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Near midair collision between a twin small transport on a VFR assigned climb out in class C airspace and another unknown VFR aircraft on an intersecting heading in level flight. Reporter took evasive action by turning away from the sighted traffic. ATC had issued a TA earlier of the same aircraft.
| Attributes | |
| ACN | 379296 |
| Time | |
| Date | 199709 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : pdx |
| State Reference | OR |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pdx |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | other other : other pilot : instrument pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 1000 |
| ASRS Report | 379296 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 750 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
I was departing the pdx airport on runway 28R, on a VFR on top clearance. Was told to turn to a heading of 240 degrees and climb and maintain 3000 ft. Out of about 1500 ft, I was told of VFR traffic at 3100 ft in my 4-5 O'clock position wbound. I saw the traffic at about 2600 ft but then lost sight of him. Upon reaching 3000 ft I was told to turn left to 180 degrees, started my turn and saw the traffic again but he was so close at my 9 O'clock position that I believed we might hit, so I did an immediate climbing right turn. I advised the controller what I was doing. He said I was turning back into his departure paths but I insisted and kept turning all the way around to 180 degrees. I climbed to about 3600 ft before I started back down and at about 120 degrees and 3300 ft the controller removed the altitude restr. The controller was busy at the time, the WX was VFR and since I advised him earlier that I had the traffic in sight, he believed I could complete the turn behind that traffic. Good assumption, but I was too close to the subject traffic in my opinion.
Original NASA ASRS Text
Title: NMAC BTWN A TWIN SMT ON A VFR ASSIGNED CLBOUT IN CLASS C AIRSPACE AND ANOTHER UNKNOWN VFR ACFT ON AN INTERSECTING HDG IN LEVEL FLT. RPTR TOOK EVASIVE ACTION BY TURNING AWAY FROM THE SIGHTED TFC. ATC HAD ISSUED A TA EARLIER OF THE SAME ACFT.
Narrative: I WAS DEPARTING THE PDX ARPT ON RWY 28R, ON A VFR ON TOP CLRNC. WAS TOLD TO TURN TO A HDG OF 240 DEGS AND CLB AND MAINTAIN 3000 FT. OUT OF ABOUT 1500 FT, I WAS TOLD OF VFR TFC AT 3100 FT IN MY 4-5 O'CLOCK POS WBOUND. I SAW THE TFC AT ABOUT 2600 FT BUT THEN LOST SIGHT OF HIM. UPON REACHING 3000 FT I WAS TOLD TO TURN L TO 180 DEGS, STARTED MY TURN AND SAW THE TFC AGAIN BUT HE WAS SO CLOSE AT MY 9 O'CLOCK POS THAT I BELIEVED WE MIGHT HIT, SO I DID AN IMMEDIATE CLBING R TURN. I ADVISED THE CTLR WHAT I WAS DOING. HE SAID I WAS TURNING BACK INTO HIS DEP PATHS BUT I INSISTED AND KEPT TURNING ALL THE WAY AROUND TO 180 DEGS. I CLBED TO ABOUT 3600 FT BEFORE I STARTED BACK DOWN AND AT ABOUT 120 DEGS AND 3300 FT THE CTLR REMOVED THE ALT RESTR. THE CTLR WAS BUSY AT THE TIME, THE WX WAS VFR AND SINCE I ADVISED HIM EARLIER THAT I HAD THE TFC IN SIGHT, HE BELIEVED I COULD COMPLETE THE TURN BEHIND THAT TFC. GOOD ASSUMPTION, BUT I WAS TOO CLOSE TO THE SUBJECT TFC IN MY OPINION.
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.