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Anc local controller is forced to utilize visual separation with edf heavy arrival absent required departure release from A11 TRACON.
| Attributes | |
| ACN | 750612 |
| Time | |
| Date | 200708 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : anc.airport |
| State Reference | AK |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : anc.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : a11.tracon |
| Operator | other |
| Make Model Name | Galaxy (C5A) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local controller : ground |
| Qualification | controller : radar |
| Experience | controller military : 11 controller radar : 7 |
| ASRS Report | 750612 |
| Events | |
| Anomaly | airspace violation : entry non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
Narrative:
I had obtained 2 releases for departures off of runway 32 from anchorage approach (A11). I departed a B737; whom I believed to be the second of the 2 releases. I scanned the departure corridor and saw the C5 on final approach to elmendorf AFB (edf) at the same time approach (A11) called on the direct shout line. Approach believed the B737 to be the third departure; and not released. I turned the B737 to 270 degrees and established visual separation and issued wake turbulence caution advisory minimum radar separation did not appear to be lost and the B737 was maintaining visual separation with the C5. Just prior to and up to the time that I may have departed without a release and conflicting traffic I was working local control (local control) and ground control (ground control) combined. Just prior I had to request ground control be decombined due to traffic/frequency congestion. Ground control was opened and I was left with local control stand alone. At about the same time I departed the B737.
Original NASA ASRS Text
Title: ANC LCL CTLR IS FORCED TO UTILIZE VISUAL SEPARATION WITH EDF HVY ARR ABSENT REQUIRED DEP RELEASE FROM A11 TRACON.
Narrative: I HAD OBTAINED 2 RELEASES FOR DEPS OFF OF RWY 32 FROM ANCHORAGE APCH (A11). I DEPARTED A B737; WHOM I BELIEVED TO BE THE SECOND OF THE 2 RELEASES. I SCANNED THE DEP CORRIDOR AND SAW THE C5 ON FINAL APCH TO ELMENDORF AFB (EDF) AT THE SAME TIME APCH (A11) CALLED ON THE DIRECT SHOUT LINE. APCH BELIEVED THE B737 TO BE THE THIRD DEP; AND NOT RELEASED. I TURNED THE B737 TO 270 DEGS AND ESTABLISHED VISUAL SEPARATION AND ISSUED WAKE TURB CAUTION ADVISORY MINIMUM RADAR SEPARATION DID NOT APPEAR TO BE LOST AND THE B737 WAS MAINTAINING VISUAL SEPARATION WITH THE C5. JUST PRIOR TO AND UP TO THE TIME THAT I MAY HAVE DEPARTED WITHOUT A RELEASE AND CONFLICTING TFC I WAS WORKING LCL CTL (LC) AND GND CTL (GC) COMBINED. JUST PRIOR I HAD TO REQUEST GND CTL BE DECOMBINED DUE TO TFC/FREQ CONGESTION. GND CTL WAS OPENED AND I WAS LEFT WITH LCL CTL STAND ALONE. AT ABOUT THE SAME TIME I DEPARTED THE B737.
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.