Aircraft on departure, maintaining a high climb rate, was given an immediate leveloff by ATC. As the crew attempted to comply, TCASII was emitting same altitude traffic RA's. The crew descended approximately 500 ft utilizing the TCASII warnings.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	487426
Time
Date	200008
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : msp.airport
State Reference	MN
Altitude	msl bound lower : 8500 msl bound upper : 9000
Environment
Flight Conditions	IMC
Weather Elements	Thunderstorm Turbulence
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : m98.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : m98.tracon
Operator	general aviation : corporate
Make Model Name	Cessna Citation Undifferentiated or Other Model
Operating Under FAR Part	Part 135
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 250 flight time total : 11000 flight time type : 1500
ASRS Report	487426
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 5000 vertical : 0
Supplementary
Problem Areas	ATC Human Performance Weather
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

During climb in IMC. ATC instructed us to 'level at 9000 ft immediately.' we were previously cleared to 17000 ft and were climbing in excess of 4000 FPM. The instruction came as we were passing 8600 ft. PF disengaged autoplt to level off. TCASII activated with several conflicting RA's (monitor vertical speed, climb, then descend). Screen showed traffic co-altitude. PF descended to approximately 8500 ft. Controller frantically started issuing instructions. We were unable to hear because TCASII was very loud. Captain called ATC facility and they acknowledged their error and apologized. I don't understand why the controller just didn't let us continue our climb. We would have been way above him (the traffic) and no factor with our current rate of climb when ATC instructed us to level off.

Original NASA ASRS Text

Title: ACFT ON DEP, MAINTAINING A HIGH CLB RATE, WAS GIVEN AN IMMEDIATE LEVELOFF BY ATC. AS THE CREW ATTEMPTED TO COMPLY, TCASII WAS EMITTING SAME ALT TFC RA'S. THE CREW DSNDED APPROX 500 FT UTILIZING THE TCASII WARNINGS.

Narrative: DURING CLB IN IMC. ATC INSTRUCTED US TO 'LEVEL AT 9000 FT IMMEDIATELY.' WE WERE PREVIOUSLY CLRED TO 17000 FT AND WERE CLBING IN EXCESS OF 4000 FPM. THE INSTRUCTION CAME AS WE WERE PASSING 8600 FT. PF DISENGAGED AUTOPLT TO LEVEL OFF. TCASII ACTIVATED WITH SEVERAL CONFLICTING RA'S (MONITOR VERT SPD, CLB, THEN DSND). SCREEN SHOWED TFC CO-ALT. PF DSNDED TO APPROX 8500 FT. CTLR FRANTICALLY STARTED ISSUING INSTRUCTIONS. WE WERE UNABLE TO HEAR BECAUSE TCASII WAS VERY LOUD. CAPT CALLED ATC FACILITY AND THEY ACKNOWLEDGED THEIR ERROR AND APOLOGIZED. I DON'T UNDERSTAND WHY THE CTLR JUST DIDN'T LET US CONTINUE OUR CLB. WE WOULD HAVE BEEN WAY ABOVE HIM (THE TFC) AND NO FACTOR WITH OUR CURRENT RATE OF CLB WHEN ATC INSTRUCTED US TO LEVEL OFF.

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.