<< >> NASA ASRS Report 536262, January 2002

Hawker 125-800 FAA flight check aircraft had near midair collision with another aircraft while making a low approach over an uncontrolled airport. They were monitoring and transmitting their position over unicom frequency, but heard nothing from the other aircraft who was just taking off.

Attributes
ACN	536262
Time
Date	200201
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : anx.vortac
State Reference	MO
Altitude	agl single value : 316
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mci.tower tower : ewr.tower
Operator	other
Make Model Name	BAe 125 Series 800
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	descent : approach landing : missed approach
Route In Use	approach : instrument non precision
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	None
Person 1
Affiliation	government : faa
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 3000 flight time type : 850
ASRS Report	536262
Person 2
Affiliation	government : faa
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact none taken : insufficient time
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Problem Areas	Airspace Structure Environmental Factor Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

This near midair collision occurred while transitioning from approach to missed approach on an FAA flight check of the anx VORTAC. Approach being flown was the VOR-a at lee's summit municipal airport (klxt). Flight check procedures require us to fly any procedural radials inside the FAF at 100 ft below MDA, this is 1320 ft MSL with a 316 haa. 3 pilots were clearing visually and on unicom frequency. No one heard or saw the departure traffic until passing over the field. Visibility was reduced on approach due to positioning of the sun. In addition, a second radio was being monitored with kansas city approach for an approach path monitor check of the MSAW system. Estimated 300 ft vertical separation when passing over the airfield. We departed to the west and did not hear any radio calls from the other aircraft.

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Original NASA ASRS Text

Title: HAWKER 125-800 FAA FLT CHK ACFT HAD NMAC WITH ANOTHER ACFT WHILE MAKING A LOW APCH OVER AN UNCTLED ARPT. THEY WERE MONITORING AND XMITTING THEIR POS OVER UNICOM FREQ, BUT HEARD NOTHING FROM THE OTHER ACFT WHO WAS JUST TAKING OFF.

Narrative: THIS NMAC OCCURRED WHILE TRANSITIONING FROM APCH TO MISSED APCH ON AN FAA FLT CHK OF THE ANX VORTAC. APCH BEING FLOWN WAS THE VOR-A AT LEE'S SUMMIT MUNICIPAL ARPT (KLXT). FLT CHK PROCS REQUIRE US TO FLY ANY PROCEDURAL RADIALS INSIDE THE FAF AT 100 FT BELOW MDA, THIS IS 1320 FT MSL WITH A 316 HAA. 3 PLTS WERE CLRING VISUALLY AND ON UNICOM FREQ. NO ONE HEARD OR SAW THE DEP TFC UNTIL PASSING OVER THE FIELD. VISIBILITY WAS REDUCED ON APCH DUE TO POSITIONING OF THE SUN. IN ADDITION, A SECOND RADIO WAS BEING MONITORED WITH KANSAS CITY APCH FOR AN APCH PATH MONITOR CHK OF THE MSAW SYS. ESTIMATED 300 FT VERT SEPARATION WHEN PASSING OVER THE AIRFIELD. WE DEPARTED TO THE W AND DID NOT HEAR ANY RADIO CALLS FROM THE OTHER ACFT.

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.