CAPTAIN SIM FORUM
757 Captain III >> 757 Captain III - Bug Tracking >> SYSTEMS & DYNAMICS
https://www.captainsim.org/forum/csf.pl?num=1576518392

Message started by Captain Sim on Dec 16th, 2019 at 5:46pm

Title: SYSTEMS & DYNAMICS
Post by Captain Sim on Dec 16th, 2019 at 5:46pm
1. Please make sure you are on the latest version

2. PLEASE READ BEFORE POSTING

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on Dec 17th, 2019 at 5:44pm
(In FSX 1.5)

When holding at a waypoint, the altitude constraint is displayed as a flight level when below the transition level.

Image shows hold at DAYNE, with a constraint of 8000ft, and transition level FL90, but LEGS page and HOLD page show DAYNE at FL80.
flight_level.JPG ( 124 KB | 50 Downloads )

Title: Flight director
Post by trevors on Dec 18th, 2019 at 4:12pm
This issue has been raised a few times but CS have chosen to sweep it under the carpet.
Please re-consider.
The FD at TO should give guidance for an 8 degree pitch up.
Immediately after TO, it then gives guidance for a speed of V2+15 to V2+25.

FIXED:
FSX
P3D4

I have attached "evidence" from a "Boeing" manual.
FD_757.jpg (Attachment deleted)

Title: Re: SYSTEMS & DYNAMICS
Post by musiol1 on Dec 18th, 2019 at 5:16pm
+1

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Dec 19th, 2019 at 12:19pm
Speedbrake are way too effective
on Boeing 757/767 FCTM, Chapter4"Climb,Cruise,Descent and Holding" - Decent Rates-typical rate of decent Table, the 752 would have -1800fpm for 290kts and -1500fpm for 250kts idle clean descent, which CS757 matches very well
But, for descent rate with speedbrake, the number on manual is -2700 and -2000fpm, in the CS757, it gives me something like -4500 and -3500, which it way too fast.

Title: Re: Flight director
Post by trevors on Dec 20th, 2019 at 6:50am

trevors wrote on Dec 18th, 2019 at 4:12pm:
This issue has been raised a few times but CS have chosen to sweep it under the carpet.
Please re-consider.
The FD at TO should give guidance for an 8 degree pitch up.
Immediately after TO, it then gives guidance for a speed of V2+15 to V2+25.

FIXED:


Thank you.




Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on Dec 20th, 2019 at 8:41pm
THRUST REQUIRED FMC Message when speed drops below target in VNAV without A/T

From Manual (Part 2, Page 498):

"(FMC ALERTING MESSAGES:)

THRUST REQUIRED - VNAV active, autothrottle disconnected, and additional
thrust required to track VNAV descent path and maintain speed."

SW

Title: Re: SYSTEMS & DYNAMICS
Post by aburek on Dec 20th, 2019 at 9:23pm
Any updates on the utility bus and autoland annunciator fixes that were supposed to be in v 1.4?  They still are not working.

Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Dec 22nd, 2019 at 4:52pm

CaptLE wrote on Dec 17th, 2019 at 5:44pm:
(In FSX 1.5)

When holding at a waypoint, the altitude constraint is displayed as a flight level when below the transition level.

Image shows hold at DAYNE, with a constraint of 8000ft, and transition level FL90, but LEGS page and HOLD page show DAYNE at FL80.



Shouldn't that be FL080 and NOT FL80 ?

Title: Re: SYSTEMS & DYNAMICS
Post by EY on Dec 23rd, 2019 at 5:05pm
Yes, should be FL080. Next upd.

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Dec 28th, 2019 at 4:18pm
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Dec 28th, 2019 at 4:21pm

aburek wrote on Dec 20th, 2019 at 9:23pm:
They still are not working.

https://www.captainsim.org/forum/csf.pl?num=1533652095

Title: Re: SYSTEMS & DYNAMICS
Post by aburek on Dec 30th, 2019 at 3:51am
Not sure what that reference link means.  I satisfied all those requirements in previous posts and didn’t get any response.  Perhaps a little more detail on what you need would be more helpful to everyone? 

