TRACON intrafac coordination air carrier Y climb to occupied altitude had less than standard separat...

Attributes
ACN	224771
Time
Date	199210
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : bwi
State Reference	MD
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : bwi
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	224771
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
ASRS Report	224888
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 750 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure Intra Facility Coordination Failure Operational Error

Narrative:

Air carrier X was on a vector for an ILS approach at bwi. Air carrier Y was departing bwi to mia. Air carrier X was approximately 18 mi ssw of bwi when I noticed that he was heading straight at air carrier Y at the same altitude. I immediately issued a turn to air carrier X to a heading of 270 degrees and descended him to 4000. I then pointed the traffic out to the graco controller working air carrier Y and told her to turn air carrier Y and climb. At this point, the aircraft were approximately 7-8 mi apart. Air carrier X mode C indicated he climbed 100 ft and his radar track did not show him turning. I then went back to air carrier X and told him to expedite his descent and called the traffic. The aircraft missed by approximately 200 ft vertical and 1/8 of a mi laterally. This took place about 30 seconds after I assumed the position. The controller I relieved did not relay the information that air carrier X was on a heading and not on the STAR to bwi. The controller that was air carrier X left the operating quarters right away. Had he stayed for 1-2 mins, he might have seen the situation earlier. However, air carrier X was turned and descended about 8 mi from air carrier Y and did not leave 5000 ft until he flew about 4 mi. A more expeditious compliance with ATC instructions would have avoided the aircraft from coming so close. Supplemental information from acn 224888: after departure, air carrier Y was issued climb to 5000 ft. A few mins later air carrier Y was issued a turn and climb to avoid air carrier X at same altitude.

Original NASA ASRS Text

Title: TRACON INTRAFAC COORD ACR Y CLB TO OCCUPIED ALT HAD LTSS FROM ACR X. SYS ERROR.

Narrative: ACR X WAS ON A VECTOR FOR AN ILS APCH AT BWI. ACR Y WAS DEPARTING BWI TO MIA. ACR X WAS APPROX 18 MI SSW OF BWI WHEN I NOTICED THAT HE WAS HDG STRAIGHT AT ACR Y AT THE SAME ALT. I IMMEDIATELY ISSUED A TURN TO ACR X TO A HDG OF 270 DEGS AND DSNDED HIM TO 4000. I THEN POINTED THE TFC OUT TO THE GRACO CTLR WORKING ACR Y AND TOLD HER TO TURN ACR Y AND CLB. AT THIS POINT, THE ACFT WERE APPROX 7-8 MI APART. ACR X MODE C INDICATED HE CLBED 100 FT AND HIS RADAR TRACK DID NOT SHOW HIM TURNING. I THEN WENT BACK TO ACR X AND TOLD HIM TO EXPEDITE HIS DSCNT AND CALLED THE TFC. THE ACFT MISSED BY APPROX 200 FT VERT AND 1/8 OF A MI LATERALLY. THIS TOOK PLACE ABOUT 30 SECONDS AFTER I ASSUMED THE POS. THE CTLR I RELIEVED DID NOT RELAY THE INFO THAT ACR X WAS ON A HDG AND NOT ON THE STAR TO BWI. THE CTLR THAT WAS ACR X LEFT THE OPERATING QUARTERS RIGHT AWAY. HAD HE STAYED FOR 1-2 MINS, HE MIGHT HAVE SEEN THE SIT EARLIER. HOWEVER, ACR X WAS TURNED AND DSNDED ABOUT 8 MI FROM ACR Y AND DID NOT LEAVE 5000 FT UNTIL HE FLEW ABOUT 4 MI. A MORE EXPEDITIOUS COMPLIANCE WITH ATC INSTRUCTIONS WOULD HAVE AVOIDED THE ACFT FROM COMING SO CLOSE. SUPPLEMENTAL INFO FROM ACN 224888: AFTER DEP, ACR Y WAS ISSUED CLB TO 5000 FT. A FEW MINS LATER ACR Y WAS ISSUED A TURN AND CLB TO AVOID ACR X AT SAME ALT.

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.

TRACON intrafac coordination air carrier Y climb to occupied altitude had less than standard separation from air carrier X. System error.