Small aircraft crossed runway while an medium large transport was departing.

Attributes
ACN	125935
Time
Date	198910
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sjc
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	ground other : taxi
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
ASRS Report	125935
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	incursion : runway non adherence : required legal separation non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Small aircraft X turned off runway 30L at taxiway G and was instructed to hold short of runway 30R. After a confused coordination between local control-1 and local control-2 controllers, I told small aircraft X to cross runway 30R and in the same transmission said 'correction, hold short of runway 30R.' small aircraft X then asked 'do you want me to cross' and then I responded with 'just forget it, hold short of 30R'. Small aircraft X stopped short of the hold lines and 3 controllers and a supervisor observed the aircraft stop. After clearing an medium large transport for takeoff, I turned around and small aircraft X was across runway 30R. This situation could have been prevented if I had been more concise and got an acknowledgement from small aircraft X. The pilot called the tower afterwards and explained to the supervisor, that his passenger saw an aircraft departing runway 30R but the pilot told his passenger that 'I think that's the way they do it here, because they're so busy'.

Original NASA ASRS Text

Title: SMA CROSSED RWY WHILE AN MLG WAS DEPARTING.

Narrative: SMA X TURNED OFF RWY 30L AT TXWY G AND WAS INSTRUCTED TO HOLD SHORT OF RWY 30R. AFTER A CONFUSED COORD BETWEEN LC-1 AND LC-2 CTLRS, I TOLD SMA X TO CROSS RWY 30R AND IN THE SAME XMISSION SAID 'CORRECTION, HOLD SHORT OF RWY 30R.' SMA X THEN ASKED 'DO YOU WANT ME TO CROSS' AND THEN I RESPONDED WITH 'JUST FORGET IT, HOLD SHORT OF 30R'. SMA X STOPPED SHORT OF THE HOLD LINES AND 3 CTLRS AND A SUPVR OBSERVED THE ACFT STOP. AFTER CLEARING AN MLG FOR TKOF, I TURNED AROUND AND SMA X WAS ACROSS RWY 30R. THIS SITUATION COULD HAVE BEEN PREVENTED IF I HAD BEEN MORE CONCISE AND GOT AN ACKNOWLEDGEMENT FROM SMA X. THE PLT CALLED THE TWR AFTERWARDS AND EXPLAINED TO THE SUPVR, THAT HIS PAX SAW AN ACFT DEPARTING RWY 30R BUT THE PLT TOLD HIS PAX THAT 'I THINK THAT'S THE WAY THEY DO IT HERE, BECAUSE THEY'RE SO BUSY'.

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.