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Less than standard separation occurred when an aircraft climbing to FL230 conflicted with an opposite direction aircraft at FL220.
| Attributes | |
| ACN | 161180 |
| Time | |
| Date | 199010 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : jnc |
| State Reference | CO |
| Altitude | msl bound lower : 21500 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : j130 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : instrument pilot : commercial |
| Experience | flight time total : 2100 |
| ASRS Report | 161180 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 6000 flight time type : 1200 |
| ASRS Report | 161376 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We received the following clearance from grand junction ground: cleared to den as filed, J130, climb and maintain FL230, squawk XXXX, contact ZDV on 127.8 leaving 9000'. At approximately 21500' center asked us what altitude we were at. We said 21500'. He said, 'confirm FL210 as you altitude.' we said we were assigned FL230. Center told us to descend to FL210, turn left 360 degrees; traffic 3-4 mi, at 11-12 O'clock, at FL220. He turned the other traffic to a heading of 180 degrees. In 1 min or so, center turned U to 090 des to intercept the den 213 degree right.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARATION OCCURRED WHEN AN ACFT CLIMBING TO FL230 CONFLICTED WITH AN OPPOSITE DIRECTION ACFT AT FL220.
Narrative: WE RECEIVED THE FOLLOWING CLRNC FROM GRAND JUNCTION GND: CLRED TO DEN AS FILED, J130, CLB AND MAINTAIN FL230, SQUAWK XXXX, CONTACT ZDV ON 127.8 LEAVING 9000'. AT APPROX 21500' CENTER ASKED US WHAT ALT WE WERE AT. WE SAID 21500'. HE SAID, 'CONFIRM FL210 AS YOU ALT.' WE SAID WE WERE ASSIGNED FL230. CENTER TOLD US TO DSND TO FL210, TURN LEFT 360 DEGS; TFC 3-4 MI, AT 11-12 O'CLOCK, AT FL220. HE TURNED THE OTHER TFC TO A HDG OF 180 DEGS. IN 1 MIN OR SO, CENTER TURNED U TO 090 DES TO INTERCEPT THE DEN 213 DEG R.
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.