This is in reference to 2 items that worked in previous versions and don’t work now.  Not new items. 

Hopefully it doesn’t take 3 months to get a response on this.

Thanks.

Allan

Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Jan 1st, 2020 at 6:55pm
Regarding the FD directly after lift-off:

It should be giving guidance for V2+15 to V2 + 25.
It is actually giving guidance for a higher speed : V2 + 30 or more. Please check this.

Screenshot of these "V2 + 30 or more" pls.

Title: Re: SYSTEMS & DYNAMICS
Post by aburek on Jan 9th, 2020 at 3:06pm

Captain Sim wrote on Dec 28th, 2019 at 4:21pm:

aburek wrote on Dec 20th, 2019 at 9:23pm:
They still are not working.

https://www.captainsim.org/forum/csf.pl?num=1533652095


If it is references that they do not (or at one time did work) please refer to the release notes for update 1.4:

VERSION 1.4 (31MAY’19)
BASE PACK

Fixed:
– NO AUTOLAND should not be displayed on the Autoland Status Annunciator once the IRSs have aligned.
Removed from the changelog. Quotes from our web site is not a reference material. Proper reference sources are: https://www.captainsim.org/forum/csf.pl?num=1533652095


Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Jan 11th, 2020 at 3:40pm
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on Jan 22nd, 2020 at 2:32pm

CaptLE wrote on Dec 20th, 2019 at 8:41pm:
THRUST REQUIRED FMC Message

Yes, working in 1.502, thanks!

Title: Re: SYSTEMS & DYNAMICS
Post by Av8ter on Jan 30th, 2020 at 2:13pm
Is it known or any fix for the VNAV descent, it disregards any set speed descent, dives for an altitude and allows itself to overspeed. At least a few times descending it also decides at level off to disengage VNAV....

AIIR#6

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Feb 11th, 2020 at 8:37am
Flaps/Slats won't move with engines off.
Today I fly into a snowing airport, as cold weather procedures, I set flaps 20 after landing, and taxi into gate, power on APU and shutdown, let ground crew check the flaps then retract to 0, while all my Hydualic EMDPs are running and pressures are in R hyd system, the flaps won't move (not even slowlly). Then I tried ALTN Flaps which use elec motor, but it doesn't work either.

AIIR#4

Title: Re: SYSTEMS & DYNAMICS
Post by tommchowat on Mar 10th, 2020 at 4:21pm
Hi Guys.

FD takeoff indications still not working for me, PW plane, version 1.503.

KATL RWY 27R M20 intersection
Wind 230/3
Temp 14
Altimeter 3022

FMC data:

Flaps 5
51C assumed temperature
Speeds 136, 136, 145
TOW 186.8 lbs

145 set in MCP
FMA on Takeoff: EPR | TO | TO | FD

Flight director still commanded a stupid pitch attitude of about 8 degrees, I had to manually pitch to around 16-17 degrees to keep around 160 knots. Engaged VNAV at 1000 AAL and commands became sensible again.

AIIR#6

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Mar 28th, 2020 at 3:13pm
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Apr 12th, 2020 at 4:03pm

Angel of Attack wrote on Feb 11th, 2020 at 8:37am:

Today I fly into a snowing airport, as cold weather procedures, I set flaps 20 after landing, and taxi into gate, power on APU and shutdown, let ground crew check the flaps then retract to 0, while all my Hydualic EMDPs are running and pressures are in R hyd system, the flaps won't move (not even slowlly). Then I tried ALTN Flaps which use elec motor, but it doesn't work either.

AIIR#4

I just find I worte it worng as R system, Flaps and slats should be opreate by L system
whatever, it won't move (or it only move less than 5 unit before it stops) if both engines are off and ALL EMDPs are on.
On CS757 manual II p517~518 says EMDP on Left hyd can provide power to Flaps/slats

Also on page 222 shows ALTERNATE OPREATION will be done by Electirc motors, but it won't works too with engines off and APU or GPU in.

