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flight visibility??

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Old 20th Mar 2004, 11:46
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Question flight visibility??

Im stuck!! Is the minimum vis allowed for a PPL in class G, 5km?? How about a CPL?? Also ive seen 3km mentioned in regard to this? And 1800m if the aircraft is travelling less than 140kts. Which is it??

Also how about class D airspace?? and cloud??

Thanks for your help!!
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Old 20th Mar 2004, 14:36
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The privileges of your licence (ANO Schedule 8) state that the minimum visibility for a PPL is 3Km. If you have a valid IMC rating, that becomes 1800 metres below cloud. These are the legal minima and form part of the licence privileges. The ANO can be found at: http://www.hmso.gov.uk/si/si2000/20001562.htm

In addition, there are the VFR minima for different Classes of airspace which can be found in the AIP ENR 1.2. For Class G airspace below F100 the visibility required is 5 Km however, for aircraft operating below 3000 feet at 140 Kts or less this reduces to 1500 metres, clear of cloud and in sight of the surface. The AIP can be found at: http://www.ais.org.uk

Your PPL restricts you to 3 Km so you cannot take advantage of all of this reduction. A CPL holder can.

If you obtain a copy of LASORS there is a guide to UK VFR rules and procudures at the back. http://www.caa.co.uk/docs/33/LASORS.PDF
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Old 21st Mar 2004, 05:35
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Interesting how systems differ. Here in OZ we don't have any change in VMC according to what license you hold.

Quick question S+L - what does this mean?
If you have a valid IMC rating, that becomes 1800 metres below cloud.
Does that mean a PPL holder with his/her IMC must have at least 1800m vis? Surely your instrument ticket allows you to fly in zero vis? (ie: through cloud )
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Old 21st Mar 2004, 08:39
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ROB x38

The IMC rating is not an IR, but allows most of the IR privileges outside controlled airspace, and in Classes D and E.

The IMC rating effectivelly removes the 3 Km visibility limitation imposed on PPL holders, but imposes the 1800 metres limit when flying below cloud, for take off and landing.

The UK SVFR minima is 10 Km for PPL holders, this reduces to 3 Km for IMC rating holders.

Holders of JAA PPLs issued by States other than the UK have a license visibility minima of 1500 metres!
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Old 21st Mar 2004, 08:40
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How can you be 'below cloud' if you're in cloud?
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Old 21st Mar 2004, 09:18
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minima

Strateandlevel

On the issue of the IMC rating the holder is absolved the requirement to maintain 3,000m in flight viz. The IMC holder may fly in full accordance with VFR in VMC, when below 3000' QNH 1500m CLEAR of cloud whether below it or above or to the side dosn't matter. 1nm (1852m) is for landing and taking off.

Bookworm

We need you! 1500m is the VMC minima. A JAA PPL is allowed to fly at the VMC in-flight minima (UK Licence restricts) If one says that the IMC pilot must have 1,852m for taking off and landing always, even when undertaking a VFR/IFR flight within VMC ................................. a contradiction arises, wheres the rub?
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Old 21st Mar 2004, 12:51
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thanks for your replies. But which one do I accept. The 5km visibility given for class D to class G airspace or my licence minima which gives me 3km?? Im confused??

Also how would having a CPL without IMC give me??
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Old 21st Mar 2004, 14:29
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Fudgy, there's one set of limitations for the licence you hold (modified by an IMC or IR) and another set for the airspace in which you're flying.

You have to use which ever is most limiting at the time.
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Old 21st Mar 2004, 15:21
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The requirement is to obey your licence privileges.

For a non-IMC-rated pilot this means flying VFR (min vis 5 km) or SVFR (min vis 10 km unless notified lower) in controlled (A to E) airspace, and flying with a visibility of at least 3 km in uncontrolled (F/G) airspace. There is no requirement to maintain VFR in F/G, but if you don't, instrument flight rules on minimum altitude ("1000 ft rule") and cruising levels ("quadrantal rule") apply.

