LVTMB From United States of America, joined Oct 2004, 386 posts, RR: 0 Posted (7 years 6 months 4 weeks 10 hours ago) and read 2580 times:
I work pretty close to MIA and get the chance to do some spotting. On departures, when the airport is configured either way, flights are assigned a heading. In the sole case of Runway 9 departures, however, when pilots are instructed to turn to the Southeast (usually 120 heading), they are instructed to make that turn at the Runway 27 middle marker, which appears to be roughly half a mile off the end of the runway. Out of curiosity, what is the reason for that procedure, as oppposed to the usual turn when reaching 600'.
IAHFLYR From United States of America, joined Jun 2005, 4790 posts, RR: 25
Reply 1, posted (7 years 6 months 4 weeks 10 hours ago) and read 2574 times:
Most turns can be started at 400'AGL unless with no restrictions in place such as noise or similar....MIA might be using the MM for a noise issue or possibly to make sure they fly runway heading to the middle marker and don't turn early or late or ATC may be using it to establish diverging headings of 15 degress from other departures.
Any views shared are strictly my own and do not a represent those of any former employer.
FlyMatt2Bermud From United States of America, joined Jan 2006, 563 posts, RR: 7
Reply 2, posted (7 years 6 months 3 weeks 5 days 10 hours ago) and read 2488 times:
The turn at a Middle Marker is common at several airports with parallel runways. I do not know the exact reason but have flown similar clearances on numerous occasions. Perhaps ATC is trying to prevent a possible conflict with landing traffic on the parallel should a 'go around' be necessary. Miami also uses Runways 31/13 and it could be they want the 9/27 L or R runway departing aircraft to avoid the same potential conflict.
"When once you have tasted flight, you will forever walk the earth with your eyes turned skyward" Leonardo Da Vinci