As soon as any engine is turnning, like by starters, not even started and running, both normal and altn opreation will work, while the hyd pressure shown on STATUS page has not changed.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Apr 18th, 2020 at 7:54am
EPR command/actual misalign on RR
Just got the RR version, it seems to me, at least on RR535E4 version. the commanded EPR and actual EPR are not aligned after engine stablized (CS FCOM 3 p.151 7.Command Thrust level). it offset by some whether command by AT or manually.

I just bought RR version, and my install sequence was Base1500, HF1503(long done), then RR1500, HF1503.
Prepar3D_2020-04-18_15-46-14-48.jpg ( 311 KB | 36 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by Alex T on Apr 22nd, 2020 at 3:55pm

Angel of Attack wrote on Apr 12th, 2020 at 4:03pm:

Angel of Attack wrote on Feb 11th, 2020 at 8:37am:

Today I fly into a snowing airport, as cold weather procedures, I set flaps 20 after landing, and taxi into gate, power on APU and shutdown, let ground crew check the flaps then retract to 0, while all my Hydualic EMDPs are running and pressures are in R hyd system, the flaps won't move (not even slowlly). Then I tried ALTN Flaps which use elec motor, but it doesn't work either.

AIIR#4

I just find I worte it worng as R system, Flaps and slats should be opreate by L system
whatever, it won't move (or it only move less than 5 unit before it stops) if both engines are off and ALL EMDPs are on.
On CS757 manual II p517~518 says EMDP on Left hyd can provide power to Flaps/slats

Also on page 222 shows ALTERNATE OPREATION will be done by Electirc motors, but it won't works too with engines off and APU or GPU in.

As soon as any engine is turnning, like by starters, not even started and running, both normal and altn opreation will work, while the hyd pressure shown on STATUS page has not changed.


Actually an easy fix for this.. so the issue is CS tied the flap animation to the normal P3D/FSX way of them moving. So as far as P3D calculates it, you don’t have actual hydraulic pressure unless an engine is running. I modified the [flaps.x] section on the aircraft.cfg.
I changed the system type from type=1 (hydraulic) to type=0 (electric).

Of course this sounds wrong, but it’s actually right as far as modeling goes! Now, my flaps don’t move at all unless the proper hydraulic system is powered. If the engines are off and the HYD system is powered, the flaps will move, if the engines are on and the HYD system is off, they won’t move. Just like in real life.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Apr 30th, 2020 at 2:48pm

Alex T wrote on Apr 22nd, 2020 at 3:55pm:

Actually an easy fix for this.. so the issue is CS tied the flap animation to the normal P3D/FSX way of them moving. So as far as P3D calculates it, you don’t have actual hydraulic pressure unless an engine is running. I modified the [flaps.x] section on the aircraft.cfg.
I changed the system type from type=1 (hydraulic) to type=0 (electric).

Of course this sounds wrong, but it’s actually right as far as modeling goes! Now, my flaps don’t move at all unless the proper hydraulic system is powered. If the engines are off and the HYD system is powered, the flaps will move, if the engines are on and the HYD system is off, they won’t move. Just like in real life.

That actually work under any possible condition I could came up with thanks a lot! :D

Title: Re: SYSTEMS & DYNAMICS
Post by Alex T on Apr 30th, 2020 at 3:21pm

Angel of Attack wrote on Apr 30th, 2020 at 2:48pm:

Alex T wrote on Apr 22nd, 2020 at 3:55pm:

Actually an easy fix for this.. so the issue is CS tied the flap animation to the normal P3D/FSX way of them moving. So as far as P3D calculates it, you don’t have actual hydraulic pressure unless an engine is running. I modified the [flaps.x] section on the aircraft.cfg.
I changed the system type from type=1 (hydraulic) to type=0 (electric).

Of course this sounds wrong, but it’s actually right as far as modeling goes! Now, my flaps don’t move at all unless the proper hydraulic system is powered. If the engines are off and the HYD system is powered, the flaps will move, if the engines are on and the HYD system is off, they won’t move. Just like in real life.

