16 Dec 2025, 10:03 [ UTC - 5; DST ]
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 14:12 |
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Joined: 08/05/11 Posts: 5248 Post Likes: +2426
Aircraft: BE-55
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Username Protected wrote: FL370 takes a while and shallow climbs in the Citation are best. 200kts indicated until FL200 and then 185kts indicated. If you try to do more than that up high you can get caught plowing through the air and having to descend. That's not been my experience.. I can get mine to climb at max climb rate per the Cessna AFM and the aircraft does just fine and close to book performance and fuel burn numbers.
Different temps?
_________________ “ Embrace the Suck”
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 14:15 |
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Joined: 08/03/10 Posts: 1561 Post Likes: +1810 Company: D&M Leasing Houston Location: Katy, TX (KTME)
Aircraft: CitationV/C180
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Username Protected wrote: FL370 takes a while and shallow climbs in the Citation are best. 200kts indicated until FL200 and then 185kts indicated. If you try to do more than that up high you can get caught plowing through the air and having to descend. That's not been my experience.. I can get mine to climb at max climb rate per the Cessna AFM and the aircraft does just fine and close to book performance and fuel burn numbers.
interesting. mind sharing your climb profile numbers and technique?
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 14:38 |
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Joined: 08/03/10 Posts: 1561 Post Likes: +1810 Company: D&M Leasing Houston Location: Katy, TX (KTME)
Aircraft: CitationV/C180
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Username Protected wrote: Different temps? that maybe it. -40C was the lowest i saw at FL370. Book says -56C for max climb rate numbers.
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 17:35 |
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Joined: 09/04/10 Posts: 3544 Post Likes: +3251
Aircraft: C55, PC-12
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Username Protected wrote:
In the Phenom 100 its FLC 200K until ~28-30K depending on the ISA and about the same time as IAS flips to Mach 0.55. Then I move to VS climb at 1000fpm and monitor IAS; FLC starts to hunt too much. By the time you get to FL370 Mach 0.55 is about 185K so not much different than your method.
I've heard of some people getting bit by the VS in the climb. They get distracted, etc. One of the adopted SOPs from the CJP safety foundation is to not use VS in the climb. I know you are monitoring - so not an issue for you - but it can be an issue for others... -Jason
I use VS up high as well and for the same reason - FLC hunts too much. I was there at CJP when they talked about why not to do this and I went back and tried it a couple of other ways and couldn't find anything better than VS. In general when I do this, I set a VS that won't bite me if I forget to monitor it. I use 3.5 degrees on my AOA as my "game on" indicator. Once I hit that (in the climb) it tends to move much faster. I won't go up at a steeper angle than that unless I need to get max range, it is slow to accelerate once AOA is greater than 3.5.
_________________ John Lockhart Phoenix, AZ Ridgway, CO
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 17:42 |
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Joined: 09/04/10 Posts: 3544 Post Likes: +3251
Aircraft: C55, PC-12
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Username Protected wrote: Glad you are enjoying it! What was your total fuel burn for each leg? 3100 lbs
I ran the numbers on that same leg in the CJ2 @FL410 (I doubt it'd get to FL450 at those temps) and it showed 2600#. Burning an extra 500# in the 501 seems is a great deal given the huge difference in cap cost. Plus you didn't have to pay for engine & parts program!
_________________ John Lockhart Phoenix, AZ Ridgway, CO
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 21:02 |
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Joined: 07/29/08 Posts: 194 Post Likes: +17 Location: Redmond, WA
Aircraft: Citation 501
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Username Protected wrote: Burning an extra 500# in the 501 seems is a great deal given the huge difference in cap cost. Plus you didn't have to pay for engine & parts program! Don't know how happy I am about not having an engine program. Every time I fly, I think about whether the flight is going to end with a 100K bill for some random engine issue..
_________________ Sameer KBFI Citation 501
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 21:35 |
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Joined: 11/24/11 Posts: 663 Post Likes: +707
Aircraft: PA31, PA32R
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Username Protected wrote: Burning an extra 500# in the 501 seems is a great deal given the huge difference in cap cost. Plus you didn't have to pay for engine & parts program! Don't know how happy I am about not having an engine program. Every time I fly, I think about whether the flight is going to end with a 100K bill for some random engine issue..
