TCASII TA of traffic 1000 ft below. Did not continue descent.

Attributes
ACN	255773
Time
Date	199311
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : jvl
State Reference	WI
Altitude	msl bound lower : 21000 msl bound upper : 22000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8000 flight time type : 2500
ASRS Report	255773
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Our clearance was cleared direct to jvl cross jvl at 14000 ft, maintain 250 KTS. Captain was expediting descent to make restriction. TCASII gave a TA at approximately FL220. I stated we have traffic 2000 ft directly below us, captain leveled off at 1000 ft above traffic. I called center, and ATC agreed we had traffic 1000 ft below us and ATC stated maintain FL210. Once TCASII showed traffic 5 mi behind us, I told ATC we could continue our descent and clearance was given to 14000 once again. Other aircraft was not visible to us as there was a cloud deck between us.

Original NASA ASRS Text

Title: TCASII TA OF TFC 1000 FT BELOW. DID NOT CONTINUE DSCNT.

Narrative: OUR CLRNC WAS CLRED DIRECT TO JVL CROSS JVL AT 14000 FT, MAINTAIN 250 KTS. CAPT WAS EXPEDITING DSCNT TO MAKE RESTRICTION. TCASII GAVE A TA AT APPROX FL220. I STATED WE HAVE TFC 2000 FT DIRECTLY BELOW US, CAPT LEVELED OFF AT 1000 FT ABOVE TFC. I CALLED CTR, AND ATC AGREED WE HAD TFC 1000 FT BELOW US AND ATC STATED MAINTAIN FL210. ONCE TCASII SHOWED TFC 5 MI BEHIND US, I TOLD ATC WE COULD CONTINUE OUR DSCNT AND CLRNC WAS GIVEN TO 14000 ONCE AGAIN. OTHER ACFT WAS NOT VISIBLE TO US AS THERE WAS A CLOUD DECK BTWN US.

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.