<< >> NASA ASRS Report 503920, March 2001

After TA exchange by mia, descending B767 to 8000 ft initiates TCASII climb due to departure climbing to 7000 ft A320.

Attributes
ACN	503920
Time
Date	200103
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mia.airport
State Reference	FL
Altitude	msl bound lower : 8000 msl bound upper : 8800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia.tracon
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : mia.tracon
Operator	common carrier : air carrier
Make Model Name	A310
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 11
ASRS Report	503920
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne critical
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 1000
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

Air carrier X was inbound to mia on vector, descended to 8000 ft. Air carrier Y had just departed mia and was climbing to 7000 ft. I gave air carrier X traffic call and told him other aircraft was level at 7000 ft. He responded roger, then said he was responding to TCASII alert and climbing. Air carrier X climbed to 8800 ft before he could descend. Air carrier Y aircraft never climbed out of 7000 ft.

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Original NASA ASRS Text

Title: AFTER TA EXCHANGE BY MIA, DSNDING B767 TO 8000 FT INITIATES TCASII CLB DUE TO DEP CLBING TO 7000 FT A320.

Narrative: ACR X WAS INBOUND TO MIA ON VECTOR, DSNDED TO 8000 FT. ACR Y HAD JUST DEPARTED MIA AND WAS CLBING TO 7000 FT. I GAVE ACR X TFC CALL AND TOLD HIM OTHER ACFT WAS LEVEL AT 7000 FT. HE RESPONDED ROGER, THEN SAID HE WAS RESPONDING TO TCASII ALERT AND CLBING. ACR X CLBED TO 8800 FT BEFORE HE COULD DSND. ACR Y ACFT NEVER CLBED OUT OF 7000 FT.

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.