Gentlemen,

 

I recently acquired the King Air, and I find it all good, except for one little issue. Every time I put the plane into cruise flight, and bring back the power a bit, my annunciator panel lights and other warning lights all switch on, my EFIS switch off, and I have to turn that back on and reset the annunciator panel, BUT my engines and general flight components all work!

 

Anyone experienced this, or better yet, found a sollution. It could be that I am doing something wrong too of course. I did ask Carenado, sent them a screenie to, but it seems like it is not a known issue in the plane, a rarity, which is good, but I still need to find out where I am going wrong or if anyone else has this problem.

 

Many thanks in advance!

Every time I put the plane into cruise flight

 

Can you clarify what you mean by cruise flight?

Thanks for the reply! When reaching e.g. 20000 feet, the plane levels out, I reduce power to about 96 percent, 1900 RPM and then the everything goes bonkers!

 

Thanks!

I am guessing you are tripping the Master Caution. You appear to be too high on both power and RPM at that altitude, but that depends on outside temperature. Was your airspeed indicator on the red and white striped barber pole? I recommend you follow the link in another topic here and spend the $5.00 for a PDF copy of the Beech C90B Pilot Operating Handbook (POH). It contains performance charts that show suggested torque and fuel flow settings at 2,000 ft increments. Since reviewing the charts in the manual I fly based on fuel flow and torque. The torque readout is easy to see on the gauges. To see your accurate fuel flow just point your mouse pointer at the fuel flow gauges and you will get a pop-up to read. Here is the link to the previous topic, where you can find the link to the download site for the POH. The link is in the last message in the topic.

 

http://forum.avsim.n...ance-in-flight/

 

There are several charts ranging from -20C to +30C temperature at 10,000 MSL. For example, the chart for 0^C at 10,000 references +19^C at 0 feet of elevation. That is about 66^F at sea level. I took off from Easton, Md today, near sea level, with a temperature on the ground of around 75^F. i.e. a bit higher than the chart I referenced but lower than the next chart, which is based on +10^C at 10,000 and around 85^F at 0 MSL. I climbed and leveled off at 22,000 without using the autopilot. I adjusted my fuel flow to around 240 per engine, and adjusted torque to around 1020. That produced a power setting in the mid-93 range and RPM was indicating at around 1650. My IAS was just a comfortable distance below the barber pole.

Thank you sir, will certainly look into it. I just bought the manual as you suggested it. I'm quite keen to have a look at how it is done! As a matter of interest, I notice that the engines can be set e.g. at 96% for climb, but it will stay there during the climb without having to be maintained by adding more power.

 

Now, I have a lot of experience operating turbines and that just doesn't seem right! It should loose power as you climb. However, that being said, I don't have much experience in the way of turboprops, so I might be totally wrong here.

 

Many thanks!

I hope that will be the solution to the issue you experienced. It is a question not merely of engine power but instead a question of pull. You do that by adjusting the torque (i.e. prop pitch). If you review the tables in the POH you will see that you should adjust prop pitch to maintain torque of 1315 until around 15,000 ft (IAT dependent). Then drop off from there. There is a good discussion in another topic here at the link I provide below. Just work your way through the "sociology" issues in that thread to find the good information that is in there. You will see what I mean by that as you go through it.

 

http://forum.avsim.net/topic/369634-prop-levers-simulated/

Thanks so much for taking the time to help me through the pittfalls sir! I really appreciate all of it!

 

Kind regards

Did you get a chance yet to climb to 20 and level to see if that was the issue?

Not as yet, I am actually printing the manual out now so I can have everything with me before I do so. As soon as I have done it, I will let you know what happens.

 

Kind regards

Thanks for the help, following those table and doing the right calcs seemed to have done the trick!

 

Kind regards.

This has happened to me but only happens when i cross a time zone line.

 

For example leaving New York and Flying west, as soon as the clocks roll back for central time it happens.

 

It obviously is a bug.

 

i took a pic of it... I will post later on..

Humm! Crossing time zones I have logged flights in the C90B from Orange County, CA (KSNA) to Denver Centennial (KAPA) (Pacific time zone to Mountain time); from KAPA to Chicago Midway (KMDW) (Mountain to Central); and from Easton, Md (KESN) to KMDW (Eastern to Central); and never had that happen. Interested to see what Werner747 says about this as he reported his incident occurred when he attempted to level off at cruise altitude.

Gentlemen,

 

After getting myself that POH and following the flight regimes indicated and by using the proper power settings, I have not been able to duplicate this issue,so I doubt it has anything to do with this crossing time zone theory. I also fly in the US frequently and crossed a few time zones in that time and I don't seem to be able to connect it to that.

 

Regards

Great! Ahhhh! Life is good when you have Avsim within reach!