<< >> NASA ASRS Report 440746, June 1999

Reporter climbed aircraft 2Y through aircraft 1X. Loss separation, resulted in operational error.

Attributes
ACN	440746
Time
Date	199906
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : mqp.vortac
State Reference	TX
Altitude	msl single value : 37000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zfw.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	440746
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 15000 vertical : 1500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Climbed aircraft 2Y through aircraft 1X. Did not see aircraft 1X because of data block congestion with several other aircraft and the unfamiliarity with the dsr equipment.

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Original NASA ASRS Text

Title: RPTR CLBED ACFT 2Y THROUGH ACFT 1X. LOSS SEPARATION, RESULTED IN OPERROR.

Narrative: CLBED ACFT 2Y THROUGH ACFT 1X. DID NOT SEE ACFT 1X BECAUSE OF DATA BLOCK CONGESTION WITH SEVERAL OTHER ACFT AND THE UNFAMILIARITY WITH THE DSR EQUIP.

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.