Small transport taxied across runway while atx-small transport was on takeoff roll.

Attributes
ACN	88543
Time
Date	198806
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : srq
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bna
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : takeoff
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	ground other : taxi
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	88543
Person 2
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	none taken : insufficient time other
Consequence	Other
Miss Distance	horizontal : 15 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Small transport X air taxi crossed in front of a departing small transport Y. When small transport Y crossed the intersection where small transport X had crossed, small transport Y was 500' airborne and small transport X was well clear of the intersection. The crossing was observed by the tower. The local control attempted to cancel takeoff clearance of small transport Y, but the aircraft climbed out with small transport X clear of the runway.

Original NASA ASRS Text

Title: SMT TAXIED ACROSS RWY WHILE ATX-SMT WAS ON TKOF ROLL.

Narrative: SMT X AIR TAXI CROSSED IN FRONT OF A DEPARTING SMT Y. WHEN SMT Y CROSSED THE INTXN WHERE SMT X HAD CROSSED, SMT Y WAS 500' AIRBORNE AND SMT X WAS WELL CLEAR OF THE INTXN. THE XING WAS OBSERVED BY THE TWR. THE LCL CTL ATTEMPTED TO CANCEL TKOF CLRNC OF SMT Y, BUT THE ACFT CLBED OUT WITH SMT X CLR OF THE RWY.

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.