I recently had the pleasure of listening to the controllers at Kennedy Centre, La Guardia Approach and LGA Tower calls on a night after 65kts winds had closed all the NY crosswind runways and stacked up aircraft across America. The controllers managed a course correction call of 3-4 seconds duration, with a read-back of similar length, followed immediately by another call, etc. This resulted in about 7 - 8 instructions with read-back every minute.
If an average circuit is say 2 minutes from the joining call to turning final call there is time to make 32 NY style calls (without a read-back) and we have only to make 3 per circuit, we should have little difficulty landing 3 - 4 gliders almost simultaneously and all making their required 3 circuit calls plus inbound calls. "NY style calls" does assume glider pilots will use the stated minimum call contents and not discuss separation matters. Michael Shirley -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Hart Sent: Friday, 24 March 2006 3:30 PM To: Discussion of issues relating to Soaring in Australia. Subject: Re: NAS2c circuit calls Re: [Aus-soaring] Queensland EasterCompetition and FLARM Peter Stephenson wrote: > I phrased and proposed the wording of that motion at the GQ meeting and > almost said "mandatory recommended" the oxymoron used by the NAS2c > implementation committee when they were selling the multiple calls in the > circuit. :-)) > > BTW how are you guys doing with these calls? Able to get them in every > circuit? The NASIG are going around RAPAC's asking for comments. >From the > NT RAPAC minutes: > NAS > We will be briefing the pilots at the upcoming Easter comp to be sensitive about their radio calls on the finish frequency and into the circuit. I would suggest that if we have more than a few gliders in the circuit making the 'mandatory recommended' calls, a few more calling 10km inbound and trying to find one another (FLARM helps enormously here btw from experiences at Lk Keepit) and a busy airfield surface (so that in circuit gliders need to sort out who is landing where) the frequency will become in danger of congestion resulting in a reduction of safety. We obviously cannot (nor should we) tell pilots NOT to make the 'mandatory recommended' calls, but pilots do need to ensure there is enough space for new, incoming gliders and for critical messages important to safety. With 50 gliders ariving over 30 minutes, frequency congestion is possible if everyone is not sensitive to the overall picture. It's good airmanship really. -- Robert Hart [EMAIL PROTECTED] +61 (0)438 385 533 http://www.hart.wattle.id.au _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
