Narrative:

Small transport X was taxied into position to hold on runway 4 for an intersection departure. Ground control approved the runway 4 departure with local control because runway 4 was an inactive runway. Air carrier Y was finishing its landing rollout on runway 29R. Runways 29R and 4 intersect. After air carrier Y rolled through the intersection of runway 4 local control cleared small transport X for takeoff. Air carrier Y called ground control after exiting runway 29R. Ground control instructed the air carrier Y to taxi to its gate. The routing required the air carrier Y to cross runway 4. Air carrier Y observed small transport X departing runway 4 and stopped a short distance onto the runway. Small transport X was airborne about 2000 ft prior to air carrier Y's position and climbed out near air carrier Y. Elapsed time from when small transport X was cleared for takeoff until he became airborne was 46 seconds -- small transport X had delayed his takeoff about 30 seconds without advising ATC. Ground control had planned for small transport X to not be a factor when air carrier Y approach runway 4 on his way to the gate. This was based on the distance air carrier X had to taxi to get to runway 4 and the amount of time that had passed since the small transport X had been cleared for takeoff. Supplemental information from acn 213909. Air carrier Y landed msp runway 29R. Cleared runway. Called ground. Ground 'to parking via (something).' approaching cross runway 04, copilot 'there's an airplane on runway.' simultaneously, I braked hard as I saw aircraft coming. Copilot 'he's taking off.' stopped with our nose at runway edge. 2 engine propeller business aircraft airborne 1000-2000 plus ft prior to our location.

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Original NASA ASRS Text

Title: MULTIPLE RWY OP INTERSECTING RWYS SMT Y TKOF ON OCCUPIED RWY HAD LTSS FROM ACR Y. SYS ERROR.

Narrative: SMT X WAS TAXIED INTO POS TO HOLD ON RWY 4 FOR AN INTXN DEP. GND CTL APPROVED THE RWY 4 DEP WITH LCL CTL BECAUSE RWY 4 WAS AN INACTIVE RWY. ACR Y WAS FINISHING ITS LNDG ROLLOUT ON RWY 29R. RWYS 29R AND 4 INTERSECT. AFTER ACR Y ROLLED THROUGH THE INTXN OF RWY 4 LCL CTL CLRED SMT X FOR TKOF. ACR Y CALLED GND CTL AFTER EXITING RWY 29R. GND CTL INSTRUCTED THE ACR Y TO TAXI TO ITS GATE. THE ROUTING REQUIRED THE ACR Y TO CROSS RWY 4. ACR Y OBSERVED SMT X DEPARTING RWY 4 AND STOPPED A SHORT DISTANCE ONTO THE RWY. SMT X WAS AIRBORNE ABOUT 2000 FT PRIOR TO ACR Y'S POS AND CLBED OUT NEAR ACR Y. ELAPSED TIME FROM WHEN SMT X WAS CLRED FOR TKOF UNTIL HE BECAME AIRBORNE WAS 46 SECONDS -- SMT X HAD DELAYED HIS TKOF ABOUT 30 SECONDS WITHOUT ADVISING ATC. GND CTL HAD PLANNED FOR SMT X TO NOT BE A FACTOR WHEN ACR Y APCH RWY 4 ON HIS WAY TO THE GATE. THIS WAS BASED ON THE DISTANCE ACR X HAD TO TAXI TO GET TO RWY 4 AND THE AMOUNT OF TIME THAT HAD PASSED SINCE THE SMT X HAD BEEN CLRED FOR TKOF. SUPPLEMENTAL INFO FROM ACN 213909. ACR Y LANDED MSP RWY 29R. CLRED RWY. CALLED GND. GND 'TO PARKING VIA (SOMETHING).' APCHING CROSS RWY 04, COPLT 'THERE'S AN AIRPLANE ON RWY.' SIMULTANEOUSLY, I BRAKED HARD AS I SAW ACFT COMING. COPLT 'HE'S TAKING OFF.' STOPPED WITH OUR NOSE AT RWY EDGE. 2 ENG PROP BUSINESS ACFT AIRBORNE 1000-2000 PLUS FT PRIOR TO OUR LOCATION.

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.