Protected Airspace for Circling Approaches To Expand

AINalerts » April 23, 2013
April 23, 2013, 3:37 PM

The FAA will begin publishing instrument approaches that use larger circling-approach airspace dimensions on May 2, addressing industry safety groups’ assertions that the radii were “insufficient to contain large, jet transport airplanes during the circle-to-land maneuver,” according to NBAA.

This increase in circling protected airspace will provide improved lateral clearance from obstacles, while allowing additional maneuvering room to assist pilots in stabilizing the final approach and landing, the association noted. The lack of maneuvering room in circling approaches has led to an increased frequency of runway overruns after circle-to-land approaches, NBAA said.

U.S. terminal procedures approach charts will have a “Negative C” circle icon, and Jeppesen charts a “Negative C” diamond icon, to identify circling minimums that use the new expanded circling area dimensions. Circling minimums without these icons still use the smaller circling area dimensions, NBAA said.

Under the expanded minimums, circling radii could be up to 1 nm larger than they were previously. NBAA has set up a dedicated web page to explain these changes.

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scott elder
on April 24, 2013 - 8:01pm

Here's something else they should fix....I used to do some training in circles because I flew an airplane with a limited simulator.....so my practice was take every opportunity to try to do circling approaches on positioning legs
Etc.....one time I was right on the numbers in a VFR circle...160kts...min speed for 30deg bank...timed my turns....rolled right into 30....and the FMS showed me at 5.7nm....so maybe 4.7 from the threshold....jeez I started thinking....I flew it right....what happened.....so on the next leg I went through all of the things I could think of....it was blowing 22k g 27 at the airport.....that was at the surface I was at 7000 or so...probably had a 30kt tailwind on downwind.. One of the major reasons you circle is no suitable approach for wind direction.....so guess what...you probably always have a tailwind....jeez...my 160 kias was really about 190 kigs....then thought a little more.....airport elevation about 5000ft...pressure altitude conversion....I'm at about 7000ft...PA is probably 8000....2% per 1000 PA conversion.,.... 160 x 2% = 3.2. X 7. .... Cripes I'm thinking. ... That's another 25kts....on top of the 190kts. I'm doing.... That's like 220kts....no wonder I'm 6 nm from the airport....ever since then at my training events (as student or instructor)....I preach that the chart should say KTGS...!! ......not KIAS.......think about the reasons your circling... High altitude mountainous airports with limited approaches.....KTGS Should be on the chart along with 2%/1000ft PA.....

No Avatar
scott elder
on April 24, 2013 - 8:01pm

Here's something else they should fix....I used to do some training in circles because I flew an airplane with a limited simulator.....so my practice was take every opportunity to try to do circling approaches on positioning legs
Etc.....one time I was right on the numbers in a VFR circle...160kts...min speed for 30deg bank...timed my turns....rolled right into 30....and the FMS showed me at 5.7nm....so maybe 4.7 from the threshold....jeez I started thinking....I flew it right....what happened.....so on the next leg I went through all of the things I could think of....it was blowing 22k g 27 at the airport.....that was at the surface I was at 7000 or so...probably had a 30kt tailwind on downwind.. One of the major reasons you circle is no suitable approach for wind direction.....so guess what...you probably always have a tailwind....jeez...my 160 kias was really about 190 kigs....then thought a little more.....airport elevation about 5000ft...pressure altitude conversion....I'm at about 7000ft...PA is probably 8000....2% per 1000 PA conversion.,.... 160 x 2% = 3.2. X 7. .... Cripes I'm thinking. ... That's another 25kts....on top of the 190kts. I'm doing.... That's like 220kts....no wonder I'm 6 nm from the airport....ever since then at my training events (as student or instructor)....I preach that the chart should say KTGS...!! ......not KIAS.......think about the reasons your circling... High altitude mountainous airports with limited approaches.....KTGS Should be on the chart along with 2%/1000ft PA.....

No Avatar
tony stansbury
on April 25, 2013 - 5:22am
No Avatar
tony stansbury
on April 25, 2013 - 5:22am

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