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Near midair collision reported and evasive turn made to avoid traffic. Approach control reported traffic not painted (on the radar). Flight crew reported no TCASII visual or aural alert.
| Attributes | |
| ACN | 341902 |
| Time | |
| Date | 199607 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pdx |
| State Reference | OR |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pdx |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : private pilot : instrument pilot : flight engineer pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 15800 flight time type : 6000 |
| ASRS Report | 341902 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 2000 |
| ASRS Report | 342192 |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 1800 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On arrival into pdx, experienced a near miss with an unidented aircraft. We were level at 10000 ft MSL, 250 KTS, on a 320 degree vector from approach control when I observed aircraft at 10 O'clock position, at our altitude, less than 1/4 mi. Initiated an immediate right turn. Notified ATC of evasive action. Approach control stated he did not paint the aircraft in question. TCASII provided no visual or aural alert. Landed uneventfully and notified ATC near midair collision report would be filed.
Original NASA ASRS Text
Title: NMAC RPTED AND EVASIVE TURN MADE TO AVOID TFC. APCH CTL RPTED TFC NOT PAINTED (ON THE RADAR). FLC RPTED NO TCASII VISUAL OR AURAL ALERT.
Narrative: ON ARR INTO PDX, EXPERIENCED A NEAR MISS WITH AN UNIDENTED ACFT. WE WERE LEVEL AT 10000 FT MSL, 250 KTS, ON A 320 DEG VECTOR FROM APCH CTL WHEN I OBSERVED ACFT AT 10 O'CLOCK POS, AT OUR ALT, LESS THAN 1/4 MI. INITIATED AN IMMEDIATE R TURN. NOTIFIED ATC OF EVASIVE ACTION. APCH CTL STATED HE DID NOT PAINT THE ACFT IN QUESTION. TCASII PROVIDED NO VISUAL OR AURAL ALERT. LANDED UNEVENTFULLY AND NOTIFIED ATC NMAC RPT WOULD BE FILED.
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.