A B777 crew, on descent to mia, exceeded 250 KTS below 10000 ft within 12 NM of the shoreline.

Attributes
ACN	550219
Time
Date	200206
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : mia.airport
State Reference	FL
Altitude	msl bound lower : 6000 msl bound upper : 1000
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : mia.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	550219
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During descent from the south into miami, the captain asked me to request high speed descent from the controller. I said that I believed inside 12 mi from shore that the controller was not authority/authorized to approve high speed descent. He insisted that I request it and I did. The controller did not reply to the request, but changed our descent altitude from 3000 ft to 8000 ft. The captain continued at high speed (320 KTS-290 KTS) until reaching leveloff at our newly cleared 6000 ft. Upon reaching the shore we were doing 240 KTS and the approach was uneventful.

Original NASA ASRS Text

Title: A B777 CREW, ON DSCNT TO MIA, EXCEEDED 250 KTS BELOW 10000 FT WITHIN 12 NM OF THE SHORELINE.

Narrative: DURING DSCNT FROM THE S INTO MIAMI, THE CAPT ASKED ME TO REQUEST HIGH SPD DSCNT FROM THE CTLR. I SAID THAT I BELIEVED INSIDE 12 MI FROM SHORE THAT THE CTLR WAS NOT AUTH TO APPROVE HIGH SPD DSCNT. HE INSISTED THAT I REQUEST IT AND I DID. THE CTLR DID NOT REPLY TO THE REQUEST, BUT CHANGED OUR DSCNT ALT FROM 3000 FT TO 8000 FT. THE CAPT CONTINUED AT HIGH SPD (320 KTS-290 KTS) UNTIL REACHING LEVELOFF AT OUR NEWLY CLRED 6000 FT. UPON REACHING THE SHORE WE WERE DOING 240 KTS AND THE APCH WAS UNEVENTFUL.

Data retrieved from NASA's ASRS site as of July 2007 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.