For an IMC-rated pilot, it means flying VFR or SVFR (min vis 3 km) in class A/B/C airspace. In D/E/F/G you can fly IFR too. This again requires compliance with IFR, which in D/E now includes the requirement for an ATC clearance. The only limitation, VFR or IFR, is a minimum flight visibility of 1800 m for take-off and landing.

homeguard, I think you are mistaken in saying "A JAA PPL is allowed to fly at the VMC in-flight minima" if by "JAA PPL" you mean one issued by the UK CAA. Schedule 8 Section 2 2(b) repeats the restrictions imposed on a UK PPL holder of 3000 m minimum flight visibility etc. That probably resolves the contradiction, doesn't it?
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Old 21st Mar 2004, 16:12
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minima

bookworm

No, it dosn't. The JAA do not restrict the PPL to 3000m but only to the VFR minima of 1500m. The UK restricts a UK PPL to the 3000m.

On the issue of an IMC rating it has been my believe and those I have spoken to at the CAA that the UK restriction of 3000m is removed. (at least while the IMC is valid - needs clarifing also).

Therefore the IMC Pilot may fly VFR at 1500m. If that is the case then there is another anomaly in that the landing minima for the IMC rating is 1852m (1800m normally stated) unless the 1nm caveat is only for landing off an instrument approach, but if so, then what of the take off 1nm restriction.

Thats me question.
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Old 21st Mar 2004, 19:13
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The IMC rated pilot requires 1800m for take-off and landing. They may fly VFR in 1500m visibility. They may fly IFR in 0 visibility (cloud).

There is no contradiction.

Depart in a visibility of 1800m or more, fly enroute in a visibility of 1500m or more and land in a visibility of 1800m or more will satisfy VMC for the IMC rated pilot.

Of course, his Friend with a JAA PPL from a non-UK country can depart, fly enroute and land all with 1500m visibility.....obvously a much better pilot.

While talking Special VFR don't forget that in many control zones within the UK, a UK PPL without IMC can fly special VFR in an entry/exit land notified for the purposes of Schedule 8 with 3Km visibilty.

They don't half make it simple.

Oh and another - the UK has a difference with ICAO regarding VMC in class D - the clear of cloud bit. Don't forget when abroad that a special VFR clearance may be required in 50K visibility if one can't remain 1000ft vertically from cloud. Since ICAO requirements say no less than 500ft enroute - this means that a ceiling of less than 1500ft requires a special VFR clearance to enter or exit a zone!!

Regards,

DFC
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Old 21st Mar 2004, 20:46
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The bit I've never quite got my head round ...

In F and G airspace the only requirement on me is 3km visibility, at any height (I've got a UK PPL, not a JAA one), according to my Air Law text book.

However above 3000' VMC minima are 5Km, 1000', 1500m (same text book). The JAA PPL minima appear to match the VMC minima, so "a JAA PPL holder can only fly in VMC" seems to be a reasonable statement here, but the UK PPL minima appear to allow flight in IMC.

So, with my UK PPL and no instrument qualifications I can fly in certain IMC conditions above 3000', at which point I have to follow IFR rules for safety height and quadrantal direction, yes?

(The reason I've never got my head round this is that I've never actually felt any desire to go flying at such a height in such conditions so it's not a practical question.)
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Old 22nd Mar 2004, 06:44
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No, it dosn't. The JAA do not restrict the PPL to 3000m but only to the VFR minima of 1500m. The UK restricts a UK PPL to the 3000m.
Dunno what more I can add, homeguard. I've cited the restriction: ANO Schedule 8 Part A Section 2 PPL(A) 2(b).

It doesn't seem anomalous that a pilot is permitted to fly in reduced visibility enroute but requires certain conditions for take-off and landing, does it?

