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Small transport on IFR flight plan had near midair collision with small aircraft VFR on top in clear WX. No traffic advisory by ATC.
| Attributes | |
| ACN | 88088 |
| Time | |
| Date | 198805 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : btg airport : pdx |
| State Reference | OR |
| Altitude | msl bound lower : 10500 msl bound upper : 10500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pdx |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 4000 flight time type : 80 |
| ASRS Report | 88088 |
| Person 2 | |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 180 vertical : 50 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Reporter in fairly high rate of descent when he saw small aircraft pass at 12 O'clock, approximately the same altitude. Normal reaction was to pull back on control column and turn right. Aircraft passed from 3 to 9 O'clock position on crossing course. No traffic advisory given by approach controller, who, when later questioned, told reporter that the small aircraft had just been handed off to approach control approximately 1 1/2 mins before the incident and was VFR on top. FAA near miss report was filed with pdx. WX was clear and visibility unlimited between layers. Reporter flying sgl pilot IFR and says visibility from lefthand seat of small transport not good. Though he understands the see and avoid concept, he feels that this was too close and that the small aircraft would not have had a chance to see his aircraft either.
Original NASA ASRS Text
Title: SMT ON IFR FLT PLAN HAD NMAC WITH SMA VFR ON TOP IN CLEAR WX. NO TRAFFIC ADVISORY BY ATC.
Narrative: RPTR IN FAIRLY HIGH RATE OF DSCNT WHEN HE SAW SMA PASS AT 12 O'CLOCK, APPROX THE SAME ALT. NORMAL REACTION WAS TO PULL BACK ON CTL COLUMN AND TURN RIGHT. ACFT PASSED FROM 3 TO 9 O'CLOCK POS ON XING COURSE. NO TFC ADVISORY GIVEN BY APCH CTLR, WHO, WHEN LATER QUESTIONED, TOLD RPTR THAT THE SMA HAD JUST BEEN HANDED OFF TO APCH CTL APPROX 1 1/2 MINS BEFORE THE INCIDENT AND WAS VFR ON TOP. FAA NEAR MISS RPT WAS FILED WITH PDX. WX WAS CLEAR AND VIS UNLIMITED BTWN LAYERS. RPTR FLYING SGL PLT IFR AND SAYS VIS FROM LEFTHAND SEAT OF SMT NOT GOOD. THOUGH HE UNDERSTANDS THE SEE AND AVOID CONCEPT, HE FEELS THAT THIS WAS TOO CLOSE AND THAT THE SMA WOULD NOT HAVE HAD A CHANCE TO SEE HIS ACFT EITHER.
Data retrieved from NASA's ASRS site as of August 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.