Piedmont Triad International Airport: Runway Incursions

Serious incursions (Category A and B)

• 2021-04-27 · Piedmont Triad International Airport · B767 · 23L · Category A

  ATC DID NOT PROVIDE RUNWAY SEPARATION ON RUNWAY 23L BETWEEN AIRCRAFT 1 AND A MAINTENANCE AIRCRAFT. A MAINTENANCE AIRCRAFT/CRJ9 CONTACTED ATC AND REQUESTED TO DO SOME ENGINE RUN-UPS ON RUNWAY 23L. ATC ASKED HOW LONG THE AIRCRAFT WOULD NEED ON THE RUNWAY AND THE PERSONNEL RESPONDED THAT THEY NEEDED 10 MINUTES. ATC INSTRUCTED THE MAINTENANCE AIRCRAFT TO PROCEED ONTO RUNWAY 23L AND ADVISE WHEN THEY WERE COMPLETED WITH THEIR RUN-UPS. THE READ BACK WAS CORRECT. ABOUT 7 MINUTES LATER, AIRCRAFT 1/B763 CONTACTED THE GSO ATC INBOUND ON THE ILS RUNWAY 23L. ATC CLEARED AIRCRAFT 1 TO LAND ON RUNWAY 23L, BUT DID NOT MENTION THE MAINTENANCE AIRCRAFT. ABOUT 7 MINUTES LATER, THE MAINTENANCE AIRCRAFT CONTACTED ATC AND ADVISED THAT THEY WERE FINISHED WITH THEIR RUN-UP. AT THIS TIME, AIRCRAFT 1 WAS ON A 3/4 MILE FINAL. ATC ASKED WHO WAS CALLING GSO GROUND. THE MAINTENANCE PERSONNEL ADVISED AGAIN THAT THEY WERE COMPLETED WITH THEIR RUN-UP. ATC ADVISED THAT THE MAINTENANCE PERSONNEL THAT THEY WERE COMING IN SCRATCHY AND TO SAY AGAIN THEIR POSITION AND REQUEST. AS SOON AS THIS TRANSMISSION ENDED, ATC INSTRUCTED AIRCRAFT 1 TO GO AROUND TWICE. FROM THE RADAR REPLAY, AT THE TIME OF THIS TRANSMISSION, IT APPEARS THAT AIRCRAFT 1 WAS INSIDE THE RUNWAY 23L THRESHOLD AND ALREADY EXECUTING A GO AROUND. AIRCRAFT 1 RESPONDED THAT THEY WERE GOING AROUND. AN OVERFLIGHT OCCURRED WITH THE CLOSEST PROXIMITY OF LESS THAN 200 FEET VERTICAL.