That actually work under any possible condition I could came up with thanks a lot! :D


Yes! (hey CS You can steal my fix permanently for the 757/767 it's been tested extensively and ALWAYS works)  :P Even when using alternate flaps

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on May 2nd, 2020 at 2:16pm
[FSX 1.503]

"AUTOPILOT" annunciation with light, EICAS message and master caution whilst landing in MCP APP mode with the autopilot disconnected.

From Manual Part II:
"Autopilot (AUTO PILOT) Light:

Illuminated (amber) -
- a degraded operating condition exists in engaged autopilot" (page 97)

and

"AUTOPILOT, Caution, AUTO PILOT, Beeper

The engaged autopilot is operating in a degraded mode.
Engaged roll and/or pitch mode may have failed." (page 115)


The autopilot is disengaged in this scenario, but the message still shows.

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on May 3rd, 2020 at 11:10pm
Screenshot for the above post, 'AUTOPILOT' occurring at 10 ft RA:

(also the AUTOPILOT DISC message is left on the EICAS to show that the A/P was manually disengaged earlier on the approach)
AUTOPILOT_EICAS.JPG ( 191 KB | 25 Downloads )

Title: Incurrect fuel flow display (lbs vs Kg)
Post by phantomphlyer on May 10th, 2020 at 1:00pm
In the B757-200F it seems that the actual fuel fuel is being displayed in pounds while the fuel weight was changed to KG via CDU - Menu (KG is correctly displayed on the overhead panel).

Title: Re: SYSTEMS & DYNAMICS
Post by phantomphlyer on May 10th, 2020 at 2:15pm
In the B757-200F it seems that the displayed fuel flow is shown in lbs while the fuel weight was changed into Kg, which is correctly displayed on the overhead panel.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on May 11th, 2020 at 9:39am

phantomphlyer wrote on May 10th, 2020 at 2:15pm:
In the B757-200F it seems that the displayed fuel flow is shown in lbs while the fuel weight was changed into Kg, which is correctly displayed on the overhead panel.

I thinks it's correct behavior as our real manual says the same, FF in lb/h regaraless the FMC/Fuel panel unit.

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on May 23rd, 2020 at 10:47pm
(FSX 1.503)

Aircraft vertical speed far exceeds -1250fpm during a cruise descent.

Manual:
(Part II, pg. 443/444)
CRUISE DESCENT
A VNAV cruise descent is commanded at the current cruise speed and approximately 1250
feet per minute rate of descent.
The autothrottles adjust thrust to maintain the target descent rate; pitch maintains the commanded speed.
Thrust levers can be manually positioned to adjust the descent rate.
-----

Observation:

The aircraft descends at 3000fpm during a CRZ DES of 2000ft between FL360 and FL340, 94nm before the original T/D.
This greatly exceeds the quoted 1250fpm approximate descent rate.

cs757_crz_des_001.JPG ( 348 KB | 22 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on May 27th, 2020 at 5:17pm
(FSX 1.503)

When MCP altitude is decreased below cruise, it is not copied into the scratchpad for <=4000ft altitude changes.

Manual:
(Part II, pg. 344)
CRUISE DESCENT
Resetting the MCP to an altitude below the current cruise altitude causes the
new altitude to be copied to the scratchpad if the altitude change is 4000 feet
or less. The new cruise altitude can be entered on the cruise page.
---

Observation:
When performing a cruise climb, the higher MCP altitude is copied into the scratchpad correctly, but on cruise descent, the lower MCP altitude is NOT copied at all.

