Close proximity air carrier-medium large transport GA-small aircraft 25 miles east of mci.

Attributes
ACN	152378
Time
Date	199007
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mci
State Reference	MO
Altitude	msl bound lower : 8500 msl bound upper : 8500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mci
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	152378
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 10000
ASRS Report	152373
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 100 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

At XX57 local time in 7/90, we were descending through 8500' on a heading to intercept the localizer backcourse 27 at mci when the first officer saw an orange and white small aircraft pass off our right wing tip. He was at our altitude and about 100' from our wing tip. We were on a 290 degree heading and he was on a southwest heading. I questioned approach control if he had that target. He said no. About 20 seconds later he said the target just appeared at our 8 O'clock position. He reported the aircraft had negative transponder. Several passenger saw the small aircraft. Visibility was good with scattered clouds.

Original NASA ASRS Text

Title: CLOSE PROX ACR-MLG GA-SMA 25 MILES EAST OF MCI.

Narrative: AT XX57 LCL TIME IN 7/90, WE WERE DSNDING THROUGH 8500' ON A HDG TO INTERCEPT THE LOC BACKCOURSE 27 AT MCI WHEN THE F/O SAW AN ORANGE AND WHITE SMA PASS OFF OUR RIGHT WING TIP. HE WAS AT OUR ALT AND ABOUT 100' FROM OUR WING TIP. WE WERE ON A 290 DEG HDG AND HE WAS ON A SW HDG. I QUESTIONED APCH CTL IF HE HAD THAT TARGET. HE SAID NO. ABOUT 20 SECS LATER HE SAID THE TARGET JUST APPEARED AT OUR 8 O'CLOCK POS. HE RPTED THE ACFT HAD NEGATIVE XPONDER. SEVERAL PAX SAW THE SMA. VISIBILITY WAS GOOD WITH SCATTERED CLOUDS.

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.