 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
ZID radar controller overlooks traffic on converging courses and descends a northbound erj-145 into the path of a sbound DC10.
| Attributes | |
| ACN | 603213 |
| Time | |
| Date | 200312 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pxv.vortac |
| State Reference | IN |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tower : abq.tower |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 14 controller time certified in position1 : 14 |
| ASRS Report | 603213 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar |
| Experience | controller radar : 1.33 |
| ASRS Report | 603301 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar/mode c other controllera other controllerb |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21000 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft Y was sbound at FL350, pxv.WLDER5.mem. Aircraft Y was handed off and shipped to ZME approximately 10 mi north of pxv. Aircraft X, inbound to cmh at FL370, had multiple traffic ahead at FL370 and so was descended to FL350, overlooking aircraft Y as traffic. Upon realizing aircraft Y and aircraft X would be close, aircraft X was expedited to FL330 and turned 50 degrees right. Separation was lost. Supplemental information from acn 603301: northbound aircraft was descended from FL370 to FL350, putting it in conflict with sbound FL350 traffic. 50 degree right turn and descent to FL330 was issued to northbound aircraft. Sbound FL350 traffic was turned 30 degrees right.
Original NASA ASRS Text
Title: ZID RADAR CTLR OVERLOOKS TFC ON CONVERGING COURSES AND DSNDS A NBOUND ERJ-145 INTO THE PATH OF A SBOUND DC10.
Narrative: ACFT Y WAS SBOUND AT FL350, PXV.WLDER5.MEM. ACFT Y WAS HANDED OFF AND SHIPPED TO ZME APPROX 10 MI N OF PXV. ACFT X, INBOUND TO CMH AT FL370, HAD MULTIPLE TFC AHEAD AT FL370 AND SO WAS DSNDED TO FL350, OVERLOOKING ACFT Y AS TFC. UPON REALIZING ACFT Y AND ACFT X WOULD BE CLOSE, ACFT X WAS EXPEDITED TO FL330 AND TURNED 50 DEGS R. SEPARATION WAS LOST. SUPPLEMENTAL INFO FROM ACN 603301: NBOUND ACFT WAS DSNDED FROM FL370 TO FL350, PUTTING IT IN CONFLICT WITH SBOUND FL350 TFC. 50 DEG R TURN AND DSCNT TO FL330 WAS ISSUED TO NBOUND ACFT. SBOUND FL350 TFC WAS TURNED 30 DEGS R.
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.