Air carrier X has less than standard separation from small transport Y. System error.

Attributes
ACN	186030
Time
Date	199108
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : clt
State Reference	NC
Altitude	agl bound lower : 0 agl bound upper : 180
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : clt
Operator	common carrier : air carrier
Make Model Name	Medium Transport
Navigation In Use	Other Other
Flight Phase	descent : approach landing other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent : approach landing other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 3100 flight time type : 1200
ASRS Report	186030
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 0 vertical : 180
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X on approach into clt the approach controller had us at 210 KTS and cleared for the back course localizer 23 approach. After contacting tower, tower advised to slow to 150 KTS. We slowed to 150 then the tower requested 120 KTS. We slowed to 120 KTS then the tower requested min approach speed. We went to full flaps and slowed to 88 KTS. The controller told us that he had small transport Y landing on 18L that he was not talking to. I turned to look and sure enough we were both about 1/2 mi to each respective runway. From my view point there was no way we could land, so I started adding power to stop our descent, preparing for a sure go around. At the time of crossing the end of each runway the other small transport Y called and requested permission to land. The controller cleared small transport Y to land through the intersection. At this point I was holding about 200 ft AGL on speed. Small transport Y landed about 200 ft short of the 18/23 intersection and we crossed the traffic at the intersection about 180 ft AGL. The tower cleared us to land before the traffic was through the intersection. 'The traffic is clear of the intersection, you are cleared to land.' we crossed small transport Y at about 180 ft AGL and landed on the other side of the intersection. There was no real danger in this situation as long as all involved knew what was happening.

Original NASA ASRS Text

Title: ACR X HAS LTSS FROM SMT Y. SYS ERROR.

Narrative: ACR X ON APCH INTO CLT THE APCH CTLR HAD US AT 210 KTS AND CLRED FOR THE BC LOC 23 APCH. AFTER CONTACTING TWR, TWR ADVISED TO SLOW TO 150 KTS. WE SLOWED TO 150 THEN THE TWR REQUESTED 120 KTS. WE SLOWED TO 120 KTS THEN THE TWR REQUESTED MIN APCH SPD. WE WENT TO FULL FLAPS AND SLOWED TO 88 KTS. THE CTLR TOLD US THAT HE HAD SMT Y LNDG ON 18L THAT HE WAS NOT TALKING TO. I TURNED TO LOOK AND SURE ENOUGH WE WERE BOTH ABOUT 1/2 MI TO EACH RESPECTIVE RWY. FROM MY VIEW POINT THERE WAS NO WAY WE COULD LAND, SO I STARTED ADDING PWR TO STOP OUR DSCNT, PREPARING FOR A SURE GAR. AT THE TIME OF XING THE END OF EACH RWY THE OTHER SMT Y CALLED AND REQUESTED PERMISSION TO LAND. THE CTLR CLRED SMT Y TO LAND THROUGH THE INTXN. AT THIS POINT I WAS HOLDING ABOUT 200 FT AGL ON SPD. SMT Y LANDED ABOUT 200 FT SHORT OF THE 18/23 INTXN AND WE CROSSED THE TFC AT THE INTXN ABOUT 180 FT AGL. THE TWR CLRED US TO LAND BEFORE THE TFC WAS THROUGH THE INTXN. 'THE TFC IS CLR OF THE INTXN, YOU ARE CLRED TO LAND.' WE CROSSED SMT Y AT ABOUT 180 FT AGL AND LANDED ON THE OTHER SIDE OF THE INTXN. THERE WAS NO REAL DANGER IN THIS SITUATION AS LONG AS ALL INVOLVED KNEW WHAT WAS HAPPENING.

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.