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Small aircraft and light transport have near midair collision when landing on runways intersecting at the thresholds.
| Attributes | |
| ACN | 257415 |
| Time | |
| Date | 199311 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mhe |
| State Reference | SD |
| Altitude | msl bound lower : 1300 msl bound upper : 1300 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Dawn |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft |
| Flight Phase | landing other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 15000 flight time type : 4000 |
| ASRS Report | 257415 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : ground critical conflict : nmac other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 2000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
The basic problem was 2 aircraft landing at an uncontrolled airport with marginal WX conditions and 1 aircraft IFR and the other aircraft VFR. The VFR aircraft, which I was flying, did not have FAA radio communication capability. I did have radio communication with my office personnel via a business band radio. It's a 5 min flight from my airstrip to the mitchell airport. Upon departure from my private airstrip, my office personnel contacted mitchell AWOS and the WX was reported to be 1000 ft ceiling and 4 mi visibility. This information was relayed to me at XX50 hours. Upon arrival at the mitchell airport, the rotating beacon was not operational indicating VFR conditions did exist. I entered the traffic pattern and landed on the threshold of runway 35 at approximately XX55 hours. Upon rollout, an light transport landed on runway 30. Both aircraft landed on the airport at the same time. The light transport made an instrument approach to runway 30 and I made a visual approach to runway 35. It's the age-old problem of 1 aircraft VFR and 1 aircraft IFR. The IFR aircraft is depending on separation by radio and the VFR aircraft is depending on visual separation. Marginal WX conditions contribute to these sits. At XY05, I called mitchell AWOS by mobile telephone and the WX was reported as 1100 ft ceiling and 3 mi visibility. One has to be extremely vigilant when landing at an airport under marginal conditions when the visibility and ceiling permit VFR landing and, at the same time, aircraft are making instrument approachs.
Original NASA ASRS Text
Title: SMA AND LTT HAVE NMAC WHEN LNDG ON RWYS INTERSECTING AT THE THRESHOLDS.
Narrative: THE BASIC PROB WAS 2 ACFT LNDG AT AN UNCTLED ARPT WITH MARGINAL WX CONDITIONS AND 1 ACFT IFR AND THE OTHER ACFT VFR. THE VFR ACFT, WHICH I WAS FLYING, DID NOT HAVE FAA RADIO COM CAPABILITY. I DID HAVE RADIO COM WITH MY OFFICE PERSONNEL VIA A BUSINESS BAND RADIO. IT'S A 5 MIN FLT FROM MY AIRSTRIP TO THE MITCHELL ARPT. UPON DEP FROM MY PVT AIRSTRIP, MY OFFICE PERSONNEL CONTACTED MITCHELL AWOS AND THE WX WAS RPTED TO BE 1000 FT CEILING AND 4 MI VISIBILITY. THIS INFO WAS RELAYED TO ME AT XX50 HRS. UPON ARR AT THE MITCHELL ARPT, THE ROTATING BEACON WAS NOT OPERATIONAL INDICATING VFR CONDITIONS DID EXIST. I ENTERED THE TFC PATTERN AND LANDED ON THE THRESHOLD OF RWY 35 AT APPROX XX55 HRS. UPON ROLLOUT, AN LTT LANDED ON RWY 30. BOTH ACFT LANDED ON THE ARPT AT THE SAME TIME. THE LTT MADE AN INST APCH TO RWY 30 AND I MADE A VISUAL APCH TO RWY 35. IT'S THE AGE-OLD PROB OF 1 ACFT VFR AND 1 ACFT IFR. THE IFR ACFT IS DEPENDING ON SEPARATION BY RADIO AND THE VFR ACFT IS DEPENDING ON VISUAL SEPARATION. MARGINAL WX CONDITIONS CONTRIBUTE TO THESE SITS. AT XY05, I CALLED MITCHELL AWOS BY MOBILE TELEPHONE AND THE WX WAS RPTED AS 1100 FT CEILING AND 3 MI VISIBILITY. ONE HAS TO BE EXTREMELY VIGILANT WHEN LNDG AT AN ARPT UNDER MARGINAL CONDITIONS WHEN THE VISIBILITY AND CEILING PERMIT VFR LNDG AND, AT THE SAME TIME, ACFT ARE MAKING INST APCHS.
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.