Screenshot shows planning of a cruise descent from FL360 to FL340 (see MCP). The altitude has not copied to the scratchpad to enter into the CRZ ALT field.
scratchpad.JPG ( 124 KB | 23 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Jun 30th, 2020 at 1:06pm
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Jul 15th, 2020 at 12:02pm
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Jul 26th, 2020 at 2:01am
Speed intervene will set VNAV PATH into VNAV SPD even when in "ON APPROACH" MODE.
The description is on Manual part II page 349 "ON APPROACH" MODE
The condition I have is:
Approaching RJBB RWY24R, with RNAV24R(trans MATAH) programed into box.
LNAV and VNAV PATH Passsing MAYAH, try to open spped window to slow aircraft down for flaps, but when speed intervene pressed, the VNAV PATH change to VNAV SPD.
Close speed window, VNAVPATH gain back.
Tried again after BB451, again it changed into VNAV SPD.
Even after FAF, I still can't get VNAV PATH in, so I have to make an V/S approach.

AIIR#6

Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Jul 30th, 2020 at 9:45am
Something I have noticed when climbing in VNAV. The FMC gives a climb speed of say 310/.786  At about FL290 when M.786 is reached, the speed just keeps increasing and only at about M0.81 does the pitch go up to get the speed back to M0.786.
There is somewhat of a delay in the AP response in pitch.
BTW - I think the 767 has the same issue

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Aug 3rd, 2020 at 2:00pm

Angel of Attack wrote on Jul 26th, 2020 at 2:01am:
Speed intervene will set VNAV PATH into VNAV SPD even when in "ON APPROACH" MODE.
The description is on Manual part II page 349 "ON APPROACH" MODE
The condition I have is:
Approaching RJBB RWY24R, with RNAV24R(trans MATAH) programed into box.
LNAV and VNAV PATH Passsing MAYAH, try to open spped window to slow aircraft down for flaps, but when speed intervene pressed, the VNAV PATH change to VNAV SPD.
Close speed window, VNAVPATH gain back.
Tried again after BB451, again it changed into VNAV SPD.
Even after FAF, I still can't get VNAV PATH in, so I have to make an V/S approach.

AIIR#6


Here is the save flight for that condition, I tried it again, same behavoir
The procedure I use was in real plane's FCOM-NP-Landing Procedure - Instrument Approach Using VNAV, altough it's not in CS's manual 3, The related system behavoir are all in CS manual 2, so no excuse here ;)
In the save I just pass MAYAH (IAF for the approach), heading BB450, as there is a 185kts speed restrection, I need to lower the flaps, I tried to Open the IAS window for manual speed match as 757's VNAV, unlike 737's one, would not do if for me (that's well simed then :)).
I also noticed 2 more issue with in the same save, but I'll report them separately as required
https://www.captainsim.org/forum/csf.pl?action=downloadfile;file=CS757VNAVAPPROACHMODE.zip ( 138 KB | 12 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Aug 3rd, 2020 at 2:04pm

Angel of Attack wrote on Aug 3rd, 2020 at 2:00pm:

I also noticed 2 more issue with in the same save, but I'll report them separately as required

1. Before I pass MAJOH (FAF) I reset MCP ALT to GoAround alt at 3000', the VNAV keeps in VNAV PATH, but right at passing MAJOH, at 1600', it changes to ALT HOLD, rather than stat follow the final glide slope in VNAV PATH mode, and the VNAV can't be engaged after that.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Aug 3rd, 2020 at 2:12pm

Angel of Attack wrote on Aug 3rd, 2020 at 2:00pm:

I also noticed 2 more issue with in the same save, but I'll report them separately as required


2.When crossing a waypoint, the VNAV's path will "jerk around" for a bit, in this save most noticeably after MAYAH and BEIGE (but happens most of time even at high altitude). the path will likely set low (more than 400feet- out of scale) afterwise and VNAV will try to dive to that path with high descent rate.

Title: Re: SYSTEMS & DYNAMICS
Post by OM457 on Aug 25th, 2020 at 11:10am
Hi, normal flight and everything, but no ETA, fuel or ability to fix this. Can't calculate Vspeeds. Latest build. happened on LAX-BOS route with PW2037 pax variant.
2020-8-25_13-8-30-773.jpg ( 423 KB | 17 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by OM457 on Aug 25th, 2020 at 11:12am

OM457 wrote on Aug 25th, 2020 at 11:10am:
Hi, normal flight and everything, but no ETA, fuel or ability to fix this. Can't calculate Vspeeds. Latest build. happened on LAX-BOS route with PW2037 pax variant.

