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Near midair collision. Instructor pilot, acting as an first officer, in a C501SP (single pilot), took control of the aircraft during final on an ILS approach, and made a missed approach, after observing a beech V35 in a turn 400 ft below. Approach controller had given an advisory of an aircraft crossing over above their altitude, but did not expect one below them just under the cloud base.
| Attributes | |
| ACN | 409948 |
| Time | |
| Date | 199807 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ixd airport : mci |
| State Reference | MO |
| Altitude | msl bound lower : 2200 msl bound upper : 2200 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mci |
| Operator | general aviation : personal |
| Make Model Name | Citation I/SP |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Bonanza 35 |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot instruction : instructor |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 65 flight time total : 6500 flight time type : 1600 |
| ASRS Report | 409948 |
| 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 : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On ILS final, approaching 'dustt,' we were advised of VFR traffic maintaining 1900 ft MSL. The cloud bases were at 2100 ft MSL (approximately). Approach controller advised that the traffic was over the FAF (GS intercept altitude 2700 ft), eastbound, and would not be a factor. I was acting as first officer, CFI (PNF) for the newly- rated captain. At 2200 ft MSL (on GS) I spotted a beech bonanza about 300-400 ft below us, in a left turn. I assumed control and made a missed approach. The near midair collision occurred in class east airspace just outside class D airspace. The other pilot was probably not maintaining VFR cloud clearance.
Original NASA ASRS Text
Title: NMAC. INSTRUCTOR PLT, ACTING AS AN FO, IN A C501SP (SINGLE PLT), TOOK CTL OF THE ACFT DURING FINAL ON AN ILS APCH, AND MADE A MISSED APCH, AFTER OBSERVING A BEECH V35 IN A TURN 400 FT BELOW. APCH CTLR HAD GIVEN AN ADVISORY OF AN ACFT XING OVER ABOVE THEIR ALT, BUT DID NOT EXPECT ONE BELOW THEM JUST UNDER THE CLOUD BASE.
Narrative: ON ILS FINAL, APCHING 'DUSTT,' WE WERE ADVISED OF VFR TFC MAINTAINING 1900 FT MSL. THE CLOUD BASES WERE AT 2100 FT MSL (APPROX). APCH CTLR ADVISED THAT THE TFC WAS OVER THE FAF (GS INTERCEPT ALT 2700 FT), EBOUND, AND WOULD NOT BE A FACTOR. I WAS ACTING AS FO, CFI (PNF) FOR THE NEWLY- RATED CAPT. AT 2200 FT MSL (ON GS) I SPOTTED A BEECH BONANZA ABOUT 300-400 FT BELOW US, IN A L TURN. I ASSUMED CTL AND MADE A MISSED APCH. THE NMAC OCCURRED IN CLASS E AIRSPACE JUST OUTSIDE CLASS D AIRSPACE. THE OTHER PLT WAS PROBABLY NOT MAINTAINING VFR CLOUD CLRNC.
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.