 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
ARTCC radar controller at ZID attempted to resolve a problem between a B737 and a FA20 on conflicting courses by turning both right 15 degrees. The B737 turned left.
| Attributes | |
| ACN | 564836 |
| Time | |
| Date | 200211 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : ffo.vortac |
| State Reference | OH |
| Altitude | msl single value : 31000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Falcon 20FJF/20C/20D/20E/20F |
| 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 limited radar : 20 controller non radar : 20 controller radar : 18 controller time certified in position1 : 18 flight time total : 150 |
| ASRS Report | 564836 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 22800 vertical : 0 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Both aircraft were traffic for each other. Both were issued 15 degree turns to the right. Aircraft #1 read back '15 degrees left' when conflict became apparent, both aircraft were turned an additional 20 degrees right. Aircraft #1 then responded to TCASII RA and descended below FL310.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR AT ZID ATTEMPTED TO RESOLVE A PROB BTWN A B737 AND A FA20 ON CONFLICTING COURSES BY TURNING BOTH R 15 DEGS. THE B737 TURNED L.
Narrative: BOTH ACFT WERE TFC FOR EACH OTHER. BOTH WERE ISSUED 15 DEG TURNS TO THE R. ACFT #1 READ BACK '15 DEGS L' WHEN CONFLICT BECAME APPARENT, BOTH ACFT WERE TURNED AN ADDITIONAL 20 DEGS R. ACFT #1 THEN RESPONDED TO TCASII RA AND DSNDED BELOW FL310.
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.