 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
ZID controller experienced operational error at approximately FL210 when descending traffic through occupied altitude.
| Attributes | |
| ACN | 680894 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : loz.vortac |
| State Reference | KY |
| Altitude | msl single value : 21400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 170/175 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Dassault-Breguet Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : non radar controller : radar |
| Experience | controller non radar : 3 controller radar : 21 controller time certified in position1 : 20 controller time certified in position2 : 6 |
| ASRS Report | 680894 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 19800 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was traffic for aircraft Y. Aircraft Y was stopped underneath air carrier X. Called traffic to each and air carrier X had aircraft Y in sight. Thought I needed to descend air carrier X to allow aircraft Y to climb. Don't know why I thought that. Descended air carrier X to lower altitude putting him in conflict with aircraft Y.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT APPROX FL210 WHEN DSNDING TFC THROUGH OCCUPIED ALT.
Narrative: ACR X WAS TFC FOR ACFT Y. ACFT Y WAS STOPPED UNDERNEATH ACR X. CALLED TFC TO EACH AND ACR X HAD ACFT Y IN SIGHT. THOUGHT I NEEDED TO DSND ACR X TO ALLOW ACFT Y TO CLB. DON'T KNOW WHY I THOUGHT THAT. DSNDED ACR X TO LOWER ALT PUTTING HIM IN CONFLICT WITH ACFT Y.
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.