Sure, but you could have a baker’s dozen 100k issues before you paid the difference on a CJ2, right?
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Post subject: Re: Citation 501sp Posted: 23 Jul 2019, 23:55 |
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Joined: 05/05/09 Posts: 5314 Post Likes: +5301
Aircraft: C501, R66, A36
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Username Protected wrote: 1100 miles plus yesterday in the 501sp twice! Not much wind either way. FL370 takes a while and shallow climbs in the Citation are best. 200kts indicated until FL200 and then 185kts indicated. If you try to do more than that up high you can get caught plowing through the air and having to descend. A few minor bugs but nothing major. Reasonably fast and super quiet and comfortable. 800lbs/hour in cruise at about 335knots. Easy and fun to fly. Highly recommend. Another happy customer from Mike's Gently Used Citations. I usually use 160kts to climb as I like to rip up to the thinner air more quickly. I have a document on how to hyper-mile the Citation 501; it claims you can stretch 1,500 miles at MCT with this graph using the AOA to pick speeds and altitudes on the ascent. I'll try to find it. I haven't been into the deep plow but you can run all your passengers into the tail to unload the stab if this ever happens and you don't want to descend (kinda joking but it works in a pinch). Glad you're having fun James, who's next?
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Post subject: Re: Citation 501sp Posted: 24 Jul 2019, 08:47 |
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Joined: 08/05/11 Posts: 5248 Post Likes: +2426
Aircraft: BE-55
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Username Protected wrote: I ran the numbers on that same leg in the CJ2 @FL410 (I doubt it'd get to FL450 at those temps) and it showed 2600#. Burning an extra 500# in the 501 seems is a great deal given the huge difference in cap cost. Plus you didn't have to pay for engine & parts program!
3100#, 1100nm, would pretty much be a VFR reserve right for the 501? So John how much fuel would you have left? and what approx would be your TAS? Just curious. The 501 would probably be hard to beat for entry level and low cap cost.
_________________ “ Embrace the Suck”
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Post subject: Re: Citation 501sp Posted: 24 Jul 2019, 10:55 |
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Joined: 07/29/08 Posts: 194 Post Likes: +17 Location: Redmond, WA
Aircraft: Citation 501
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Username Protected wrote: 3100#, 1100nm, would pretty much be a VFR reserve right for the 501?
700# remaining is technically an IFR reserve, but no real ability to get to an alternate where weather would be significantly different. I would be comfortable with 700# when the destination is severe VMC and there are a couple of alternate airports with long enough runways within 20 miles. More typically, I like to have 1000#. IMO in hard IMC with a distant (realistic) alternate, the no-wind range is closer to 800 nm.
_________________ Sameer KBFI Citation 501
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Post subject: Re: Citation 501sp Posted: 24 Jul 2019, 11:39 |
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Joined: 09/04/10 Posts: 3544 Post Likes: +3251
Aircraft: C55, PC-12
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Username Protected wrote: I ran the numbers on that same leg in the CJ2 @FL410 (I doubt it'd get to FL450 at those temps) and it showed 2600#. Burning an extra 500# in the 501 seems is a great deal given the huge difference in cap cost. Plus you didn't have to pay for engine & parts program!
3100#, 1100nm, would pretty much be a VFR reserve right for the 501? So John how much fuel would you have left? and what approx would be your TAS? Just curious. The 501 would probably be hard to beat for entry level and low cap cost.
I'd have 1400. TAS would be 395-400. If the flight was longer, I'd take it up to 450 - depending on when I went up, it'd "make" another 200# of fuel ("make" means that it'd show more reserve fuel on the performance page). I can go 1400NM (no wind) and land with 800#.
_________________ John Lockhart Phoenix, AZ Ridgway, CO
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Post subject: Re: Citation 501sp Posted: 24 Jul 2019, 11:51 |
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Joined: 07/29/08 Posts: 194 Post Likes: +17 Location: Redmond, WA
Aircraft: Citation 501
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Username Protected wrote: Sure, but you could have a baker’s dozen 100k issues before you paid the difference on a CJ2, right? Yes, but couple of issues: a) CJ2 with an engine program will retain its value as long as its on the program. I will need to pay the scrap yard to take mine  , b) A CJ2 can be financed, a 100K engine bill cannot be (reasonably).
_________________ Sameer KBFI Citation 501
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