DC9 and a learjet had an near midair collision on a visual approach at dfw.

Attributes
ACN	423414
Time
Date	199812
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : iflq airport : dfw
State Reference	TX
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Make Model Name	Gates Learjet Corp Undifferentiated or Other Model
Flight Phase	descent : approach
Route In Use	approach : visual
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	other other : other pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 220 flight time total : 9900 flight time type : 3500
ASRS Report	423414
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : nmac non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 400 vertical : 0
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

My aircraft was #1 on a visual approach to runway 17C at dfw, just inside jiffy we had a TCASII RA with an aircraft on the right side. Vertical separation was zero. The #2 aircraft broke right and tower told us the aircraft was a stray from the west side that had been cleared for a visual approach to runway 18R not runway 17R. Evasive action was taken.

Original NASA ASRS Text

Title: DC9 AND A LEARJET HAD AN NMAC ON A VISUAL APCH AT DFW.

Narrative: MY ACFT WAS #1 ON A VISUAL APCH TO RWY 17C AT DFW, JUST INSIDE JIFFY WE HAD A TCASII RA WITH AN ACFT ON THE R SIDE. VERT SEPARATION WAS ZERO. THE #2 ACFT BROKE R AND TWR TOLD US THE ACFT WAS A STRAY FROM THE W SIDE THAT HAD BEEN CLRED FOR A VISUAL APCH TO RWY 18R NOT RWY 17R. EVASIVE ACTION WAS TAKEN.

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.