GA small aircraft intruded on active runway during taxi.

Attributes
ACN	102699
Time
Date	198901
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mke
State Reference	WI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bw
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	ground : holding ground other : taxi
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : instrument pilot : cfi pilot : commercial
Experience	flight time last 90 days : 30 flight time total : 1200 flight time type : 400
ASRS Report	102699
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility

Narrative:

At the east side hangars at mitchell international my student requested from mke ground control and received taxi instructions. Instructions were routine, to 'taxi to runway 25R.' he taxied the airplane west, the northbound, then again wbound to the approach end of runway 19R. Not seeing any traffic, crossed 19R. He asked me if it was ok. As the instrument I said there is a hold short on the other side of 19R just short of 25R. As we crossed 19R I realized that there was no hold short line for runway 25R on the east side of the approach end of 25R. Hence, I turned the airplane sharply onto taxiway G which parallels 19R on the west side, crossed a hold short line there. Mke ground control: 'I won't say anything about it today, but you just crossed an active runway (25R). Pull off to the right to allow traffic to pass.' my student informed ground that we were ready for takeoff. The incident ended there. I realized too late that a hold short does not exist on taxiway F east of 25R. A warning sign at the hold short for 19R (east side) should also say, 'hold short for 25R.' this would prevent this error to pilots not familiar to the field. I did not request clarification from ground as to where we should wait.

Original NASA ASRS Text

Title: GA SMA INTRUDED ON ACTIVE RWY DURING TAXI.

Narrative: AT THE E SIDE HANGARS AT MITCHELL INTL MY STUDENT REQUESTED FROM MKE GND CTL AND RECEIVED TAXI INSTRUCTIONS. INSTRUCTIONS WERE ROUTINE, TO 'TAXI TO RWY 25R.' HE TAXIED THE AIRPLANE W, THE NBND, THEN AGAIN WBOUND TO THE APCH END OF RWY 19R. NOT SEEING ANY TFC, CROSSED 19R. HE ASKED ME IF IT WAS OK. AS THE INSTR I SAID THERE IS A HOLD SHORT ON THE OTHER SIDE OF 19R JUST SHORT OF 25R. AS WE CROSSED 19R I REALIZED THAT THERE WAS NO HOLD SHORT LINE FOR RWY 25R ON THE E SIDE OF THE APCH END OF 25R. HENCE, I TURNED THE AIRPLANE SHARPLY ONTO TXWY G WHICH PARALLELS 19R ON THE W SIDE, CROSSED A HOLD SHORT LINE THERE. MKE GND CTL: 'I WON'T SAY ANYTHING ABOUT IT TODAY, BUT YOU JUST CROSSED AN ACTIVE RWY (25R). PULL OFF TO THE RIGHT TO ALLOW TFC TO PASS.' MY STUDENT INFORMED GND THAT WE WERE READY FOR TKOF. THE INCIDENT ENDED THERE. I REALIZED TOO LATE THAT A HOLD SHORT DOES NOT EXIST ON TXWY F E OF 25R. A WARNING SIGN AT THE HOLD SHORT FOR 19R (E SIDE) SHOULD ALSO SAY, 'HOLD SHORT FOR 25R.' THIS WOULD PREVENT THIS ERROR TO PLTS NOT FAMILIAR TO THE FIELD. I DID NOT REQUEST CLARIFICATION FROM GND AS TO WHERE WE SHOULD WAIT.

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.