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Pilot of a traffic watch small aircraft sel took evasive action by descending and turning to avoid a potential head-on collision with a cessna citation making a base leg for landing. The usual traffic pattern was altered due to approximately 20 hot air balloons in the immediate area.
| Attributes | |
| ACN | 372384 |
| Time | |
| Date | 199706 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : boi |
| State Reference | ID |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : boi artcc : zoa |
| Operator | general aviation : instructional |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | Cessna Citation Undifferentiated or Other Model |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent : approach other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | other other : other pilot : instrument pilot : cfi pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 250 flight time total : 1670 flight time type : 200 |
| ASRS Report | 372384 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 75 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
While conducting traffic watch I was given traffic at 12 O'clock descending, cessna citation. He was within 1/2 - 1/4 mi leveling off at my altitude, head-on. I promptly nosed down and executed a 180 degree turn. The citation turned a base within 100-300 ft of me. Factor contributing was 20+ hot air balloons over city distracting the pilot and interrupting the normal traffic pattern which keeps the traffic wide and above 4500 ft MSL while traffic watch operation was being conducted. I do not believe the cessna pilot ever saw me nor made any evasive action.
Original NASA ASRS Text
Title: PLT OF A TFC WATCH SMA SEL TOOK EVASIVE ACTION BY DSNDING AND TURNING TO AVOID A POTENTIAL HEAD-ON COLLISION WITH A CESSNA CITATION MAKING A BASE LEG FOR LNDG. THE USUAL TFC PATTERN WAS ALTERED DUE TO APPROX 20 HOT AIR BALLOONS IN THE IMMEDIATE AREA.
Narrative: WHILE CONDUCTING TFC WATCH I WAS GIVEN TFC AT 12 O'CLOCK DSNDING, CESSNA CITATION. HE WAS WITHIN 1/2 - 1/4 MI LEVELING OFF AT MY ALT, HEAD-ON. I PROMPTLY NOSED DOWN AND EXECUTED A 180 DEG TURN. THE CITATION TURNED A BASE WITHIN 100-300 FT OF ME. FACTOR CONTRIBUTING WAS 20+ HOT AIR BALLOONS OVER CITY DISTRACTING THE PLT AND INTERRUPTING THE NORMAL TFC PATTERN WHICH KEEPS THE TFC WIDE AND ABOVE 4500 FT MSL WHILE TFC WATCH OP WAS BEING CONDUCTED. I DO NOT BELIEVE THE CESSNA PLT EVER SAW ME NOR MADE ANY EVASIVE ACTION.
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.