MD80 initiates TCASII climb maneuver while under cos control.

Attributes
ACN	503460
Time
Date	200103
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : brk.vortac
State Reference	CO
Altitude	msl single value : 10500
Environment
Flight Conditions	VMC
Light	Daylight Daylight
Aircraft 1
Controlling Facilities	tracon : cos.tracon
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C, 210D
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Route In Use	enroute other
Flight Plan	VFR
Aircraft 2
Controlling Facilities	tracon : cos.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	pilot : private
Experience	controller limited radar : 10 controller radar : 7 controller time certified in position1 : 6 flight time total : 120
ASRS Report	503460
Person 2
Function	instruction : trainee
Qualification	pilot : private
Events
Anomaly	conflict : airborne critical
Independent Detector	aircraft equipment : tcas other controllera other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	horizontal : 12000 vertical : 200
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

C210 had MD80 in sight. MD80 was 2 mi and 200 ft from C210. Received an RA and climbed. MD80 was already climbing to 16000 ft and was above the cessna.

Original NASA ASRS Text

Title: MD80 INITIATES TCASII CLB MANEUVER WHILE UNDER COS CTL.

Narrative: C210 HAD MD80 IN SIGHT. MD80 WAS 2 MI AND 200 FT FROM C210. RECEIVED AN RA AND CLBED. MD80 WAS ALREADY CLBING TO 16000 FT AND WAS ABOVE THE CESSNA.

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.