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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier X climb through occupied altitude had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 241511 |
| Time | |
| Date | 199305 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mol |
| State Reference | VA |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 23 |
| ASRS Report | 241511 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27600 vertical : 1100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X at FL280 requested FL350 in close proximity to air carrier Y at FL310. Air carrier X was vectored west and climbed to FL330. Air carrier X was given direct mol when he was northwest of air carrier Y. When I noticed him cutting back harder than anticipated, I issued a vector to the right to air carrier X and a vector to the left for air carrier Y prior to conflict alert. Separation was still lost.
Original NASA ASRS Text
Title: ACR X CLB THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: ACR X AT FL280 REQUESTED FL350 IN CLOSE PROX TO ACR Y AT FL310. ACR X WAS VECTORED W AND CLBED TO FL330. ACR X WAS GIVEN DIRECT MOL WHEN HE WAS NW OF ACR Y. WHEN I NOTICED HIM CUTTING BACK HARDER THAN ANTICIPATED, I ISSUED A VECTOR TO THE R TO ACR X AND A VECTOR TO THE L FOR ACR Y PRIOR TO CONFLICT ALERT. SEPARATION WAS STILL LOST.
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.