Narrative:

Aircraft X; was on the south arrival to miami being worked into runway 9 at miami. There was a sequence of multiple inbounds to the airport. A VFR departed tmb northwest bound climbing; through 027; under the bravo; right at the edge against gritt; and the runway 9 ILS. Approach observed the VFR climbing into aircraft X in the descent in the downwind and stopped the heavy's descent at 035 and bent the base turn back out to the southwest to miss aircraft Y. The sequence was altered and dangerous because of an inadequate bravo airspace; and VFR's are allowed to be 1 ft under the glideslope of miami's finals to all runways at 10 miles.miami's bravo airspace was designed back in the day from its original terminal control area. It has been inadequate for years in terms of its size; protecting the finals at this airport; and protecting the VFR flying public from the abundance of large; heavy; and super wake turbulence into and out of this major international airport. Presently; all arrivals drop out of the bravo for about 1/8 mi to every runway at around 10 mi around the field; and VFR's are allowed to fly there 1 ft underneath all of these arrivals. That is extremely dangerous and unsafe and needs to change; before it's too late and lives are lost.

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Original NASA ASRS Text

Title: Miami TRACON Controller reported an airborne conflict with an arrival into Fort Lauderdale and a VFR just below the Class Bravo.

Narrative: Aircraft X; was on the south arrival to Miami being worked into Runway 9 at Miami. There was a sequence of multiple inbounds to the airport. A VFR departed TMB northwest bound climbing; through 027; under the bravo; right at the edge against GRITT; and the Runway 9 ILS. Approach observed the VFR climbing into Aircraft X in the descent in the downwind and stopped the heavy's descent at 035 and bent the base turn back out to the southwest to miss Aircraft Y. The sequence was altered and dangerous because of an inadequate bravo airspace; and VFR's are allowed to be 1 ft under the glideslope of Miami's finals to all runways at 10 miles.Miami's bravo airspace was designed back in the day from its original terminal control area. It has been inadequate for years in terms of its size; protecting the finals at this airport; and protecting the VFR flying public from the abundance of large; heavy; and super wake turbulence into and out of this major international airport. Presently; all arrivals drop out of the bravo for about 1/8 mi to every runway at around 10 mi around the field; and VFR's are allowed to fly there 1 ft underneath all of these arrivals. That is extremely dangerous and unsafe and needs to change; before it's too late and lives are lost.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.