BE35 pilot departed cos on the wrong runway.

Attributes
ACN	423170
Time
Date	199812
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : cos
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : tri
Operator	general aviation : personal
Make Model Name	Bonanza 35
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial
Experience	flight time last 90 days : 60 flight time total : 2000 flight time type : 1500
ASRS Report	423170
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	incursion : runway non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation Intra Facility Coordination Failure

Narrative:

1) VFR departure was planned for XA00 local from colorado springs international (cos) -- VFR direct to arlington, tx, (gky). 2) contacted cos ground control for departure clearance and taxi instructions. 3) received VFR departure ('fly runway headings after takeoff and taxi to runway 17R). ATIS also indicated runways 17L and 17R in use. 4) taxied to runway 17R, made run-up, advised cos tower that I was ready for takeoff at runway 17R. I believe there was a change in controllers after that contact. 5) tower advised me to 'hold short at runway 17R,' which I did. Landing traffic touched down long and did a touch and go. 6) tower cleared me for takeoff, which I did on runway 17R. 7) immediately after takeoff, tower advised that I had been cleared to takeoff on runway 12 instead of runway 17R. Tower advised that no incident had been caused and gave me a radar vector to departure heading for gky. 8) runways 17R and 12 share the same general area for departures. This area is very confusing at night. 9) suggest tower give more explicit instructions for taxi to runway 12 for takeoff after 'hold short' instructions are given.

Original NASA ASRS Text

Title: BE35 PLT DEPARTED COS ON THE WRONG RWY.

Narrative: 1) VFR DEP WAS PLANNED FOR XA00 LCL FROM COLORADO SPRINGS INTL (COS) -- VFR DIRECT TO ARLINGTON, TX, (GKY). 2) CONTACTED COS GND CTL FOR DEP CLRNC AND TAXI INSTRUCTIONS. 3) RECEIVED VFR DEP ('FLY RWY HDGS AFTER TKOF AND TAXI TO RWY 17R). ATIS ALSO INDICATED RWYS 17L AND 17R IN USE. 4) TAXIED TO RWY 17R, MADE RUN-UP, ADVISED COS TWR THAT I WAS READY FOR TKOF AT RWY 17R. I BELIEVE THERE WAS A CHANGE IN CTLRS AFTER THAT CONTACT. 5) TWR ADVISED ME TO 'HOLD SHORT AT RWY 17R,' WHICH I DID. LNDG TFC TOUCHED DOWN LONG AND DID A TOUCH AND GO. 6) TWR CLRED ME FOR TKOF, WHICH I DID ON RWY 17R. 7) IMMEDIATELY AFTER TKOF, TWR ADVISED THAT I HAD BEEN CLRED TO TKOF ON RWY 12 INSTEAD OF RWY 17R. TWR ADVISED THAT NO INCIDENT HAD BEEN CAUSED AND GAVE ME A RADAR VECTOR TO DEP HDG FOR GKY. 8) RWYS 17R AND 12 SHARE THE SAME GENERAL AREA FOR DEPS. THIS AREA IS VERY CONFUSING AT NIGHT. 9) SUGGEST TWR GIVE MORE EXPLICIT INSTRUCTIONS FOR TAXI TO RWY 12 FOR TKOF AFTER 'HOLD SHORT' INSTRUCTIONS ARE GIVEN.

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.