richjb2

16 hours ago, oneleg said:

I actually have another question about the Learjet 25D.  I've been trying it out and finding it to be a very difficult aircraft to land.  It drops like a rock at speeds less than 140 kts, but the craft has to be kept at 70% RPM otherwise there's danger of stalling. Lots of complaints and noise too at low speeds eg.  don't sink, don't sink, etc...

For a very fast jet such as the Learjet (actually a derivative of a fighter jet) how does a typical pattern go?   At what height and speeds should I be in on crosswind, downwind, and base legs? For GA prop planes generally the altitude is 1000 ft on the downwind leg but I'm having second thoughts about that when on the jet.

In the 1980's after a series of incidents and accident, Gates Learjet (Gate Tire and Rubber owned the Learjet brand at that time) published what was known as the "White Book" for the Lear 20s. the "Gold Book" for the Lear 35/36, and the "Blue Book" for the Lear 55.  These were the bibles for flying the Learjet airplanes. Many of the "old wives tales" for flying the Learjets were clarified or replaced by procedures contained within these manuals.  As an instructor with FlightSafety, we issued these books to each client who attended both initial and recurrent training, and we taught from them.  The ROPAT in the Lear 45, 75, and Challenger 300/350s are direct descendants of these manuals. 

Below are excerpts from the Learjet 20 series White Book on the VFR pattern, recommended airspeeds, and landing technique. 

I've moved to MSFS and XP12.  I am eagerly awaiting the MSFS version of Xtreme Prototypes' Lear 25D and the new 28. 

Rich Boll

Wichita, KS 

16 hours ago, oneleg said:

Thanks. Any idea what the limit might be is for the Learjet 25D? I'm not seeing it in its 320+ page manual.

For what it's worth it's on sale at 40% off (looks like it's on sale for the first time ever: XP GLJ Model 25 SE v3.0 | Xtreme Prototypes).

In the Learjet, the spoilers do not have a maximum speed for deployment.  They simply not fully deploy above a certain speed due to air loads on panels.  I am not aware of any jet that has a maximum speed for spoiler deployment; however, I not going out on a limb and say that none do.  There's always an exception out there that I may not be aware of. 

Again, the all the Learjets there is an AFM limitation against using reverse to back up the airplane.  There are two reasons.  First, FOD ingestion.  Second, some of the Learjets tend to be a tail heavy airplane, especially with fuel in the trunk.  If you are reversing the airplane using thrust reversers, it's easy to set the airplane on its butt.  I was in a hangar one day when, due to maintenance, the airplane suddenly sat on its tail with a loud "bang".  It's not pretty. 

Rich Boll

16 hours ago, mrzippy said:

For Learjets:

 

WARNING: Do not extend the spoilers, or operate with spoilers deployed, at speeds above VMO/MMO [sic] due to the significant nose down pitching moment associated with spoiler deployment.

Only for the original Learjets:  20s, 35/36, 31/31A, and 60.  With the Lear 45 and 75, the spoiler panels were moved further out on the wing and no longer blanket the horizontal stabilizer.  Spoilers are to be used with an VMO/MMO exceedance per the AFM and QRH procedures. 

Rich Boll

I just loaded Windows 7 32 bit on my computer. I can't get Config Mgr to run. I receive the 429 error. Will the step below allow me to run Config Mgr?

Thanks,

Rich Boll