Close proximity commuter-mdt GA-small aircraft in the atl TCA. GA was not in radio contact with ATC.

Attributes
ACN	89596
Time
Date	198806
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 3300 msl bound upper : 3500
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8500 flight time type : 2000
ASRS Report	89596
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : airborne less severe non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	other
Miss Distance	horizontal : 2900 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared for ILS 27L atl, talking to final controller. Told to join at 3500' MSL. Established on localizer and with G/south centered, we started down. Approximately 3300' MSL I saw a single engine low wing approaching us on a collision course from right to left. I took control of the aircraft and made a gentle pull up to miss him. Then I reported the situation to ATC. It was not the controller's fault--the clown in the small aircraft was busting the TCA and probably had his transponder turned off. In-flight visibility was 3 mi at the very best. I cannot believe some commie pinko idiot bonehead would bust a TCA in 3 mi visibility.

Original NASA ASRS Text

Title: CLOSE PROX COMMUTER-MDT GA-SMA IN THE ATL TCA. GA WAS NOT IN RADIO CONTACT WITH ATC.

Narrative: CLRED FOR ILS 27L ATL, TALKING TO FINAL CTLR. TOLD TO JOIN AT 3500' MSL. ESTABLISHED ON LOC AND WITH G/S CENTERED, WE STARTED DOWN. APPROX 3300' MSL I SAW A SINGLE ENG LOW WING APCHING US ON A COLLISION COURSE FROM RIGHT TO LEFT. I TOOK CONTROL OF THE ACFT AND MADE A GENTLE PULL UP TO MISS HIM. THEN I RPTED THE SITUATION TO ATC. IT WAS NOT THE CTLR'S FAULT--THE CLOWN IN THE SMA WAS BUSTING THE TCA AND PROBABLY HAD HIS TRANSPONDER TURNED OFF. INFLT VIS WAS 3 MI AT THE VERY BEST. I CANNOT BELIEVE SOME COMMIE PINKO IDIOT BONEHEAD WOULD BUST A TCA IN 3 MI VIS.

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.