PPRuNe Forums

Go Back   PPRuNe Forums > Ground & Other Ops Forums > ATC Issues
Forgotten your Username/Password?
PPRuNe Email Register FAQ Calendar Advertise Mark Forums Read

ATC Issues A place where pilots may enter the 'lions den' that is Air Traffic Control in complete safety and find out the answers to all those obscure topics which you always wanted to know the answer to but were afraid to ask.


Reply
 
Thread Tools Display Modes
Old 15th March 2008, 23:09   #1 (permalink)
magpienja
 
Join Date: Dec 2001
Location: North Cheshire
Posts: 197
Non transponder a/c in CAS.

Hi all what is the current position with a GA aircraft requesting a CTR class D zone transit not equipped with a transponder, I seem to remember reading that things change this month.

Nick.

Last edited by magpienja : 15th March 2008 at 23:10. Reason: error

magpienja is offline  
Reply
Old 16th March 2008, 02:31   #2 (permalink)
 
Join Date: Mar 2001
Location: EGHL ish
Posts: 1,621
Really, what are the changes then?
AlanM is offline   Reply
Old 16th March 2008, 11:08   #3 (permalink)
 
Join Date: Dec 2001
Location: North Cheshire
Posts: 197
Well that's what I am asking, as I said I seem to remember that maybe it will not be allowed but maybe I am mistaken, its not something I have had to think about before never needing to enter CAS but possibly may need to request it in the near future for a flight I am thinking of doing.

Nick.

Last edited by magpienja : 16th March 2008 at 14:31.
magpienja is offline   Reply
Old 17th March 2008, 13:13   #4 (permalink)
 
Join Date: Aug 2005
Location: uk
Posts: 155
To be honest - I wouldn't be very keen on clearing traffic through my airspace unless it can squawk anyway - whatever the rules say!

louby
loubylou is offline   Reply
Old 17th March 2008, 20:07   #5 (permalink)
 
Join Date: Apr 2001
Location: Sometimes north, sometimes south
Posts: 651
If you want an IFR clearance through a Class D zone you already have to have a transponder. The difference from 31-3-08 is that your transponder must be Mode S. But if you have a Mode A/C transponder you can apply for an exemption from the Mode S requirement from the CAA.

If you only want a VFR clearance through a Class D zone there is no imminent change in the requirements, although there is a CAA proposal out to consultation which would require all aircraft in CAS (irrespective of flight rules) to have a Mode S transponder from 31-3-09, with a transition period to 31-3-12.

NS
NorthSouth is offline   Reply
Old 17th March 2008, 21:07   #6 (permalink)
 
Join Date: Dec 2001
Location: North Cheshire
Posts: 197
NorthSouth thats what I was after but I could not remember the details,

Many thanks.

Nick.
magpienja is offline   Reply
Old 17th March 2008, 23:33   #7 (permalink)
 
Join Date: Oct 2004
Location: South of UK
Posts: 163
NorthSouth,

You shouldn't need an exemption for using Mode A/C only transponder after 31/03/08, it is an acceptable means of compliance for aircraft already fitted until 2012. New aircraft and new installations must be Mode S.
Radarspod is offline   Reply
Old 20th March 2008, 12:38   #8 (permalink)
Bellwether&cloudbuster
 
Join Date: Mar 2007
Location: Bristol UK
Posts: 154
This is a major scare for the hot air balloon community. It is both technically impossible (Mode S tiny transponders are not in existence yet as far as my research finds) and not wanted by the majority of ATCOs (from what we hear in pub chat), but it seems to be on the CAA "to do list".

Since most balloons that do fly in controlled airspace have specific access agreements with their regional airports, then the sledgehammer approach by the authorities seems entirely out of proportion.

The British Gliding Association have invited all pilots from different air sports to meetings with the CAA in April to put forward the case.
Julian Hensey is offline   Reply
Old 20th March 2008, 14:27   #9 (permalink)

 
Join Date: May 2006
Location: UK
Posts: 465
Balloons operating out of the LHR and City Zones are required to have r/t and transponders and they seem to manage okay.

If they can currently power those can they not also power a Mode S txpdr instead of an A/C one?

As an aside, where I work I don't mind if traffic is using Mode A/C or Mode S but I do support a mandatory altitude reporting txpdr for all.
Roffa is offline   Reply
Old 21st March 2008, 11:54   #10 (permalink)
 
Join Date: Dec 2006
Location: Surrey
Posts: 38
Mode S, fantastic on jets, we can tell if they are cheating on speed compliance plus added safety net of checking levels/altitudes selected. Can't believe that controllers wouldn't want it. Same info from a balloon? Not quite as useful to a controller tho. A/C is useful wherever
2.5 miles is offline   Reply
Old 21st March 2008, 15:01   #11 (permalink)
NorthSouth
 
Join Date: Apr 2001
Location: Sometimes north, sometimes south
Posts: 651
Radarspod:
Quote:
You shouldn't need an exemption for using Mode A/C only transponder after 31/03/08, it is an acceptable means of compliance for aircraft already fitted until 2012
So what's this for then?
NS

NorthSouth is offline  
Reply
Old 25th March 2008, 14:35   #12 (permalink)
Radarspod
 
Join Date: Oct 2004
Location: South of UK
Posts: 163
I stand corrected , much to my annoyance

Radarspod is offline  
Reply
Reply


Thread Tools
Display Modes


Posting Rules
vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
No Transponder AndyGB Private Flying 12 24th December 2007 22:58
transponder ! tangovictor Private Flying 4 6th December 2007 19:17
do i need a transponder? UAV689 ATC Issues 5 13th July 2007 12:10
No Transponder? topcat450 Private Flying 22 22nd October 2004 19:42
Transponder gramps Questions 3 10th April 2003 09:18


All times are GMT +1. The time now is 07:15.


Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.2.0 RC7
© 1996-2008 The Professional Pilots Rumour Network

As these are anonymous forums the origins of the contributions may be opposite to what may be apparent. In fact the press may use it, or the unscrupulous, or sciolists*, to elicit certain reactions.

*"sciolist"... Noun, archaic. "a person who pretends to be knowledgeable and well informed".