EXT XFER caution is displayed when it shouldn't

[BarTzi]

From NATOPS page I-2-13:

 

External Transfer Caution Display. On F/A-18C/D aircraft, an EXT XFER caution display

on the DDI indicates that external fuel is available and should have transferred. The caution is also displayed when external fuel is available at BINGO and FUEL LO.

 

What's wrong in DCS:

 

At the moment, it doesn't take the fuel quantity in the tank into account.

 

It will immediately pop EXT XFER when you set any external tank to STOP on the EXT TANKS panel - which is the correct behaviour. However, it will also do it when the tank is completely empty - which is wrong.

EXT XFER empty tank.trk

[Andartu]

EXT XFER Caution by NATOPS also:

 

----

 

• One or more external tanks failed/slow to transfer when commanded.

Icing may occur in the external fuel tank pressurization system

inhibiting external tank transfer and refueling. Descending and

accelerating may reduce the effects of icing.

External fuel available but not transferring.

On F/A-18C/D aircraft, selecting ORIDE on both EXT TANKS

fuel control switches may inhibit centerline tank transfer.

 

 

Corrective Action:

 

Perform the following steps while

monitoring fuel transfer, tank quantities,

and lateral asymmetry -

3. EXT TANKS switch(es) - ORIDE

4. EXT TANKS switch(es) - CYCLE to

STOP and back to ORIDE

5. EXT TANKS switch(es) - NORM

6. PROBE switch - CYCLE

7. Apply positive and negative g.

8. F/A-18C/D only: FUEL page/SDC -

RESET

If practical -

9. Descend below freezing level and repeat

steps 3 thru 8.

10. If below 10,000 feet MSL, BLEED

AIR knob - CYCLE THRU OFF TO

NORM

11. LDG GEAR and HOOK handles -

DOWN

12. LDG GEAR and HOOK handles - UP

13. Perform in-flight refueling.

If/when transfer complete but prior

to landing -

14. EXT TANKS switch(es) - NORM

If external wing tank fuel trapped -

15. Ensure lateral asymmetry within limits

for landing.

FOR CARRIER LANDING

If centerline tank is still over 500

pounds -

16. Divert or SELECT JETT tank.

 

----

 

EXT XFER actually always occur when refueling above 20.000ft (in sim). I think in cause of the icing. At least in my case.. as soon the external tank/s are refueled a bit, it usually disappears. I am still not sure if this behavior is correct though. Cycling EXT Tanks switch does nothing.