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Light transport was descended through an altitude occupied by another aircraft.
| Attributes | |
| ACN | 114001 |
| Time | |
| Date | 198906 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ind |
| State Reference | IN |
| Altitude | msl bound lower : 9000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ind |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air taxi |
| Make Model Name | Small Transport |
| 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 | 114001 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Intra Facility Coordination Failure |
Narrative:
Working approach at indy during an inbound rush. Had 5 aircraft over clang (inbound fix) which distracted me from other aircraft. About this time I took a handoff on an light transport over jells (inbound fix). Departure west handed off 2 aircraft 20 mi west of airport and point traffic out reference the handoffs at 9000. As soon as the light transport was 30 mi from the airport I descended him to 10,000 and turned him toward the airport. I was imperative I descend the light transport as soon as possible because 2 of the aircraft at clang were landing I14. These aircraft were mixed in with arrival traffic to indy at 11,000 and had been handed off to the wrong departure controller and sent to my frequency. I noticed 9000' traffic northbound and as soon as the small transport was at his 12 O'clock eastbound I descended the light transport. Pilot of the small transport made a comment to the departure controller the light transport looked too close. Courses were diverging.
Original NASA ASRS Text
Title: LTT WAS DESCENDED THROUGH AN ALT OCCUPIED BY ANOTHER ACFT.
Narrative: WORKING APCH AT INDY DURING AN INBOUND RUSH. HAD 5 ACFT OVER CLANG (INBOUND FIX) WHICH DISTRACTED ME FROM OTHER ACFT. ABOUT THIS TIME I TOOK A HANDOFF ON AN LTT OVER JELLS (INBOUND FIX). DEP WEST HANDED OFF 2 ACFT 20 MI W OF ARPT AND POINT TFC OUT REF THE HANDOFFS AT 9000. AS SOON AS THE LTT WAS 30 MI FROM THE ARPT I DESCENDED HIM TO 10,000 AND TURNED HIM TOWARD THE ARPT. I WAS IMPERATIVE I DSND THE LTT AS SOON AS POSSIBLE BECAUSE 2 OF THE ACFT AT CLANG WERE LNDG I14. THESE ACFT WERE MIXED IN WITH ARR TFC TO INDY AT 11,000 AND HAD BEEN HANDED OFF TO THE WRONG DEP CTLR AND SENT TO MY FREQ. I NOTICED 9000' TFC NBOUND AND AS SOON AS THE SMT WAS AT HIS 12 O'CLOCK EBND I DESCENDED THE LTT. PLT OF THE SMT MADE A COMMENT TO THE DEP CTLR THE LTT LOOKED TOO CLOSE. COURSES WERE DIVERGING.
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.