Air carrier X issued heading and altitude change to avoid traffic. Possible loss of separation.

Attributes
ACN	115000
Time
Date	198906
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : den
State Reference	CO
Altitude	msl bound lower : 7000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude landing : missed approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 1000
ASRS Report	115000
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 210 flight time total : 8200 flight time type : 1000
ASRS Report	115005
Events
Anomaly	conflict : airborne less severe
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 1000
Supplementary
Air Traffic Incident	other

Narrative:

Executing go around at den 26L. Flying west at 7000' on 118.3 local tower frequency for further instructions. About 5 mi west den tower advised after transposing call signs and some confusion, that we, air carrier X, had traffic at 1 O'clock 7000' same altitude 'do we have him'. We did not right away. Then another voice (female) came on and advised us to climb to 8000' and turn left heading 080. About that time first officer spotted the aircraft in question and maneuvered above and ahead of same. Continued clearance 080 at 8000' to a landing uneventfully on 26L. Supplemental information from acn 115005: problem arose after tower ordered a missed approach because previous aircraft was still on the runway 26L. Missed approach was complicated by the fact that Q widebody transport was simultaneously leaving the ground on takeoff from runway 17L (widebody transport banked left and southeast behind us). Tower (male) gave missed approach instructions as runway heading to 7000'. At about 5 miles west of airport tower called traffic at 1 O'clock, 7000', and asked if we had a visual. We did not initially. Then female voice came on frequency over top of the tower voice and directed a climb to 8000' and turn to 080 degree. Then I saw the traffic and initiated the climb to 8000' keeping the traffic in sight going from 1 O'clock eventually to 5 O'clock. Asked tower what heading he wanted us on and he said 260 degree. Then female voice again directed 080 degree and 8000, which we did. Landing and approach uneventful.

Original NASA ASRS Text

Title: ACR X ISSUED HEADING AND ALT CHANGE TO AVOID TRAFFIC. POSSIBLE LOSS OF SEPARATION.

Narrative: EXECUTING GO AROUND AT DEN 26L. FLYING WEST AT 7000' ON 118.3 LOCAL TWR FREQ FOR FURTHER INSTRUCTIONS. ABOUT 5 MI WEST DEN TWR ADVISED AFTER TRANSPOSING CALL SIGNS AND SOME CONFUSION, THAT WE, ACR X, HAD TFC AT 1 O'CLOCK 7000' SAME ALT 'DO WE HAVE HIM'. WE DID NOT RIGHT AWAY. THEN ANOTHER VOICE (FEMALE) CAME ON AND ADVISED US TO CLIMB TO 8000' AND TURN LEFT HDG 080. ABOUT THAT TIME F/O SPOTTED THE ACFT IN QUESTION AND MANEUVERED ABOVE AND AHEAD OF SAME. CONTINUED CLRNC 080 AT 8000' TO A LNDG UNEVENTFULLY ON 26L. SUPPLEMENTAL INFORMATION FROM ACN 115005: PROBLEM AROSE AFTER TWR ORDERED A MISSED APCH BECAUSE PREVIOUS ACFT WAS STILL ON THE RWY 26L. MISSED APCH WAS COMPLICATED BY THE FACT THAT Q WDB WAS SIMULTANEOUSLY LEAVING THE GND ON TKOF FROM RWY 17L (WDB BANKED LEFT AND SE BEHIND US). TWR (MALE) GAVE MISSED APCH INSTRUCTIONS AS RWY HDG TO 7000'. AT ABOUT 5 MILES WEST OF ARPT TWR CALLED TFC AT 1 O'CLOCK, 7000', AND ASKED IF WE HAD A VISUAL. WE DID NOT INITIALLY. THEN FEMALE VOICE CAME ON FREQ OVER TOP OF THE TWR VOICE AND DIRECTED A CLIMB TO 8000' AND TURN TO 080 DEG. THEN I SAW THE TFC AND INITIATED THE CLIMB TO 8000' KEEPING THE TFC IN SIGHT GOING FROM 1 O'CLOCK EVENTUALLY TO 5 O'CLOCK. ASKED TWR WHAT HDG HE WANTED US ON AND HE SAID 260 DEG. THEN FEMALE VOICE AGAIN DIRECTED 080 DEG AND 8000, WHICH WE DID. LNDG AND APCH UNEVENTFUL.

Data retrieved from NASA's ASRS site as of August 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.