So apparently this happens when you insert winds into legs manually. (since you can't uplink winds from ASP4 or anything)

Title: Re: SYSTEMS & DYNAMICS
Post by Alex T on Sep 9th, 2020 at 1:05pm
I assume CS is working on an update to get all the 767 fixes to this plane? Hope it comes out soon I’ve been waiting patiently! :P

Anyway,

The 757 C2 shedding is a little different than the 767. Here’s how it works. One source is a maintenance ATA manual, other is a pilot flight manual for United.

When you turn them on, C2 will only shed IF C1 is also on, with only one AC power source available. So as soon as an engine is online, it will come back on.

https://imgur.com/a/cGTsJ7v

Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Sep 9th, 2020 at 6:15pm
[quote author=atav757 link=1576518392/42#42 date=1599656718]I assume CS is working on an update to get all the 767 fixes to this plane? Hope it comes out soon I’ve been waiting patiently! :P

Me too  ;D

Title: Re: SYSTEMS & DYNAMICS
Post by Alex T on Sep 17th, 2020 at 12:32pm
I noticed no formatting on my last post report about center  hydraulics, want to make sure this is in the list for fix?

Title: Re: SYSTEMS & DYNAMICS
Post by tommchowat on Oct 9th, 2020 at 3:45pm
Things noticed on 1.6 for P3Dv5:

1) FD indications on takeoff fixed. Thanks.
2) VNAV descent above FL100 always results in speed dropping over 15 knots from commanded speed and THRUST REQUIRED message. Seems calculated descent path is too shallow? Descent winds are entered into the Forecast page. This is with or without and descent restrictions.
AIIR#6

3)
Nope. One issue ONE post, please. https://www.captainsim.org/forum/csf.pl?num=1533652095

Unable to disconnect Autothrottle using thumb buttons on thrust levers in any phase of flight apart from when on approach. If I try to disconnect the AT during cruise or descent for example, SPD just re-annunciates on the FMA. Only way to do it is to use switch on MCP.
4) STILL getting Autopilot warning and yellow line through GS FMA in last 20 feet of landing (someone posted a picture of this exactly problem on the previous page). Happens in manual or automatic flight.


Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on Oct 9th, 2020 at 7:56pm
[FSX 1.6]

HOLD waypoint is shown on the LEGS page with course instead of 'HOLD AT' above its name.

(Manual Part II, pg. 415)
" Leg segment data in line title:
      courses - magnetic (xxx°) or true (xxx° T)
      arcs - distance in miles, ARC, turn direction (example: 24 ARC L)
      heading leg segments - xxx° HDG
      track leg segments - xxx° TRK
      special procedural instructions from database - HOLD AT, PROC TURN. "

---

In the image, HOLD AT is not shown on the second instance of SPL, instead the course is displayed again below the original waypoint:

AIIR#6
HoldAt757.JPG ( 92 KB | 6 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by tommchowat on Oct 10th, 2020 at 3:06pm

tommchowat wrote on Oct 9th, 2020 at 3:45pm:
Things noticed on 1.6 for P3Dv5:

1) FD indications on takeoff fixed. Thanks.
2) VNAV descent above FL100 always results in speed dropping over 15 knots from commanded speed and THRUST REQUIRED message. Seems calculated descent path is too shallow? Descent winds are entered into the Forecast page. This is with or without and descent restrictions.
AIIR#6

3)
Nope. One issue ONE post, please. https://www.captainsim.org/forum/csf.pl?num=1533652095

Unable to disconnect Autothrottle using thumb buttons on thrust levers in any phase of flight apart from when on approach. If I try to disconnect the AT during cruise or descent for example, SPD just re-annunciates on the FMA. Only way to do it is to use switch on MCP.
4) STILL getting Autopilot warning and yellow line through GS FMA in last 20 feet of landing (someone posted a picture of this exactly problem on the previous page). Happens in manual or automatic flight.



