[bvipilots] Re: citation x stalling out at high altitudes

  • From: Robert Cezar <robert@xxxxxxxxxxxxxxx>
  • To: bvipilots@xxxxxxxxxxxxx
  • Date: Fri, 9 Aug 2013 03:00:05 -0700

BTW Jason...

Here's the Cessna link:

http://www.cessna.com/citation/longitude

r -:)

On Fri, Aug 9, 2013 at 2:59 AM, Robert Cezar <robert@xxxxxxxxxxxxxxx> wrote:

> Hi Jason,
>
> If you look in the section entitled Jet Air Speeds in the Flight Deck Doc,
> you'll see that Michelle maintains a mach speed that is 11% below the
> barber pole. This is necessary to guard against sudden tail winds that
> would drive the aircraft into an over speed condition. Even at a reduced
> speed of 11% below the barber pole, there are times when Michelle still
> needs to deploy the speed brakes (spoilers) to reduce over speed
> conditions. The FAA certification of FL 500 is conducted by test-pilots
> under pristine conditions, perfect weather and precise fuel and payload
> weight conditions, This is ABSOLUTELY NOT the aircraft's nominal flight
> level.
>
> With that as a backdrop, you can then understand that as you attempt to
> reach FL 500, without the ability to go maximum speed, the plane will
> stall. This is why Cessna writes the following in their brochures...
>
> START OF QUOTE
>
> *Cessna’s entry into the super midsize jet category is going straight to
> the top. With a 4,000 nm range, a Mach .86 cruising speed, and a
> 45,000-foot maximum cruising altitude, the Citation Longitude delivers far
> more performance than other midsize jets far more efficiently. Performance
> is not the only bar-raising characteristic of the Longitude. It also sets a
> new standard in private business travel for cabin efficiency, technology,
> luxury, and comfort.*
>
> END OF QUOTE
>
> Please consider the maximum flight level for this aircraft to be FL450...
> and even that is pressing it.
>
> Also, please keep in mind that Michelle cannot auto-land this aircraft
> because the FSX flight dynamics are completely unrealistic!
>
> Regards,
> Robert
>
>
>
>
> On Thu, Aug 8, 2013 at 5:38 PM, Jason Fayre <jfayre@xxxxxxxxx> wrote:
>
>> Hi,
>> I just tried my first flight with the citation x.  My flight was from
>> Toronto to Boston.  My cruise altitude was flight level 500.
>> Everything whent fine until I hit around flight level 490.  After that,
>> my airspeed dropped dramatically and I stalled.  My altitude then began
>> wildly fluctuating up and down.  My airspeed was between 70 and 150 Knots,
>> which is much too low.  Can anyone give me any idea what happened?  This
>> aircraft is supposed to be able to fly this high.  I did all the checklists
>> and performed fuel loading operations.
>> I should also say that my speed began dropping slowly after I hit around
>> fl400.
>>
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>
>
>
> --
>
>
> AOPA Member No: 06936977
>
>


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AOPA Member No: 06936977

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