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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 | 252158 |
| Time | |
| Date | 199309 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : jhw |
| State Reference | NY |
| Altitude | msl bound lower : 35000 msl bound upper : 36500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| 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 non radar : 2 controller radar : 4 |
| ASRS Report | 252158 |
| 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 : clearance non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 1500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X came on frequency and I had air carrier Y that was wbound at FL350. Air carrier X was leaving FL290 for his assigned altitude of FL370 eastbound. About this time I realized air carrier X might be a factor for air carrier Y and wanted to insure separation by making sure air carrier X reached FL370 before they became a factor. At that point I issued a rate of climb clearance to air carrier X that would insure separation. He acknowledged the clearance in the affirmative and did not follow through with it.
Original NASA ASRS Text
Title: ACR X CLB THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: ACR X CAME ON FREQ AND I HAD ACR Y THAT WAS WBOUND AT FL350. ACR X WAS LEAVING FL290 FOR HIS ASSIGNED ALT OF FL370 EBOUND. ABOUT THIS TIME I REALIZED ACR X MIGHT BE A FACTOR FOR ACR Y AND WANTED TO INSURE SEPARATION BY MAKING SURE ACR X REACHED FL370 BEFORE THEY BECAME A FACTOR. AT THAT POINT I ISSUED A RATE OF CLB CLRNC TO ACR X THAT WOULD INSURE SEPARATION. HE ACKNOWLEDGED THE CLRNC IN THE AFFIRMATIVE AND DID NOT FOLLOW THROUGH WITH IT.
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.