A departing air carrier overtook a previously departed small aircraft.

Attributes
ACN	110549
Time
Date	198905
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : slc
State Reference	UT
Altitude	msl bound lower : 5700 msl bound upper : 5700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : slc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	110549
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 1500 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure

Narrative:

The small transport departed runway 34R northbound. I asked departure for a turn reference an air carrier behind him which was also northbound. Departure said to keep him straight out. I then launched the air carrier wbound behind the small aircraft with a 280 degree heading. Departure then coordinated that the small aircraft was on a 310 degree heading.I noticed that the targets were going to be close so I immediately got both aircraft in sight and maintained visibility sep with them. When I saw the air carrier pass behind and over the small aircraft, I switched him to departure frequency. The pilot called 2 days later and said that he had to make evasive maneuvers to miss the small aircraft. Neither I nor my coordinator saw the air carrier make any unusual departure procedures and the pilot never mentioned it to me. I suggest that departure and local control come up with a plan in reference to requests for special headings for smaller, slower aircraft such as not turning a slower aircraft to a specified heading until out of a certain altitude or distance from the airport.

Original NASA ASRS Text

Title: A DEPARTING ACR OVERTOOK A PREVIOUSLY DEPARTED SMA.

Narrative: THE SMT DEPARTED RWY 34R NBND. I ASKED DEP FOR A TURN REF AN ACR BEHIND HIM WHICH WAS ALSO NBND. DEP SAID TO KEEP HIM STRAIGHT OUT. I THEN LAUNCHED THE ACR WBOUND BEHIND THE SMA WITH A 280 DEG HDG. DEP THEN COORDINATED THAT THE SMA WAS ON A 310 DEG HDG.I NOTICED THAT THE TARGETS WERE GOING TO BE CLOSE SO I IMMEDIATELY GOT BOTH ACFT IN SIGHT AND MAINTAINED VIS SEP WITH THEM. WHEN I SAW THE ACR PASS BEHIND AND OVER THE SMA, I SWITCHED HIM TO DEP FREQ. THE PLT CALLED 2 DAYS LATER AND SAID THAT HE HAD TO MAKE EVASIVE MANEUVERS TO MISS THE SMA. NEITHER I NOR MY COORDINATOR SAW THE ACR MAKE ANY UNUSUAL DEP PROCS AND THE PLT NEVER MENTIONED IT TO ME. I SUGGEST THAT DEP AND LCL CTL COME UP WITH A PLAN IN REF TO REQUESTS FOR SPECIAL HDGS FOR SMALLER, SLOWER ACFT SUCH AS NOT TURNING A SLOWER ACFT TO A SPECIFIED HDG UNTIL OUT OF A CERTAIN ALT OR DISTANCE FROM THE ARPT.

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.