Air carrier overran an small aircraft on final approach due to communication between controllers.

Attributes
ACN	141050
Time
Date	199003
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : slc
State Reference	UT
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : slc
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	landing other
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	landing other
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 20
ASRS Report	141050
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	140793
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 1000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Valley position had been given approval by the final position to 'hit the holes' between his jet arrs runway 16L. I positioned small aircraft X to make a turn to the final behind an air carrier at 2 mi and in front of another air carrier at 12 mi both indicating they were assigned runway 16L. A third air carrier Y was west of the slc VOR eastbound on a base leg west/O a runway assignment indicated in the Y field. Because of the positioning of the 2 air carrier's indicating runway 16L, it appeared that that 'hole' was not available for air carrier Y west of the VOR, but was available for small aircraft X. I instructed small aircraft X to turn left base. When small aircraft X was approximately 1 1/2-2 mi air carrier Y that was west of the slc VOR overran small aircraft X and small aircraft X was broke out by the tower. Supplemental information from acn 140793: I was working final. As I turned air carrier Y right base to runway 16L, valley had also turned small aircraft X left base to 16L. When air carrier Y was on 4 or 5 mi I observed small aircraft X on final 1 mi ahead, same altitude. I issued traffic, air carrier Y had small aircraft X in sight and he applied visibility sep and went to tower frequency. Tower then broke out small aircraft X. TCA sep was compromised.

Original NASA ASRS Text

Title: ACR OVERRAN AN SMA ON FINAL APCH DUE TO COM BETWEEN CTLRS.

Narrative: VALLEY POS HAD BEEN GIVEN APPROVAL BY THE FINAL POS TO 'HIT THE HOLES' BTWN HIS JET ARRS RWY 16L. I POSITIONED SMA X TO MAKE A TURN TO THE FINAL BEHIND AN ACR AT 2 MI AND IN FRONT OF ANOTHER ACR AT 12 MI BOTH INDICATING THEY WERE ASSIGNED RWY 16L. A THIRD ACR Y WAS W OF THE SLC VOR EBND ON A BASE LEG W/O A RWY ASSIGNMENT INDICATED IN THE Y FIELD. BECAUSE OF THE POSITIONING OF THE 2 ACR'S INDICATING RWY 16L, IT APPEARED THAT THAT 'HOLE' WAS NOT AVAILABLE FOR ACR Y W OF THE VOR, BUT WAS AVAILABLE FOR SMA X. I INSTRUCTED SMA X TO TURN LEFT BASE. WHEN SMA X WAS APPROX 1 1/2-2 MI ACR Y THAT WAS W OF THE SLC VOR OVERRAN SMA X AND SMA X WAS BROKE OUT BY THE TWR. SUPPLEMENTAL INFO FROM ACN 140793: I WAS WORKING FINAL. AS I TURNED ACR Y RIGHT BASE TO RWY 16L, VALLEY HAD ALSO TURNED SMA X LEFT BASE TO 16L. WHEN ACR Y WAS ON 4 OR 5 MI I OBSERVED SMA X ON FINAL 1 MI AHEAD, SAME ALT. I ISSUED TFC, ACR Y HAD SMA X IN SIGHT AND HE APPLIED VIS SEP AND WENT TO TWR FREQ. TWR THEN BROKE OUT SMA X. TCA SEP WAS COMPROMISED.

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.