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Light single engine aircraft conducting instrument training at an uncontrolled airport has a near miss with a light twin that is not using standard and safe procedure.
| Attributes | |
| ACN | 115661 |
| Time | |
| Date | 198906 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dto |
| State Reference | TX |
| Altitude | agl bound lower : 500 agl bound upper : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air taxi |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, Low Wing, 2 Eng, Retractable Gear |
| Flight Phase | descent : approach landing other other |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot instruction : instructor |
| Qualification | pilot : atp pilot : cfi pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 225 flight time total : 6500 flight time type : 500 |
| ASRS Report | 115661 |
| Person 2 | |
| Affiliation | Other |
| Function | instruction : trainee |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : nmac other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | vertical : 50 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During a training session conducting multiple apches at denton municipal, we small aircraft X, heard small aircraft Y (a twin engine), call on a 45 for downwind runway 17 after we had passed and called procedure turn inbound for ILS 17. We then passed and called final approach fix inbound on unicom, and the small aircraft Y had once again called on downwind runway 12. At this point I called the small aircraft Y on unicom frequency and advised him that we were on a 3 mi final. He advised that he would look for us. We had on strobes, beacon and landing lights. I could not find him visually and assumed that he had fallen in behind us in the pattern. On a 1 mi final the small aircraft Y passed over the top of us at about 50' in an unstable s-turning final approach and landed while we executed a missed approach. This was a case of high wing, low wing blindness, coupled with a lack of sound airmanship on the part of the small aircraft Y pilot. We were lower and on final and had the unquestionable right of way.
Original NASA ASRS Text
Title: LIGHT SINGLE ENGINE ACFT CONDUCTING INSTRUMENT TRAINING AT AN UNCONTROLLED ARPT HAS A NEAR MISS WITH A LIGHT TWIN THAT IS NOT USING STANDARD AND SAFE PROC.
Narrative: DURING A TRAINING SESSION CONDUCTING MULTIPLE APCHES AT DENTON MUNI, WE SMA X, HEARD SMA Y (A TWIN ENGINE), CALL ON A 45 FOR DOWNWIND RWY 17 AFTER WE HAD PASSED AND CALLED PROC TURN INBND FOR ILS 17. WE THEN PASSED AND CALLED FINAL APCH FIX INBND ON UNICOM, AND THE SMA Y HAD ONCE AGAIN CALLED ON DOWNWIND RWY 12. AT THIS POINT I CALLED THE SMA Y ON UNICOM FREQ AND ADVISED HIM THAT WE WERE ON A 3 MI FINAL. HE ADVISED THAT HE WOULD LOOK FOR US. WE HAD ON STROBES, BEACON AND LNDG LIGHTS. I COULD NOT FIND HIM VISUALLY AND ASSUMED THAT HE HAD FALLEN IN BEHIND US IN THE PATTERN. ON A 1 MI FINAL THE SMA Y PASSED OVER THE TOP OF US AT ABOUT 50' IN AN UNSTABLE S-TURNING FINAL APCH AND LANDED WHILE WE EXECUTED A MISSED APCH. THIS WAS A CASE OF HIGH WING, LOW WING BLINDNESS, COUPLED WITH A LACK OF SOUND AIRMANSHIP ON THE PART OF THE SMA Y PLT. WE WERE LOWER AND ON FINAL AND HAD THE UNQUESTIONABLE RIGHT OF WAY.
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.