Multiple runway operation parallel simultaneous runway approachs. Air carrier X had less than standard separation from air carrier Y TCASII TA. System error.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	228857
Time
Date	199212
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 4800 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord tower : sfo
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Flight Phase	cruise other cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	228857
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other other : unspecified atc
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated
Miss Distance	horizontal : 4500 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure Operational Error

Narrative:

Doing simultaneous ILS runways 27, I was low side runway 27R, turned air carrier X in and called traffic to him, air carrier Y for parallel runway. I believe air carrier X said he saw air carrier Y so I didn't use other separation means but went about doing other things. That was a problem. Air carrier Y got a TCASII advisory. That started the ball rolling, tapes being pulled and so on. Came back to work next day to find out I had a 'deal' previously.

Original NASA ASRS Text

Title: MULTIPLE RWY OP PARALLEL SIMULTANEOUS RWY APCHS. ACR X HAD LTSS FROM ACR Y TCASII TA. SYS ERROR.

Narrative: DOING SIMULTANEOUS ILS RWYS 27, I WAS LOW SIDE RWY 27R, TURNED ACR X IN AND CALLED TFC TO HIM, ACR Y FOR PARALLEL RWY. I BELIEVE ACR X SAID HE SAW ACR Y SO I DIDN'T USE OTHER SEPARATION MEANS BUT WENT ABOUT DOING OTHER THINGS. THAT WAS A PROB. ACR Y GOT A TCASII ADVISORY. THAT STARTED THE BALL ROLLING, TAPES BEING PULLED AND SO ON. CAME BACK TO WORK NEXT DAY TO FIND OUT I HAD A 'DEAL' PREVIOUSLY.

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.