Near midair collision between an air carrier widebody transport and a cpr mdt in the TCA.

Attributes
ACN	209431
Time
Date	199205
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl
State Reference	MO
Altitude	msl bound lower : 2500 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : stl tower : stl
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach landing : go around
Route In Use	approach : straight in approach : visual
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Medium Transport
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : direct
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 200 flight time total : 25000 flight time type : 8000
ASRS Report	209431
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On approach into stl (visual) we were at less than 3000 ft when our TCASII gave an RA warning indicating that a problem existed. All advised traffic was in sight. We executed a missed approach from about 2500 ft. After we had landed we called ground to ask if there was any other traffic in the area. They advised there had been a cpr mdt off our left wingtip. While we never had visual contact with the intruder aircraft the TCASII showed him well inside the danger zone and at our altitude. Our last indication as we passed over him was 12 O'clock at 100 ft. We were not notified of this traffic until we were parked.

Original NASA ASRS Text

Title: NMAC BTWN AN ACR WDB AND A CPR MDT IN THE TCA.

Narrative: ON APCH INTO STL (VISUAL) WE WERE AT LESS THAN 3000 FT WHEN OUR TCASII GAVE AN RA WARNING INDICATING THAT A PROBLEM EXISTED. ALL ADVISED TFC WAS IN SIGHT. WE EXECUTED A MISSED APCH FROM ABOUT 2500 FT. AFTER WE HAD LANDED WE CALLED GND TO ASK IF THERE WAS ANY OTHER TFC IN THE AREA. THEY ADVISED THERE HAD BEEN A CPR MDT OFF OUR L WINGTIP. WHILE WE NEVER HAD VISUAL CONTACT WITH THE INTRUDER ACFT THE TCASII SHOWED HIM WELL INSIDE THE DANGER ZONE AND AT OUR ALT. OUR LAST INDICATION AS WE PASSED OVER HIM WAS 12 O'CLOCK AT 100 FT. WE WERE NOT NOTIFIED OF THIS TFC UNTIL WE WERE PARKED.

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.