IFR aircraft with pct at 4000 landing iad failed to adhere to speed requirements below class B airsp...

Attributes
ACN	831501
Time
Date	200904
Local Time Of Day	0601-1200
Place
Locale Reference	AML.VORTAC
State Reference	VA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Falcon 10/100
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 35 Flight Crew Total 8500 Flight Crew Type 600
Events
Anomaly	Deviation - Procedural Published Material / Policy Deviation - Speed All Types

Narrative:

We were west of iad being vectored northeasterly; for landing at iad. A descent to 4;000 ft was given by approach. Aml was being monitored on #2 DME; and being on a vector; #1 was set up for the ILS. When descent clearance was given; I believe we were a little more than 20 miles from aml. After monitoring the autopilot leveloff at 4;000 ft; I noticed we were just under 20 miles from aml (below class B airspace). Began slowing aircraft to 200 KTS. We may have gone back out beyond 20 DME for a little while before being turned toward the final course; but did not increase speed. Class B airspace was designed to accommodate aircraft landing and departing the primary airport. It helps with safety conflicts and separation with aircraft using other airports. When landing at a primary airport; I would like to see it used without dropping any aircraft underneath its veil of protection. And if it has to happen; approach should let their intent be known; so that speed can be decreased and vigilance increased.

Original NASA ASRS Text

Title: IFR aircraft with PCT at 4000 landing IAD failed to adhere to speed requirements below Class B airspace; citing ATC failed to insure aircraft remained within the confines of protected airspace.

Narrative: We were west of IAD being vectored northeasterly; for landing at IAD. A descent to 4;000 FT was given by Approach. AML was being monitored on #2 DME; and being on a vector; #1 was set up for the ILS. When descent clearance was given; I believe we were a little more than 20 miles from AML. After monitoring the autopilot leveloff at 4;000 FT; I noticed we were just under 20 miles from AML (below Class B airspace). Began slowing aircraft to 200 KTS. We may have gone back out beyond 20 DME for a little while before being turned toward the final course; but did not increase speed. Class B airspace was designed to accommodate aircraft landing and departing the primary airport. It helps with safety conflicts and separation with aircraft using other airports. When landing at a primary airport; I would like to see it used without dropping any aircraft underneath its veil of protection. And if it has to happen; Approach should let their intent be known; so that speed can be decreased and vigilance increased.

Data retrieved from NASA's ASRS site as of April 2012 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.

IFR aircraft with pct at 4000 landing iad failed to adhere to speed requirements below class B airspace; citing ATC failed to insure aircraft remained within the confines of protected airspace.