 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
ZAU controller experienced operational error at FL290. Controller was late in recognizing the developing loss of separation.
| Attributes | |
| ACN | 678040 |
| Time | |
| Date | 200511 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : pmm.vor |
| State Reference | MI |
| Altitude | msl single value : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 23 |
| ASRS Report | 678040 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25200 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was at FL290 with aircraft #2 in a descent to FL230 landing ord. When I noticed the situation; I turned aircraft #2 to a 330 degree heading and amended the altitude to FL300. Aircraft #2 said he would climb back to FL300 and turn to a 330 degree heading. Aircraft came within 5 mi and less than 1000 ft separation.
Original NASA ASRS Text
Title: ZAU CTLR EXPERIENCED OPERROR AT FL290. CTLR WAS LATE IN RECOGNIZING THE DEVELOPING LOSS OF SEPARATION.
Narrative: ACFT #1 WAS AT FL290 WITH ACFT #2 IN A DSCNT TO FL230 LNDG ORD. WHEN I NOTICED THE SITUATION; I TURNED ACFT #2 TO A 330 DEG HDG AND AMENDED THE ALT TO FL300. ACFT #2 SAID HE WOULD CLB BACK TO FL300 AND TURN TO A 330 DEG HDG. ACFT CAME WITHIN 5 MI AND LESS THAN 1000 FT SEPARATION.
Data retrieved from NASA's ASRS site as of January 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.