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Less than standard separtion between small aircraft departure climbing and medium large transport arrival descending in non radar environment.
| Attributes | |
| ACN | 172922 |
| Time | |
| Date | 199103 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : meo |
| State Reference | MO |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cou |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Retractable Gear |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | Military Transport |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : non radar |
| ASRS Report | 172922 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 24000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I released a departure off jef to the southeast, climbing to 5000'. I had an inbound from the west cleared to meo I wasn't talking to yet. I saw the situation but anticipated the departure to climb out of any conflict. The inbound came on my frequency within 10 mi from meo. I descended him to 4000' then checked altitude of the departure, he wasn't climbing as I anticipated. I gave the departure an immediate turn to heading 180 degree which the pilot responded to quickly. A loss of IFR sep occurred. I was working moderate to heavy traffic all morning and hit a lull in the traffic causing me to lose some awareness. In the future headings and altitudes will be used to insure sep, also will keep a picture of what is happening and what will happen.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARTION BETWEEN SMA DEPARTURE CLIMBING AND MLG ARR DESCENDING IN NON RADAR ENVIRONMENT.
Narrative: I RELEASED A DEP OFF JEF TO THE SE, CLBING TO 5000'. I HAD AN INBND FROM THE W CLRED TO MEO I WASN'T TALKING TO YET. I SAW THE SITUATION BUT ANTICIPATED THE DEP TO CLB OUT OF ANY CONFLICT. THE INBND CAME ON MY FREQ WITHIN 10 MI FROM MEO. I DSNDED HIM TO 4000' THEN CHKED ALT OF THE DEP, HE WASN'T CLBING AS I ANTICIPATED. I GAVE THE DEP AN IMMEDIATE TURN TO HDG 180 DEG WHICH THE PLT RESPONDED TO QUICKLY. A LOSS OF IFR SEP OCCURRED. I WAS WORKING MODERATE TO HVY TFC ALL MORNING AND HIT A LULL IN THE TFC CAUSING ME TO LOSE SOME AWARENESS. IN THE FUTURE HDGS AND ALTS WILL BE USED TO INSURE SEP, ALSO WILL KEEP A PICTURE OF WHAT IS HAPPENING AND WHAT WILL HAPPEN.
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.