
Is the Learjet 45 in this class, too? How about some of the older Cessna models?
Well, kinda, maybe. The three mentioned so far (PC24, CJ4, Phenom 300) are all single-pilot certified. No Lears are... And the 45 is out of production now. But if you're looking for older jets, there are probably a number of different options. It all depends on what you're trying to hit for operating costs vs. speed vs. payload and the balance you're looking to strike.
Wikipedia has a good breakdown of all of the Citations, current and older: https://en.wikipedia.org/wiki/Cessna_Citation_family
Yeah, older is fine, especially as I'm chartering, so this isn't an asset that I'm acquiring or holding onto. Main focus is on cost, capacity, range, and availability...