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No Compass Procedures

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Old 18th May 2004, 09:48
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No Compass Procedures

Doing my occasional read of the AIP's to see what I don't know.

I came across this one.

AIPGEN 3.4 5.14.2 2 (Page 58!)

In the case of a compass failure ATC may advise, "Radar service will continue using no-compass procedures, confirm familiar?"

Well, b*ggered if I remember coming across this in my training, or in the ERSA EMERG section. Any advice on what these "no-compass procedures" are?

I appreciate now with a GPS, and DG's once has backups....but out of curiosity what are these procedures and where are they?

At a guess, rate one turns or rate half turns on command from ATS?

Cheers (and expect more obscure questions in coming days....!)

CS
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Old 18th May 2004, 10:32
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Man Bilong Balus long PNG
 
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Question

I did my CPL back in 1985 with an instructor of the 'old school' and then and indeed a few years later when I did my (as it was called then) class 1 instrument rating the only thing I was taught was timed turns in the event of a DG failure. I practise them myself every now and then just to see if I can still do them.
As for the 'no compass'...... Never heard of it!!

You only live twice. Once when
you're born. Once when
you've looked death in the face.
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Old 18th May 2004, 11:29
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Digging deep now. You tell ATC you have no compass. During radar vectoring, ATC will monitor your progress and tell you when to stop your turn. (Left a bit, right a bit, right a bit more, ah..that's it). I guess if they forget about you, you'll just go round in circles!
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Old 18th May 2004, 12:35
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"start the turn now", followed by "stop the turn now"

all Rate 1

usually vectors to cloud break (or bailout area!!)
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Old 18th May 2004, 15:09
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Well that wasn't too hard now. Thanks for the info.

I can now inform ATC, in Oz, that I am familiar, if the worst happens with the compass.
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Old 19th May 2004, 00:31
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ftrplt, if it's that simple, why do they need to confirm that a pilot is familiar with it?
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Old 19th May 2004, 00:53
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So... what happens if you say that you are NOT familiar?
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Old 19th May 2004, 02:34
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ATC will take a minute to describe what the words 'Start turn' & 'Stop turn' means...
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Old 19th May 2004, 02:36
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No compass - No prob

Hi CS

A lot of these sorts of procedures are carried over form a combination of RAAF and Civi documents which occured a few years ago.

While it is possible in the Civi case to have compass and DG, HSI. RMI, both slaves ect to fail, it is considered very unlikely. In the RAAF case a combat damaged aircraft may in fact have no inst navaids ect available so these procedures are practiced by RAAF pilots and hence ftrplt knowing it well.

The confirmation is to ensure that pilot and controller are taliking from the same page and to reduce any/further confusion.

If you are interested in that one how about the right and left triangle for radio fail in ERSA, and my personal fav is the speechless radio procedure where it talks about holding (locking) the TX switch before bailing out/ejecting. Not a real option in a Metro unfortunatly.

PS anybody had a read of the intercepted aircraft signals lately?, in our current word situation, who knows.

Richo
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Old 19th May 2004, 05:45
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Ah Richo, my favorite subject, Interception.

I don't know how many engines I've had rebuilt after trying to intercept these B*&^%y F111's that keep buzzing around here. I nearly got one a week or so ago in my Piper 172, all I have to do now is get the ripples out of the wings.

Seriously, ERSA does have some amusing little ditties when viewed from a civilian operational viewpoint.

Stallie, for heavens sake, can't you find anything decent to read, that is unless you actually are trying to put yourself to sleep at night, if so, have a read of the Act

Disco Stu
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Old 19th May 2004, 08:03
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From an ATC point of view the most 'fun' controlling was turning the: No radio, No compass, Precision Radar Approach acft onto final while controlling several other aircraft.
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Old 19th May 2004, 13:14
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From an ATC point of view the most 'fun' controlling was turning the: No radio, No compass, Precision Radar Approach acft onto final while controlling several other aircraft.
and flying at 350kts just to make it interesting!!


Richo, you arent a rather cuddly young curly haired bloke are ya??
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Old 20th May 2004, 08:20
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NO

Mr flrplt

Not Cuddly at all,

Not Curly haired,

and not very young anymore.

But I used to sit next to the bloke/ets that said "ZIPLIP"

Luv Nightcliff, duckhole sux

(Oh so long ago)



Richo
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