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Prc controller described conflict with departure and pattern traffic citing equipment transitioning issues as contributory.
| Attributes | |
| ACN | 729997 |
| Time | |
| Date | 200702 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : prc.airport |
| State Reference | AZ |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : prc.tower |
| Operator | general aviation : instructional |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | approach : traffic pattern |
| Flight Plan | VFR |
| Aircraft 2 | |
| Controlling Facilities | tower : prc.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-24 Comanche |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller limited radar : 3 controller non radar : 14 controller time certified in position1 : 17 |
| ASRS Report | 729997 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
We are transitioning to stars from satds. At the local control #1 position it is satd and at the local control #2 position stars. Our local flight schools have assigned codes which tag up on the stars but not the satds which is very confusing. 2 local aircraft (ARTS IIIE) called in from the same area at the same time. I was at local #1 using satds system and neither aircraft tagged up. I gave traffic about each other and entry instructions. One aircraft (aircraft Z) appeared to have an instructor on board; the other aircraft (aircraft X) appeared to be a solo student. Both aircraft were given left traffic to runway 30. One of the aircraft which turned out to be aircraft X maneuvered incorrectly ending up opposite direction to the upwind of runway 30. I issued traffic and amended his entry instructions. When he didn't appear to correct; I gave him additional instructions to report inbound from chino valley for a right 45 degree entry to runway 30. I also gave him more traffic about departing aircraft. I depart aircraft Y to the north and gave him traffic about the inbound air carrier. As I was getting relieved and giving the relief briefing; I issued more traffic to aircraft Y and aircraft X. Aircraft Y reported traffic in sight stating he just flew by me. Aircraft X reported traffic in sight that the aircraft flew under him. The relieving controller then said 'welcome to the VFR environment' or something to that effect. At that time I was the only cpc on the shift.
Original NASA ASRS Text
Title: PRC CTLR DESCRIBED CONFLICT WITH DEP AND PATTERN TFC CITING EQUIP TRANSITIONING ISSUES AS CONTRIBUTORY.
Narrative: WE ARE TRANSITIONING TO STARS FROM SATDS. AT THE LCL CTL #1 POS IT IS SATD AND AT THE LCL CTL #2 POS STARS. OUR LCL FLT SCHOOLS HAVE ASSIGNED CODES WHICH TAG UP ON THE STARS BUT NOT THE SATDS WHICH IS VERY CONFUSING. 2 LCL ACFT (ARTS IIIE) CALLED IN FROM THE SAME AREA AT THE SAME TIME. I WAS AT LCL #1 USING SATDS SYS AND NEITHER ACFT TAGGED UP. I GAVE TFC ABOUT EACH OTHER AND ENTRY INSTRUCTIONS. ONE ACFT (ACFT Z) APPEARED TO HAVE AN INSTRUCTOR ON BOARD; THE OTHER ACFT (ACFT X) APPEARED TO BE A SOLO STUDENT. BOTH ACFT WERE GIVEN L TFC TO RWY 30. ONE OF THE ACFT WHICH TURNED OUT TO BE ACFT X MANEUVERED INCORRECTLY ENDING UP OPPOSITE DIRECTION TO THE UPWIND OF RWY 30. I ISSUED TFC AND AMENDED HIS ENTRY INSTRUCTIONS. WHEN HE DIDN'T APPEAR TO CORRECT; I GAVE HIM ADDITIONAL INSTRUCTIONS TO RPT INBOUND FROM CHINO VALLEY FOR A R 45 DEG ENTRY TO RWY 30. I ALSO GAVE HIM MORE TFC ABOUT DEPARTING ACFT. I DEPART ACFT Y TO THE N AND GAVE HIM TFC ABOUT THE INBOUND ACR. AS I WAS GETTING RELIEVED AND GIVING THE RELIEF BRIEFING; I ISSUED MORE TFC TO ACFT Y AND ACFT X. ACFT Y RPTED TFC IN SIGHT STATING HE JUST FLEW BY ME. ACFT X RPTED TFC IN SIGHT THAT THE ACFT FLEW UNDER HIM. THE RELIEVING CTLR THEN SAID 'WELCOME TO THE VFR ENVIRONMENT' OR SOMETHING TO THAT EFFECT. AT THAT TIME I WAS THE ONLY CPC ON THE SHIFT.
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.