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Iad supervisor controller described conflict when aircraft inbound to runway 1R missed turn on; conflicting with air carrier on ILS runway 1C.
| Attributes | |
| ACN | 789545 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : iad.airport |
| State Reference | VA |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : iad.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 1c |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : pct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : supervisor |
| Qualification | controller : radar |
| Experience | controller limited radar : 4 controller non radar : 3 controller radar : 10 controller time certified in position1 : 17 |
| ASRS Report | 789545 |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert flight crew : took evasive action |
| Miss Distance | horizontal : 2000 vertical : 200 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
I was working controller in charge. I observed air carrier X; an airbus 320; on the ILS approach to runway 1C. I observed air carrier Y; a saab 340; on the base leg to runway 1R. 2 local control position were active in the tower. Air carrier Y passed the final for runway 1R and came near air carrier X. Local control east was unable to advise air carrier Y of the situation because; although he was in local east airspace; potomac consolidated TRACON (pct) did not switch air carrier Y to the tower. As air carrier Y continued to encroach upon air carrier X; local control west advised air carrier X to use evasive maneuvers to avoid air carrier Y. Air carrier X then advised the tower that air carrier X was in sight. I informed the pct supervisor of the situation.
Original NASA ASRS Text
Title: IAD SUPVR CTLR DESCRIBED CONFLICT WHEN ACFT INBOUND TO RWY 1R MISSED TURN ON; CONFLICTING WITH ACR ON ILS RWY 1C.
Narrative: I WAS WORKING CIC. I OBSERVED ACR X; AN AIRBUS 320; ON THE ILS APCH TO RWY 1C. I OBSERVED ACR Y; A SAAB 340; ON THE BASE LEG TO RWY 1R. 2 LCL CTL POS WERE ACTIVE IN THE TWR. ACR Y PASSED THE FINAL FOR RWY 1R AND CAME NEAR ACR X. LCL CTL E WAS UNABLE TO ADVISE ACR Y OF THE SITUATION BECAUSE; ALTHOUGH HE WAS IN LCL E AIRSPACE; POTOMAC CONSOLIDATED TRACON (PCT) DID NOT SWITCH ACR Y TO THE TWR. AS ACR Y CONTINUED TO ENCROACH UPON ACR X; LCL CTL W ADVISED ACR X TO USE EVASIVE MANEUVERS TO AVOID ACR Y. ACR X THEN ADVISED THE TWR THAT ACR X WAS IN SIGHT. I INFORMED THE PCT SUPVR OF THE SITUATION.
Data retrieved from NASA's ASRS site as of May 2009 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.