AA5A flight crew has runway incursion at hou departing on the wrong runway.

Attributes
ACN	583274
Time
Date	200305
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hou.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dwh.tower
Operator	general aviation : instructional
Make Model Name	Cheetah, Tiger, Traveler
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi ground : takeoff roll
Flight Plan	VFR
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 1400 flight time type : 20
ASRS Report	583274
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Our clearance was to taxi to runway 4 at intersection K1 for departure. Runways 35/17 cross runways 4/22 at intersection K1. When we were cleared by tower for takeoff, student lined up for runway 35, at that time I was latching the canopy, and applied full power before I could react. Since he had already applied full power and we were on the roll, I didn't want to slam on the brakes or do anything that will result in blown tire or put the safety of the flight in jeopardy. We were asked to contact the tower when we got on the ground. I explained what happened to them.

Original NASA ASRS Text

Title: AA5A FLT CREW HAS RWY INCURSION AT HOU DEPARTING ON THE WRONG RWY.

Narrative: OUR CLRNC WAS TO TAXI TO RWY 4 AT INTXN K1 FOR DEP. RWYS 35/17 CROSS RWYS 4/22 AT INTXN K1. WHEN WE WERE CLRED BY TWR FOR TKOF, STUDENT LINED UP FOR RWY 35, AT THAT TIME I WAS LATCHING THE CANOPY, AND APPLIED FULL PWR BEFORE I COULD REACT. SINCE HE HAD ALREADY APPLIED FULL PWR AND WE WERE ON THE ROLL, I DIDN'T WANT TO SLAM ON THE BRAKES OR DO ANYTHING THAT WILL RESULT IN BLOWN TIRE OR PUT THE SAFETY OF THE FLT IN JEOPARDY. WE WERE ASKED TO CONTACT THE TWR WHEN WE GOT ON THE GND. I EXPLAINED WHAT HAPPENED TO THEM.

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.