Evasive action climb in response to an unnecessary TCASII warning.

Attributes
ACN	280017
Time
Date	199408
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dca
State Reference	DC
Altitude	msl bound lower : 2000 msl bound upper : 2500
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Challenger Jet Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 11300 flight time type : 1500
ASRS Report	280017
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 15000
ASRS Report	280016
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 9000 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

On radar vectors to 12336 at dca. Left downwind, vectors 098 degrees. As we were given a turn to intercept the localizer, TCASII alert, red target approximately 3 mi, 200 ft below, 12 O'clock, opposite direction. RA -- 'climb, climb.' we followed the RA, altitude excursion of 500 ft. Notified dca approach, who told us the traffic was being vectored behind us. Vectors by this controller were late and imprecise throughout the approach. The explanation was delivered by a different voice. Training?

Original NASA ASRS Text

Title: EVASIVE ACTION CLB IN RESPONSE TO AN UNNECESSARY TCASII WARNING.

Narrative: ON RADAR VECTORS TO 12336 AT DCA. L DOWNWIND, VECTORS 098 DEGS. AS WE WERE GIVEN A TURN TO INTERCEPT THE LOC, TCASII ALERT, RED TARGET APPROX 3 MI, 200 FT BELOW, 12 O'CLOCK, OPPOSITE DIRECTION. RA -- 'CLB, CLB.' WE FOLLOWED THE RA, ALT EXCURSION OF 500 FT. NOTIFIED DCA APCH, WHO TOLD US THE TFC WAS BEING VECTORED BEHIND US. VECTORS BY THIS CTLR WERE LATE AND IMPRECISE THROUGHOUT THE APCH. THE EXPLANATION WAS DELIVERED BY A DIFFERENT VOICE. TRAINING?

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.