<< >> NASA ASRS Report 443817, July 1999

A DC10 flight crew was directed to go around, due to boeing 727 on the runway, and may have lost separation during the maneuver.

Attributes
ACN	443817
Time
Date	199907
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 27l
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	443817
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	conflict : airborne less severe non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action flight crew : executed go around
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was cleared for the ILS runway 27L at ord and flew the aircraft down the ILS being advised that a B727 was being released ahead of us on runway 27L. At 200 ft AGL the tower issued a go around to me due to the traffic on the runway ahead. I executed the go around and was given 4000 ft from the tower controller as the go around altitude. The words 'runway heading' were received during the go around and I was not clear if it was for me or for the B727 which was now just below my nose and was visually idented. We were then given departure frequency at that time and the departure controller was virtually yelling a left turn to a 150 degree heading. I initiated the turn at that time and leveled at 4000 ft for another approach. It was possible that separation standards were compromised due to the tower controller not giving us a proper radar vector when he gave us the go around maneuver.

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Original NASA ASRS Text

Title: A DC10 FLC WAS DIRECTED TO GO AROUND, DUE TO BOEING 727 ON THE RWY, AND MAY HAVE LOST SEPARATION DURING THE MANEUVER.

Narrative: I WAS CLRED FOR THE ILS RWY 27L AT ORD AND FLEW THE ACFT DOWN THE ILS BEING ADVISED THAT A B727 WAS BEING RELEASED AHEAD OF US ON RWY 27L. AT 200 FT AGL THE TWR ISSUED A GAR TO ME DUE TO THE TFC ON THE RWY AHEAD. I EXECUTED THE GAR AND WAS GIVEN 4000 FT FROM THE TWR CTLR AS THE GAR ALT. THE WORDS 'RWY HEADING' WERE RECEIVED DURING THE GAR AND I WAS NOT CLR IF IT WAS FOR ME OR FOR THE B727 WHICH WAS NOW JUST BELOW MY NOSE AND WAS VISUALLY IDENTED. WE WERE THEN GIVEN DEP FREQ AT THAT TIME AND THE DEP CTLR WAS VIRTUALLY YELLING A L TURN TO A 150 DEG HDG. I INITIATED THE TURN AT THAT TIME AND LEVELED AT 4000 FT FOR ANOTHER APCH. IT WAS POSSIBLE THAT SEPARATION STANDARDS WERE COMPROMISED DUE TO THE TWR CTLR NOT GIVING US A PROPER RADAR VECTOR WHEN HE GAVE US THE GAR MANEUVER.

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.