Narrative:

Aircraft X, a GLF3 was taxiing for departure. Aircraft Y a BE18, was on takeoff roll from runway 25R as aircraft X rolled onto runway 25R. This occurred at the intersection of runway 25R and taxiway east, about 1500 from the approach end. Aircraft Y was issued a 'cancel takeoff clearance' but decided to continue -- probably due to the close proximity of aircraft X. Aircraft Y was able to veer left and pass, by my estimation about 10 ft off the nose of the GLF3 -- who, even after being told to 'stop!' rather emphatically by ground control, was still moving until the BE18 whizzed past him. Aircraft X had been issued explicit taxi instructions, including a 'hold short of runway 25R' which he readback. He then requested clarification on the route. My perspective? Ground control probably should've reiterated the hold short instruction with the route clarification, though it isn't required. Aircraft X should not have kept moving without knowing where he was -- especially knowing he had to hold short somewhere. It should be noted also, that aircraft X was engaged in a check ride. Callback conversation with reporter revealed the following information: reporter indicated that the GLF3 did not stop taxiing until the BE18 passed directly in front of them.

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Original NASA ASRS Text

Title: GLF3 TAXIES ONTO RWY 25R AT MKE WHILE A BE18 IS ON IT'S TKOF ROLL AND MUST VEER AROUND THE ACFT.

Narrative: ACFT X, A GLF3 WAS TAXIING FOR DEP. ACFT Y A BE18, WAS ON TKOF ROLL FROM RWY 25R AS ACFT X ROLLED ONTO RWY 25R. THIS OCCURRED AT THE INTERSECTION OF RWY 25R AND TXWY E, ABOUT 1500 FROM THE APCH END. ACFT Y WAS ISSUED A 'CANCEL TKOF CLRNC' BUT DECIDED TO CONTINUE -- PROBABLY DUE TO THE CLOSE PROXIMITY OF ACFT X. ACFT Y WAS ABLE TO VEER L AND PASS, BY MY ESTIMATION ABOUT 10 FT OFF THE NOSE OF THE GLF3 -- WHO, EVEN AFTER BEING TOLD TO 'STOP!' RATHER EMPHATICALLY BY GND CTL, WAS STILL MOVING UNTIL THE BE18 WHIZZED PAST HIM. ACFT X HAD BEEN ISSUED EXPLICIT TAXI INSTRUCTIONS, INCLUDING A 'HOLD SHORT OF RWY 25R' WHICH HE READBACK. HE THEN REQUESTED CLARIFICATION ON THE ROUTE. MY PERSPECTIVE? GND CTL PROBABLY SHOULD'VE REITERATED THE HOLD SHORT INSTRUCTION WITH THE ROUTE CLARIFICATION, THOUGH IT ISN'T REQUIRED. ACFT X SHOULD NOT HAVE KEPT MOVING WITHOUT KNOWING WHERE HE WAS -- ESPECIALLY KNOWING HE HAD TO HOLD SHORT SOMEWHERE. IT SHOULD BE NOTED ALSO, THAT ACFT X WAS ENGAGED IN A CHECK RIDE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR INDICATED THAT THE GLF3 DID NOT STOP TAXIING UNTIL THE BE18 PASSED DIRECTLY IN FRONT OF 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.