B757-200 crew had TCASII RA in bwi class B airspace.

Attributes
ACN	511195
Time
Date	200105
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : bwi.tracon
State Reference	MD
Altitude	msl single value : 3200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi.tracon
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : bwi.tracon
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 615
ASRS Report	511195
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time type : 1657
ASRS Report	511194
Events
Anomaly	conflict : airborne critical non adherence : far non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued alert controller : issued new clearance flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

On may/xa/01 during visual approach to runway 33L bwi, in a B757 aircraft, between 3200-3100 ft, got urgent message from bwi approach to descend to 2000 ft. We immediately increased our fate of descent. At that time we received a climb RA which we executed and advised approach. A GA aircraft passed off our right side between 2800-2900 ft. After we were clear of the conflict, we continued the approach and landed on runway 33L. I called the approach control people and discussed the matter on the phone. Supplemental information from acn 511194: may/xa/01 at XD35 on visual approach to bwi runway 33L at between 3100-3200 ft MSL got urgent ATC instructions to descend to 2000 ft. We started the descent when we got an RA to 'climb, climb.' so we started to climb as we saw a high wing GA aircraft pass to our right at 2800-2900 ft MSL -- way too close. I was hand flying aircraft and captain was working radios. Postflt, we feel we were where we should have been and responded appropriately.

Original NASA ASRS Text

Title: B757-200 CREW HAD TCASII RA IN BWI CLASS B AIRSPACE.

Narrative: ON MAY/XA/01 DURING VISUAL APCH TO RWY 33L BWI, IN A B757 ACFT, BTWN 3200-3100 FT, GOT URGENT MESSAGE FROM BWI APCH TO DSND TO 2000 FT. WE IMMEDIATELY INCREASED OUR FATE OF DSCNT. AT THAT TIME WE RECEIVED A CLB RA WHICH WE EXECUTED AND ADVISED APCH. A GA ACFT PASSED OFF OUR R SIDE BTWN 2800-2900 FT. AFTER WE WERE CLR OF THE CONFLICT, WE CONTINUED THE APCH AND LANDED ON RWY 33L. I CALLED THE APCH CTL PEOPLE AND DISCUSSED THE MATTER ON THE PHONE. SUPPLEMENTAL INFO FROM ACN 511194: MAY/XA/01 AT XD35 ON VISUAL APCH TO BWI RWY 33L AT BTWN 3100-3200 FT MSL GOT URGENT ATC INSTRUCTIONS TO DSND TO 2000 FT. WE STARTED THE DSCNT WHEN WE GOT AN RA TO 'CLB, CLB.' SO WE STARTED TO CLB AS WE SAW A HIGH WING GA ACFT PASS TO OUR R AT 2800-2900 FT MSL -- WAY TOO CLOSE. I WAS HAND FLYING ACFT AND CAPT WAS WORKING RADIOS. POSTFLT, WE FEEL WE WERE WHERE WE SHOULD HAVE BEEN AND RESPONDED APPROPRIATELY.

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.