ckfred From United States of America, joined Apr 2001, 5528 posts, RR: 2 Posted (2 years 10 months 2 weeks 2 days 14 hours ago) and read 2243 times:
I live near Interstate 355, between 63rd and 75th Streets. Normally, all of the Southwest planes that I see are departures heading west, at various altitudes based on the ORD pattern.
On 8/22, I saw a strange pattern all afternoon and evening. I've been seeing Southwest planes heading northeast at somewhat lower altitudes what I see for MDW departures. They first appear to be in the ORD arrival pattern for Runway 4R, but they are too far east to be in that pattern, and I've noticed some of the planes eventually make gradual turns to the east.
Over the years, I've seen some unusual arrival patterns, say when there are strong thunderstorm cells interfering with normal arrival patterns. But the weather was generally good, with only high thin clouds.
Anyone know why MDW was running such a strange pattern?
fghtngsiouxatc From United States of America, joined Mar 2009, 223 posts, RR: 0
Reply 1, posted (2 years 10 months 2 weeks 2 days 12 hours ago) and read 2191 times:
They were using 13C for part of today. They have to keep arrivals south of ORD airspace for separation, so that's probably what you saw. 4R/22L has been closed for the past 2 days, so MDW is out a major runway. The use of 13C is relatively rare, mostly because it's a PITA for pilots/controllers because of ORD traffic. The weirdest arrival pattern I've seen at MDW is ILS 4R circle to land 13C.
midway7 From United States of America, joined Aug 2004, 155 posts, RR: 0
Reply 2, posted (2 years 10 months 2 weeks 1 day 9 hours ago) and read 1853 times:
Why is 22L / 4R closed? Just curious?
Arrivals on 13C I believe have to be coordinated with ORD when ORD is using 22L for departures (to the east) and possibly 4R for arrivals. Given the potential need for coordination with ORD, I think MDW tends to lien away from using 13C for arrivals.
Someone with better ATC knowledge in the Chicago airspace may have better insight.
All I know is they were doing some sort of construction on the 4R end of the runway. Lots of trucks and what not. It didn't look like they were repaving, though.
I can tell you that MDW will ONLY use 13C when the winds really favor it. They prefer to do 31C circle 22L, but if the ceilings are too low, sometimes they have no choice but to use 13C. They also occasionally use 13C at night when it's much quieter at ORD and MDW.