Face palm. This is possibly one of the worst support forums around. You'd like me to write 3 separate posts, only for you to then put AIIR at the end of all of them... I give up.

Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Oct 10th, 2020 at 4:00pm

CaptLE wrote on Oct 9th, 2020 at 7:56pm:
[FSX 1.6]

HOLD waypoint is shown on the LEGS page with course instead of 'HOLD AT' above its name.

(Manual Part II, pg. 415)
" Leg segment data in line title:

I have this same problem.
      courses - magnetic (xxx°) or true (xxx° T)
      arcs - distance in miles, ARC, turn direction (example: 24 ARC L)
      heading leg segments - xxx° HDG
      track leg segments - xxx° TRK
      special procedural instructions from database - HOLD AT, PROC TURN. "

---

In the image, HOLD AT is not shown on the second instance of SPL, instead the course is displayed again below the original waypoint:

AIIR#6


Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Oct 10th, 2020 at 4:01pm

CaptLE wrote on Oct 9th, 2020 at 7:56pm:
[FSX 1.6]

HOLD waypoint is shown on the LEGS page with course instead of 'HOLD AT' above its name.

(Manual Part II, pg. 415)
" Leg segment data in line title:

I have this same problem.
      courses - magnetic (xxx°) or true (xxx° T)
      arcs - distance in miles, ARC, turn direction (example: 24 ARC L)
      heading leg segments - xxx° HDG
      track leg segments - xxx° TRK
      special procedural instructions from database - HOLD AT, PROC TURN. "

---

In the image, HOLD AT is not shown on the second instance of SPL, instead the course is displayed again below the original waypoint:

AIIR#6


Title: Re: SYSTEMS & DYNAMICS
Post by trevors on Oct 10th, 2020 at 4:01pm
I have the same problem with the hold feature.

Title: Re: SYSTEMS & DYNAMICS
Post by tommchowat on Oct 12th, 2020 at 2:47pm
Here we go, I'll give this a try.

Attempting to disconnect Auto Throttle during cruise using the thrust lever button. Autothrottle remains engaged, and SPD mode re-annunciates on the FMA. Video below.

https://youtu.be/3DSQxw1ys3g

AIIR#6

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Oct 14th, 2020 at 10:38am
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Oct 18th, 2020 at 4:33am
RR(535E4) Engine assume temperature and EPR issue.
I have reported this with 1.60RC2, but the post is gone and it's still there with 1.601HF, so I'll report it again.
The EPR will go down too fast with SEL tempture rise, the table is on manual IV page 25, for today's flight from sea level, and ATM to 60, it should give 1.54, but when input sel temp in FMC TO page, it will give like 1.38 or so, I have to use 40C SEL to get 1.54 TO EPR, and I take off with 1.54 feels right on the performance needed (didn't test it with single engine failure though)

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Oct 19th, 2020 at 9:13am
Off-Topic replies have been moved to this Topic.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Oct 18th, 2020 at 10:49am
When landing with Autobrakes, the Autobrakes will disram if excessive control wheel roll inputs are made. I guess is due to the spoiler movment introduced by roll input. (not 100% sure but with dozens of landing I feel that way)
On manual II p535, it says it will disarm when speedbrake LEVER is moved from full up position.

When using A2A accu_feel, there is much more roll movment on ground run and needed to be counter by wheel input, (more real than default), so this issue is more noticable.

Title: Re: SYSTEMS & DYNAMICS
Post by Captain Sim on Oct 19th, 2020 at 9:17am
BEYOND THIS POINT PLS MAKE SURE YOU ARE ON VERSION 1.7

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Oct 20th, 2020 at 1:14pm
Over all great job a VNAV with 1.7!
But I still feel there is a little bit too steep when descent below FL100 and with speed 240, the aircraft feels gain speed about 2~3 second a knot when idle around 5000~10000' at speed 240 and on VNAV PATH
https://www.captainsim.org/forum/csf.pl?action=downloadfile;file=CS752FL100B250.zip ( 149 KB | 6 Downloads )

Title: Re: SYSTEMS & DYNAMICS
Post by Funkarter on Oct 20th, 2020 at 8:20pm
Great improvement with the VNAV.