Gertude, looks like you've got your head around it just fine.
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Old 22nd Mar 2004, 07:26
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Gertrude,

Yup, you're correct. It's is one of the anomolies of that has yet to be ironed out. Your basic PPL states that outside controlled airspace you must remain in 3k vis, clear of cloud and in sight of the surface. Nowhere in the ANO does it state you must remain VMC or VFR.

ANO Schedule 8.1(c)
He shall not, unless his licence includes an instrument rating (aeroplane) or an instrument meteorological conditions rating (aeroplanes), fly as pilot in command of such an aeroplane:

(i) on a flight outside controlled airspace when the flight visibility is less than 3km;

(ii) on a special VFR flight in a control zone in a flight visibility of less than 10 km except on a route or in an aerodrome traffic zone notified for the purpose of this sub-paragraph; or

(iii) out of sight of the surface.
So, your in Class G at 4000 feet with 4 km vis, but your clear of cloud and in sight of the surface (one real hot and hazy summers day), the conditions are below VMC, but as a basic PPL you are flying legally as you satisfy the criteria of licence issue. Legal yes, sensible methinks no.
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Old 22nd Mar 2004, 08:09
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GusHoneybun,

so does this rule only apply if you are above 3000ft in class f or G??

Whats SVFR??
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Old 22nd Mar 2004, 08:37
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viz minima

Where I think the anamoly lies is maybe in the definition of flight.

A flight is deemed to have commenced when the aircraft first moves under it's own power with the intention of taking off until coming to a halt after it has landed.

The UK IMC rating absolves the UK pilot from the UK restriction of requireing the 3k in flight minima. The ANO then will allow the IMC Pilot to take off and land using 1500m viz.

A foriegn JAA PPL (basic, 1hr of instrument appreciation/interpretation) flies to the UK in 1500m of viz and lands in 1500m of viz.

A UK/IMC holder (highly trained and qualified in IMC), who has flown VFR also within 1500m visibilty throughout the flight and is No. 2 to the foriegn chap to land, can't, because he requires 1800m. It seems odd and questionable.

The ANO clearly states that the 3000m UK restriction does not apply to the IMC holder - incidentally it dosn't appear to demand that the IMC Rating need be valid, only to be entered in the licence.

The rhetorical question of mine is; on the application of the 1800m minima, it is perhaps applicable only when taking off with the intention to fly IMC or on the completion of an Instrument Approach. i.e. when it is intended to use the priviledges of the IMC rating. When flying VFR 'F' and 'G' you are not exercising the priviledges of the IMC but holding the IMC (valid or not) exempts you differently from the licence restriction imposed on the Basic UK/PPL.
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Old 23rd Mar 2004, 07:54
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It says somewhere in the JARs that a flight may not be commenced in vis below 3km and not otherwise conducted in vis below 1.5km therefore your JAA PPL holder flying around in europe actually needs 3km to take off on his flight. However if he then finds himself in worse weather he can still legally land SVFR in 1.5km.
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Old 23rd Mar 2004, 10:18
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JAR-OPS 1.465 says that. Note that JAR-OPS1 only applies to public transport flights.
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Old 23rd Mar 2004, 19:38
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The ANO then will allow the IMC Pilot to take off and land using 1500m viz.
NO IT DOESN'T


ANO SECTION 1 SCHEDULE 8 PAGE 18

the holder shall not fly:
(i)........
(ii)when the aeroplane is taking off or landing at any place if the flight visibility below cloud is less than 1800 metres.



http://www.caa.co.uk/docs/33/CAP393.PDF
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Old 23rd Mar 2004, 19:54
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BRAVO vfrflyer.

Furthermore,

A foriegn JAA PPL (basic, 1hr of instrument appreciation/interpretation) flies to the UK in 1500m of viz and lands in 1500m of viz.
Well, if we're talking about a JAR-FCL PPL, then
ANO SECTION1 SCHEDULE8 PAGE11
The holder shall not......., fly as pilot in command.....
(i)on a flight outside controlled airspace when the flight visibility is less than 3km.

So that's what they have to comply with in the UK!!
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