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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier X unauthorized uncoordinated penetration of airspace had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 203038 |
| Time | |
| Date | 199202 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| 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 | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 10 |
| ASRS Report | 203038 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach instruction : trainee |
| Qualification | controller : developmental |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was vectoring air carrier X for ILS 13R at dal. Traffic was light. I had air carrier X on a 250 degree heading at 2000 ft (base leg), 4-5 mi east of final. I was to begin providing OJT. As my trainee plugged in, I briefed him on the operation and explained an IFR release at an uncontrolled airport. I had momentarily been distraction and allowed air carrier X to go too far west. Air carrier X called my attention by asking if he should turn. He was converging with air carrier Y traffic 3 mi away at his altitude that was on the runway 17R ILS to dfw. I gave an immediate climb to 3000 ft and an immediate left turn to 110 to avoid the traffic. If air carrier X had not called my attention, it would have been too late for action. A better plan would have been to leave air carrier X at 3000 until turning sbound to parallel the dfw final and prevent the possibility of this situation occurring.
Original NASA ASRS Text
Title: ACR X UNAUTHORIZED UNCOORDINATED PENETRATION OF AIRSPACE HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: I WAS VECTORING ACR X FOR ILS 13R AT DAL. TFC WAS LIGHT. I HAD ACR X ON A 250 DEG HDG AT 2000 FT (BASE LEG), 4-5 MI E OF FINAL. I WAS TO BEGIN PROVIDING OJT. AS MY TRAINEE PLUGGED IN, I BRIEFED HIM ON THE OP AND EXPLAINED AN IFR RELEASE AT AN UNCTLED ARPT. I HAD MOMENTARILY BEEN DISTR AND ALLOWED ACR X TO GO TOO FAR W. ACR X CALLED MY ATTN BY ASKING IF HE SHOULD TURN. HE WAS CONVERGING WITH ACR Y TFC 3 MI AWAY AT HIS ALT THAT WAS ON THE RWY 17R ILS TO DFW. I GAVE AN IMMEDIATE CLB TO 3000 FT AND AN IMMEDIATE L TURN TO 110 TO AVOID THE TFC. IF ACR X HAD NOT CALLED MY ATTN, IT WOULD HAVE BEEN TOO LATE FOR ACTION. A BETTER PLAN WOULD HAVE BEEN TO LEAVE ACR X AT 3000 UNTIL TURNING SBOUND TO PARALLEL THE DFW FINAL AND PREVENT THE POSSIBILITY OF THIS SITUATION OCCURRING.
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.