A tad steep indeed but still a long way from the ultimate HI approach… unfortunately that one does not exist anymore for lack of vehicles in airworthy condition. But it has it’s moments trying to fly that.
There is a fun android app which has a very accurate HUD so you can try it for yourself. F-Sim Space shuttle, carefull addictive!
speed wrote:
ROD is not accurate since your VSI goes max to 6000fpm
Nice number for me to fail on an IR skill-test 
Cool story speed and interesting! Thanks for sharing‘
Hello!
I’ve performed that approach several times in the past.
It’s a High TACAN Approach ending on an ILS app.
You’d be flying at FL200/300KIAS direct to the IAF.
After leaving the IAF (TBC R087/35), set your QNH, turn left heading 232º, set a 10º nose dive and speedbrake out (all at the same time while you are calling ATC: “Mago21 leaving the fix, FL200 QNH1008”. You will looking at 300KIAS on the descend while intercepting CRS 308 towards TBC. ROD is not accurate since your VSI goes max to 6000fpm and you are descending well beyond that so keep your 300KIAS and 10º dive.
Do not descend below 4500’ until established on the inbound radial and you’ve passed 17NM TBC inbound, then continue descending to 3000’. At 3000’ leave the speedbrake out as required and let the airspeed drop to 240KIAS, passing 250KIAS set flaps to the LE position.
Now change your CDI from TAC to ILS, maintain 240KIAS and when reaching 9.3NM lower the gear and flaps to the full position. Check flaps full and three greens, you are 7.3NM start your descend with the glide and call ATC: “Mago21 on gate, gear down and locked for full stop”.
This approach is for MIL ONLY, we used to fly this approach because it’s more fuel efficient, specially when expecting a delay (FFlow could be 2 times at low level) and because when we were expecting icing condtions at low levels, we were able to cross the icing levels without having to stop in them nor holding at them.
This is the most I remember from the good old days flying the F-5 in western Spain.
Regards!
Speed
tschnell wrote:
that would be a ROD of -5000 fpm. Quite impressive…
What’s the issue when pressurized? I’m sure they can do much more than that.
On something like a DA42 as long as your ears don’t bleed you can go pretty down very fast with gear down and engines idling
Peter wrote:
What kind of receiver would support this I have no idea. I’ve not heard of any “GA” product which does TACAN
The distance part of a TACAN is a regular DME, so you have that at least.
Assuming those jets on average fly something like 300 KTAS on that segment, that would be a ROD of -5000 fpm
I believe @buster1 might know about this
Your plane has TACAN? < shock >
Funnily enough the Sandel SN3500 EHSI (I have two of them) has a TACAN decode/display option. It is a $1k cost for the software key to enable it. What kind of receiver would support this I have no idea. I’ve not heard of any “GA” product which does TACAN. Sandel sell a lot to the military sector.
Peter wrote:
Great; I will try that tomorrow
Your plane has TACAN? < shock >
Assuming those jets on average fly something like 300 KTAS on that segment, that would be a ROD of -5000 fpm. Quite impressive…
Ibra wrote:
The FL200 hold remark says it all (“not to scale”)
It also says MIL USE ONLY….
