correct as is No GPS in persian gulf / How to fix NAV error?

[Racoon-1-1]

I came across the problem, that I can't get any GPS on the persian gulf map (after 1986, "unlimited satnav" is activated in the ME). Another problem is that the manual says nothing on how to fix the NAV error during flight. Selecting IFA in the air seem to make it much worse very quickly. But when just just selecting NAV even after a short flight (~5min) (and after a full carrier alignment ("0.5 OK")), CCIP becomes so unprecise that it's completely unusable. 

Any help and/or information on that matter would be awesome.

kind regards.

 

EDIT: Ok, it seems that when I change the date to >= 1996, GPS works again. (even though "unlimited satnav" seems to indicate that the date shoulnd't play a role)

But is there still a possibility to fix NAV error? 

 

Edited November 20, 2022 by Racoon-1-1

[Hulkbust44]

2 hours ago, Racoon-1-1 said:

I came across the problem, that I can't get any GPS on the persian gulf map (after 1986, "unlimited satnav" is activated in the ME). Another problem is that the manual says nothing on how to fix the NAV error during flight. Selecting IFA in the air seem to make it much worse very quickly. But when just just selecting NAV even after a short flight (~5min) (and after a full carrier alignment ("0.5 OK")), CCIP becomes so unprecise that it's completely unusable. 

Any help and/or information on that matter would be awesome.

kind regards.

 

EDIT: Ok, it seems that when I change the date to >= 1996, GPS works again. (even though "unlimited satnav" seems to indicate that the date shoulnd't play a role)

But is there still a possibility to fix NAV error? 

 

 

Yes, you can do a tacan fix, overfly does not work yet IIRC. The INS simulation is lacking, no DL fix, flyover fix, radar fix, no PVU etc.

[rob10]

And as long as you have GPS you need to put it in IFA not in NAV after it's finished aligning on the carrier.  Only use NAV in no GPS scenario's.

If you change it to IFA in-flight (with GPS) to align it, you need to stay straight and level until it's finished aligning and LEAVE IT in IFA.

[QuiGon]

15 hours ago, Racoon-1-1 said:

EDIT: Ok, it seems that when I change the date to >= 1996, GPS works again. (even though "unlimited satnav" seems to indicate that the date shoulnd't play a role)

IIRC the "unrestricted satnav" option doesn't apply to the date of satnav availability, but to the side of satnav availability, because satnav is only available to the side that has the US in it IIRC and with the unrestricted satnav option all sides will have access to satnav (provided the mission date is more recent than 1994).

Edited November 21, 2022 by QuiGon

[BIGNEWY]

 

1. If the plane has not move since start of the mission: coordinates of the first waypoint can be used to set own coordinates after INS align completed

a) on HSI page choose wpt 0 using PB12 "up" or PB13 "dn", then press PB14 "WPDSG"

b) on HSI page press PB7 "UPDT", press PB7 "DSG", press PB6 "ACPT"

 

2. In case the plane has moved since start of the mission: you can use TCN position update after INS align completed

a) TACAN beacon data must be saved in MC

b) turn on the TACAN and set channel and band of the beacon, set T/R mode; you must receive bearing and range

c) on HSI page press PB7 "UPDT", press PB6 "TCN", press PB6 "ACPT"