An MD88 is given an evasive maneuver on vectors final approach runway 27L by south approach controller at atl when a C310 veers off course from the north complex runway 26R ILS approach.

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Attributes
ACN	432098
Time
Date	199903
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 2800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 27l other
Flight Phase	descent : intermediate altitude descent : approach
Route In Use	approach : instrument precision arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : atl.tracon
Make Model Name	Cessna 310/T310C
Operating Under FAR Part	Part 91
Navigation In Use	ils localizer & glide slope : 26r
Flight Phase	descent : intermediate altitude descent : approach landing : missed approach
Route In Use	approach : instrument precision arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 210 flight time total : 9000 flight time type : 2000
ASRS Report	432098
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	conflict : airborne less severe non adherence : clearance other anomaly other spatial deviation
Independent Detector	atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other controllerb
Resolutory Action	controller : issued new clearance controller : separated traffic controller : issued alert
Consequence	faa : reviewed incident with flight crew other
Miss Distance	horizontal : 3000 vertical : 0
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Our aircraft was on a vector to intercept ILS runway 27L at atl at 2800 ft about 7 NM from runway. Cessna was on ILS runway 26R final. For some unknown reason the cessna made a turn approximately 90 degrees to the left (south) and entered the no transgression zone at atl. TCASII gave us a TA only (RA is inhibited that close to ground on approach). Within 1-2 seconds the south controller issued an evasive maneuver to us. I was later told by approach control supervisor that cessna was also given an evasive maneuver by north approach controller. Approach control supervisor said that the cessna was given vectors to another approach, had a similar problem, was denied landing at atl and vectored to another airport. Approach control supervisor also said that pending closer investigation he thought we had zero vertical and 1/2 mi lateral separation. He assured me that we were in no way at fault.

Original NASA ASRS Text

Title: AN MD88 IS GIVEN AN EVASIVE MANEUVER ON VECTORS FINAL APCH RWY 27L BY S APCH CTLR AT ATL WHEN A C310 VEERS OFF COURSE FROM THE N COMPLEX RWY 26R ILS APCH.

Narrative: OUR ACFT WAS ON A VECTOR TO INTERCEPT ILS RWY 27L AT ATL AT 2800 FT ABOUT 7 NM FROM RWY. CESSNA WAS ON ILS RWY 26R FINAL. FOR SOME UNKNOWN REASON THE CESSNA MADE A TURN APPROX 90 DEGS TO THE L (S) AND ENTERED THE NO TRANSGRESSION ZONE AT ATL. TCASII GAVE US A TA ONLY (RA IS INHIBITED THAT CLOSE TO GND ON APCH). WITHIN 1-2 SECONDS THE S CTLR ISSUED AN EVASIVE MANEUVER TO US. I WAS LATER TOLD BY APCH CTL SUPVR THAT CESSNA WAS ALSO GIVEN AN EVASIVE MANEUVER BY N APCH CTLR. APCH CTL SUPVR SAID THAT THE CESSNA WAS GIVEN VECTORS TO ANOTHER APCH, HAD A SIMILAR PROB, WAS DENIED LNDG AT ATL AND VECTORED TO ANOTHER ARPT. APCH CTL SUPVR ALSO SAID THAT PENDING CLOSER INVESTIGATION HE THOUGHT WE HAD ZERO VERT AND 1/2 MI LATERAL SEPARATION. HE ASSURED ME THAT WE WERE IN NO WAY AT FAULT.

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.