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IAS SPEED HOLD NOT WORKING?

Printed From: Just Flight Forum
Category: Just Flight Products
Forum Name: 146 Jetliner
Forum Description: Discussion area for 146 Jetliner
URL: http://forum.justflight.com/forum_posts.asp?TID=19712
Printed Date: 16 Apr 2024 at 5:39am


Topic: IAS SPEED HOLD NOT WORKING?
Posted By: aca882k9
Subject: IAS SPEED HOLD NOT WORKING?
Date Posted: 17 Aug 2012 at 10:30pm
So I select the IAS BUG to 250 for example, select altitude, and engage IAS. Plane levels off correct altitude yet the speed does not maintain 250 selected when IAS engaged.

Is this a error bug? Or am i doing something wrong.. and yes, i red the manual =/
 
Please help!
 
Is the avro ment to be controlled manually? (thorttles)


Replies:
Posted By: gmac
Date Posted: 17 Aug 2012 at 11:14pm
No auto throttle on the 146.....have to set power using the throttle.  Good description from page 45:
Now press the ALT ARM button followed by the IAS button. The autopilot will now vary
the vertical speed in the climb to 27,000ft to hold 230 knots. Do not confuse this with the
auto-throttle or VNAV systems on board modern airliners. The autopilot will not alter the
throttle position; it will simply alter the aircraft pitch to maintain 230 knots at the current
throttle position. For this reason, throughout the climb, you must monitor both your
airspeed and throttle position (or N1 engine instruments).

Posted By: aca882k9
Date Posted: 17 Aug 2012 at 11:43pm
Originally posted by gmac gmac wrote:

No auto throttle on the 146.....have to set power using the throttle.  Good description from page 45:
Now press the ALT ARM button followed by the IAS button. The autopilot will now vary
the vertical speed in the climb to 27,000ft to hold 230 knots. Do not confuse this with the
auto-throttle or VNAV systems on board modern airliners. The autopilot will not alter the
throttle position; it will simply alter the aircraft pitch to maintain 230 knots at the current
throttle position. For this reason, throughout the climb, you must monitor both your
airspeed and throttle position (or N1 engine instruments).
 
ah ok. well i guess it wont be so bad to control thorttles manually.. another question, during dusk/night the vc lights are not illuminated.. i guess this requires fix corect?

Posted By: gmac
Date Posted: 18 Aug 2012 at 12:35am
There are buttons on the overhead that will brighten up panel.
Panel flood....top right corner of overhead; flood light for main panel
Dim glare shiel......bottom left corner of overhead; turns on panel backlighting
Dim instruments.......bottom right corner of overhead; on/off of gauge backlighting
Dim panel.......bottom right corner of overhead; turns on/off cockpit flood lights

Gmac


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