Medium large transport crew had TCASII RA in descent into dtw.

Attributes
ACN	464049
Time
Date	200002
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : djb.vortac
State Reference	OH
Altitude	msl bound lower : 16000 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors arrival star : cetus 2
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : atp pilot : multi engine
Experience	flight time last 90 days : 220 flight time total : 20000 flight time type : 9000
ASRS Report	464049
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne critical non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 12000 vertical : 1000
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

While on a 030 degree vector for dtw approach/control, for spacing, the ATC controller gave us a descent to 13000 ft. He also called traffic at 2 O'clock position, 16000 ft. As we descended across his path and altitude, we got a TA which became a 'climbing' RA. We climbed back to 17000 ft and got a 'clear of conflict.' 1) problem arose with a required descent too close to converging traffic. 2) discovered by receipt of an RA. 3) contributing factors: the controller was very busy at the time with not enough help for the amount of traffic he was working. 4) more controllers.

Original NASA ASRS Text

Title: MLG CREW HAD TCASII RA IN DSCNT INTO DTW.

Narrative: WHILE ON A 030 DEG VECTOR FOR DTW APCH/CTL, FOR SPACING, THE ATC CTLR GAVE US A DSCNT TO 13000 FT. HE ALSO CALLED TFC AT 2 O'CLOCK POS, 16000 FT. AS WE DSNDED ACROSS HIS PATH AND ALT, WE GOT A TA WHICH BECAME A 'CLBING' RA. WE CLBED BACK TO 17000 FT AND GOT A 'CLR OF CONFLICT.' 1) PROB AROSE WITH A REQUIRED DSCNT TOO CLOSE TO CONVERGING TFC. 2) DISCOVERED BY RECEIPT OF AN RA. 3) CONTRIBUTING FACTORS: THE CTLR WAS VERY BUSY AT THE TIME WITH NOT ENOUGH HELP FOR THE AMOUNT OF TFC HE WAS WORKING. 4) MORE CTLRS.

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.