Thank you for the hard work.

Chris

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Oct 22nd, 2020 at 12:42pm
VNAV command a high CRZ speed after some turblence.
today with 752WP2040, I have enconterd some Heavy turblance when normally CRZ at FL360, and it send my speed slightly overspeed, the SPD LIM for AT is actived, and I have to manually climb the aircraft to drop back to speed. Also I changed my CRZ ALT from 360 to 400, before I noticed it's over the MAX FL388, so I set it back to 380 and descent back from like FL385 to FL380.

After settle back to FL380, the VNAV in CRZ mode command a speed on speed tape right at the amber band(about .84), while the FMC CRZ page shows proper ECON speed at .800 (but the title shows ACT LIM),  I tried to change SEL SPD in FMC, change CI, disconnect and reconnect AT/VNAV... they all not work, the speed back stick to amber band. I can then only fly with SPD INVL (soeed knob push) and set it manually.
https://www.captainsim.org/forum/csf.pl?action=downloadfile;file=cs752highcrz.zip ( 146 KB | 3 Downloads )

Title: 1.7 VNAV issues
Post by Dreamflight767 on Oct 23rd, 2020 at 4:39am
Still having trouble with VNAV 1.7 P3Dv4.5 HF3.

-TOD keeps jumping between two points approx. 85NM apart.   

-For some reason, the FMS keeps commanding two different speeds (258KTS and 250KTS)  so the throttle keeps rapidly increasing and decreasing.

AIIR#6
Speed-2.jpg (Attachment deleted)

Title: Re: 1.7 VNAV issues
Post by Dreamflight767 on Oct 23rd, 2020 at 4:41am
Speed
Speed.jpg (Attachment deleted)

Title: Re: 1.7 VNAV issues
Post by Dreamflight767 on Oct 23rd, 2020 at 4:41am
TOD
TOD.jpg (Attachment deleted)

Title: Re: 1.7 VNAV issues
Post by Dreamflight767 on Oct 23rd, 2020 at 4:42am
TOD-2
TOD-2_001.jpg (Attachment deleted)

Title: Re: 1.7 VNAV issues
Post by Angel of Attack on Oct 23rd, 2020 at 4:51am
Report it in bug report Post?

I have seen this in 1.6RC, but not yet in 1.7

Title: Re: 1.7 VNAV issues
Post by Dreamflight767 on Oct 23rd, 2020 at 4:52am
So after I started my descent, excessive rate (3,000'+) and excess speed (310+KTS).

VNAV unusable.

Title: Re: SYSTEMS & DYNAMICS
Post by Angel of Attack on Oct 25th, 2020 at 11:51am

Angel of Attack wrote on Oct 18th, 2020 at 4:33am:
RR(535E4) Engine assume temperature and EPR issue.
I have reported this with 1.60RC2, but the post is gone and it's still there with 1.601HF, so I'll report it again.
The EPR will go down too fast with SEL tempture rise, the table is on manual IV page 25, for today's flight from sea level, and ATM to 60, it should give 1.54, but when input sel temp in FMC TO page, it will give like 1.38 or so, I have to use 40C SEL to get 1.54 TO EPR, and I take off with 1.54 feels right on the performance needed (didn't test it with single engine failure though)


Similar to this, PW2040's EPR from FMC is also off, in CS it's the same with PW2037, which is match to realworld 2037 data, but the real 2040 should be about 0.06 higher EPR at low temperature, about the same at 50~55C, and 0.01 lower at 70C.

Title: Re: SYSTEMS & DYNAMICS
Post by luke_scott on Nov 30th, 2020 at 5:24pm
VNAV Decent, throttles not working. overspeed or stall

CAPTAIN SIM FORUM » Powered by YaBB 2.6.0!
YaBB Forum Software © 2000-2020. All Rights Reserved.