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Small aircraft entered the air traffic area without authorization and conflicted with an aircraft on ILS approach.
| Attributes | |
| ACN | 140326 |
| Time | |
| Date | 199003 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dpa |
| State Reference | IL |
| Altitude | msl bound lower : 1500 msl bound upper : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dpa |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | landing other |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller military : 2 controller radar : 3 |
| ASRS Report | 140326 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : nmac non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 150 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Small aircraft X inbound from the west called after transiting air traffic area from the west. The initial call was inside air traffic area. As soon as small aircraft X called he was issued small aircraft Y traffic inbound on the ILS approach in VFR conditions. At that time small aircraft Y reported the river (3 mi final) with small aircraft X traffic in sight. Apparently small aircraft X traffic was descending on top of small aircraft Y. Both aircraft came within 150' of each other according to the small aircraft Y. A pilot deviation is being filed for entering of the air traffic area and as far as I know, not for the near miss as of now.
Original NASA ASRS Text
Title: SMA ENTERED THE ATA WITHOUT AUTHORIZATION AND CONFLICTED WITH AN ACFT ON ILS APCH.
Narrative: SMA X INBND FROM THE W CALLED AFTER TRANSITING ATA FROM THE W. THE INITIAL CALL WAS INSIDE ATA. AS SOON AS SMA X CALLED HE WAS ISSUED SMA Y TFC INBND ON THE ILS APCH IN VFR CONDITIONS. AT THAT TIME SMA Y REPORTED THE RIVER (3 MI FINAL) WITH SMA X TFC IN SIGHT. APPARENTLY SMA X TFC WAS DESCENDING ON TOP OF SMA Y. BOTH ACFT CAME WITHIN 150' OF EACH OTHER ACCORDING TO THE SMA Y. A PLT DEVIATION IS BEING FILED FOR ENTERING OF THE ATA AND AS FAR AS I KNOW, NOT FOR THE NEAR MISS AS OF NOW.
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.