Narrative:

I was working in the tower with combined positions of local, ground, flight data. Ground traffic also consisted of 2 maintenance vehs and 2 traction mowers crossing both runways and txwys. Mlt X wanted to do an engine check and asked if he could leave the military ramp and taxi onto runway 32. Mlt X had been in place for about 25 mins. An light transport IFR to ewr was issued a clearance and taxied to runway 32 via intersection bravo. At the same time the light transport called ready to go, the approach controller called with cpr Y to runway 14. I asked him for a heading and altitude for the cpr and approved the inbound to runway 14. The inbound was cleared to land runway 14 with mlt X still doing an engine check at the approach end of runway 32. Runway 23 was the active.

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Original NASA ASRS Text

Title: CPR Y HAD LESS THAN STANDARD SEPARATION FROM MLT X. SYSTEM ERROR. CPR Y LANDED ON OCCUPIED RWY. PLT DEVIATION.

Narrative: I WAS WORKING IN THE TWR WITH COMBINED POSITIONS OF LCL, GND, FLT DATA. GND TFC ALSO CONSISTED OF 2 MAINT VEHS AND 2 TRACTION MOWERS XING BOTH RWYS AND TXWYS. MLT X WANTED TO DO AN ENG CHK AND ASKED IF HE COULD LEAVE THE MIL RAMP AND TAXI ONTO RWY 32. MLT X HAD BEEN IN PLACE FOR ABOUT 25 MINS. AN LTT IFR TO EWR WAS ISSUED A CLRNC AND TAXIED TO RWY 32 VIA INTXN BRAVO. AT THE SAME TIME THE LTT CALLED READY TO GO, THE APCH CTLR CALLED WITH CPR Y TO RWY 14. I ASKED HIM FOR A HDG AND ALT FOR THE CPR AND APPROVED THE INBND TO RWY 14. THE INBND WAS CLRED TO LAND RWY 14 WITH MLT X STILL DOING AN ENG CHK AT THE APCH END OF RWY 32. RWY 23 WAS THE ACTIVE.

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.