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\"Intercept LLZ\" question

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EHM-2097 Andrei:
Hi all,

I'm trying to find out which is the "best practice" for both pilots and ATC.

As a pilot (with not so many hours online), whenever I am instructed to "intercept localizer" I assume I have to maintain latest assigned heading (for a while if necessary) until my NAV instruments tell I am close to crossing the localizer axis.

I assumed the same as approach controller so I used to instruct pilots to intercept localizer with some time in advance.

It work nicely until the day when i issued this instruction a little to early and the pilot IMMEDIATELY pressed "APP" on his autopilot. This resulted of course in a very large zig-zag before he finally was stable on the runway centerline.

My instructor at the time told me I should expect this interpretation from most pilots on IVAO. And this is why I am posting this question here, I assume there are a few :) pilots around so please tell me how you react to the "intercept localizer" instruction.

I am worried because I see obvious risks when issuing this instruction too late so I'm still looking for a method to make everyone happy.

Thanks for your good advice

Andrei

EHM-0654 Murray:
Funnily enough, I'd agreed with your personal interpretation Andrei - maintain alt/heading (as required) until the instruments have you on both the localizer and glideslope.

Might I suggest you use the phrase "to intercept the localizer", at the end of something else for instance ("Turn right hdg XXX to intercept the localizer rwy YY, report established", sort of thing)

EHM-1651 Christian:
When issued the: Cleared ILS runway ..... report established, I always maintain heading and altitude until i can turn directly onto the localizer, then I engage the approach function on the autopilot or fly the ILS manually. From my point of view this is the correct method of intercepting the ILS, rather then turn so you get onto the LLZ right away which results in a large zig zag pattern most times.

EHM-1759 Ricardo:
Do not forget when ATC instructs you to intercept ILS he must give you at the most 30º degrees in relation centerline of the runway to intercept localizer and perform ILS approach.

Let see a simple example: You have runway 03, the ATC must give you at the most hdg 060 (if you come from the left of the runway) to intercept ILS of this runway, or if you come by the right side of centerline the ATC must give you at the most hdg 001 to intercept the localizer.

Well, about to click APP button, personally I prefer to perform the first part of ILS approach manually to avoid several turns you have talk. When I see I am +/- established I do push APP button. However, do not forget that ILS must be intercepted by the bottom side because of altitude to be read by the glideslope, otherwise the aircraft do not descend...

I hope it helps.

EHM-2029 Sotiris:
Hello All,

while I agree with everyone who wrote till now, in my view the confusion is in how you phrase the instruction.

1) Intercept Radial X VOR or Intecept Localiser
This is a fairly direct instruction and it is likely to result in a pilot going for it as a matter of priority.

2) Report established Radial X VOR or Localiser
This is a subtle but important difference. The instruction here is not to intercept ASAP but to report when they do, thus allowing pilots time to perform this in their prefered and usually most effective manner. Usually this should be preceded by a finish in your last command like thus: "When finishing my last command, expect to intercept Radial X or Localiser"

I favour the latter approach to issuing tracking/establishing commands.

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