Controller training in progress in tower. Local controller cleared a C172 for takeoff on RENO2 SID and shortly thereafter cleared a B737 for takeoff on a mustang 4 SID. B737 was observed by departure controller overtaking the C172 southeast the airport and departure controller turned the B737 and issued traffic to him. B737 sighted traffic and was cleared to maintain visual separation, but not before a system error occurred.

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Attributes
ACN	350858
Time
Date	199610
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rno
State Reference	NV
Altitude	msl bound lower : 8000 msl bound upper : 8300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : rno tower : rno
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar pilot : student
Experience	controller military : 9 controller radar : 20 flight time total : 8
ASRS Report	350858
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
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 other
Consequence	Other
Miss Distance	horizontal : 8000 vertical : 300
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Cessna departed normally on RENO2 SID. Strong headwind and mountain wave. Ground speed plus or minus 80 KTS. B737 launched when cessna 4.5 mi south, assigned mustang 4 SID (left turn to fmg at 3 DME). I was unable to turn cessna due to MVA. B737 was overtaking rapidly. I turned B737 with immediate left turn to 360 degrees, but turn was slow and separation decreased. B737 reported C172 in sight and visual separation was then applied. When asked why local controller launched B737 contrary to procedure, explanation was 'training error.' no coordination took place between local and departure control. Separation of fast behind slow was not ensured. 2 supervisors observed event. No action was taken by either to change event or report it.

Original NASA ASRS Text

Title: CTLR TRAINING IN PROGRESS IN TWR. LCL CTLR CLRED A C172 FOR TKOF ON RENO2 SID AND SHORTLY THEREAFTER CLRED A B737 FOR TKOF ON A MUSTANG 4 SID. B737 WAS OBSERVED BY DEP CTLR OVERTAKING THE C172 SE THE ARPT AND DEP CTLR TURNED THE B737 AND ISSUED TFC TO HIM. B737 SIGHTED TFC AND WAS CLRED TO MAINTAIN VISUAL SEPARATION, BUT NOT BEFORE A SYS ERROR OCCURRED.

Narrative: CESSNA DEPARTED NORMALLY ON RENO2 SID. STRONG HEADWIND AND MOUNTAIN WAVE. GND SPD PLUS OR MINUS 80 KTS. B737 LAUNCHED WHEN CESSNA 4.5 MI S, ASSIGNED MUSTANG 4 SID (L TURN TO FMG AT 3 DME). I WAS UNABLE TO TURN CESSNA DUE TO MVA. B737 WAS OVERTAKING RAPIDLY. I TURNED B737 WITH IMMEDIATE L TURN TO 360 DEGS, BUT TURN WAS SLOW AND SEPARATION DECREASED. B737 RPTED C172 IN SIGHT AND VISUAL SEPARATION WAS THEN APPLIED. WHEN ASKED WHY LCL CTLR LAUNCHED B737 CONTRARY TO PROC, EXPLANATION WAS 'TRAINING ERROR.' NO COORD TOOK PLACE BTWN LCL AND DEP CTL. SEPARATION OF FAST BEHIND SLOW WAS NOT ENSURED. 2 SUPVRS OBSERVED EVENT. NO ACTION WAS TAKEN BY EITHER TO CHANGE EVENT OR RPT IT.

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.