Skip to content
View in the app

A better way to browse. Learn more.

The AVSIM Community

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

High pressures/altitude problems

Featured Replies

Once again it looks like RC4 is having problems with high pressures and altitudes. Today's flight from KDAL to KMCI had a pressure of 30.45 when under 18,000 feet. RC has a tendency to bark at me when I level off at the assigned altitude because it thinks I'm at a much higher than I really am (If I could figure out what it THINKS I'm at, I could compensate.. but it never tells you what altitude you're at.. only what you should be at). I thought this was a problem that only seemed to plague the Maddog 2010, but now it's happening with the PMDG 737-700, so I'm pretty sure it's not the plane.What cracks me up is no one else seems to ever have this problem but me.. and it's so sporadic it only happens when a front has moved through and I use REX or ASE as my WX generator. Rather than listen to ATC complain at me, i usually just shut RC4 down and fly on my own when this happens.

First, did RC ATC issue that pressure to you? If, so, when. RC should be issuing altimeter pressure along your route.Some issues were resolved with ASE service packs and modifications to FSUIPC. Be sure you use the current version here:http://forum.simflight.com/topic/66139-updated-modules/Are you using real world weather? If try using archived weather for the time of your flight. The archive can be printed out for your route within ASE so you can get a sense of the pressure along your route.I am not familiar with REX weather ops.

  • Commercial Member

there is a section in the manual, that deals with altitudes and fligt levels. 12000 is not FL120, 18000 is not FL180if you hear FLnnn, the altimeter needs to be set to the standard pressure. don't use the lazy man's "B" key, it doesn't work rightif you nnnnn FT, the altimter needs to be set to the local pressure, which the controller gives you when you transition from flight levels to altitudes, and vice versa.www.jdtllc.com/v4/rcv43.pdfjd

  • Author

Got it. I'll try those and see what happens.

. . . and don't use the 'B' key to set altimeter pressure. It is hard coded to a transition altitude of 18,000 feet in FS which is incorrect outside of FAA and many other areas. The transition altitude for your airports can be seen in the controller page of RC preflight.RC retrieves the surface pressure as written to FS by your weather application and the controller announces it when as necessary when operating below the transition altitude or changing to an altitude below it. For ATIS however that pressure when using ASE in FSX with the ASE service packs installed and using current FSUIPC4 versions will read destination ATIS from the ASE reported METAR to get around the problem of ASE implementing Global Weather Mode (the whole FS universe has the same weather as your nearest surface reporting station to your current aircraft position) implemented with DWC required. In addition deep frontal passage and the fifteen minute delays in reporting real world weather have caused problems for some users. That is why I recommend using the ASE archived weather for the Z time of your departure. ASE will dynamically modify the weather along your route approaching the forecast pressure as you near destination. In addition printing out the ASE navlog created by loading your plan into it gives out lots of useful information such as some METARS and winds/temperatures aloft along your route as major reporting stations. I use AS65 but I believe these reports are in ASE as well.

Hi,I flew last night in the USA with pressure reported as 3040 and the PMDG NGX behaved without any problems.The pressure reading on departure was 3043 and it was to remain high for some time.My climb up to 38000 was completed without RC nagging at me at all.When you reach transition level how do you set standard pressure? Do you press the knob for standard or are you doing it some other way?Norman

Norman Bowman

On the B737 panel you press the standard button to toggle between pilot entered and standard altimeter pressures. I think in the FS9 version you have to drag and click left or right to select BARO or STD. I use the PMDG B737NG models in FS9.It is also convenient when in standard mode you can dial in your expected pressure for arrival and you should not have to change it much when RC announces pressure preceding your descent below transition level.I don't think that button affects your steam gauge standby altimeter, something I never noticed :)

One other note about the 737NG altimeter operation. Underneath the altimeter altitude reading on the right side of the PFD it always shows the setting entered with the baro knob. It will not switch there to standard pressure but I think changes color but the numbers always read from the pilot setting. On top of the altitude readout on the PFD I think "STD" lights up when you switch the altimeter to STD mode.If you don't check for the STD readout you may be on standard pressure when you think you are on QNH due to the QNH reading not changing.I might be incorrect on the placement of the STD indicator but it is above or below the altitude readout in the PFD.

Create an account or sign in to comment

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.