entering the runway, remember to scan the full length of the  runway and its approach end for other aircraft.  There have been collisions and incidents involving aircraft  instructed to “line up and wait” while ATC waits for the  necessary conditions to issue a takeoff clearance. An OI  caused a 737 to land on a runway occupied by a twin-engine  turboprop. The turboprop was holding in position awaiting  takeoff clearance. Upon landing, the 737 collided with the  twin-engine turboprop.  When ATC instructs you to “line up and wait,” they should  advise you of any anticipated delay in receiving your takeoff  clearance. Possible reasons for ATC takeoff clearance delays  may include other aircraft landing and/or departing, wake  turbulence, or traffic crossing an intersecting runway.  If LUAW procedures are being used and landing traffic is a  factor, ATC is required to:  When an intersection departure is requested on a temporarily  or permanently shortened runway during the construction,  the remaining length of runway is included in the clearance.  For example, “Runway three six at Echo, intersection  departure, 5,600 feet available.” If following the construction,  the runway is permanently shortened, ATC will include  the word “shortened” until the Chart Supplement U.S.  (formerly Airport/Facility Directory) is updated to include  the permanent changes to the runway length.  While en route and after receiving the destination airport  ATIS/landing information, review the airport diagram and  brief yourself as to your exit taxiway. Determine the following:  After landing, use the utmost caution where the exit taxiways  intersect another runway, and do not exit onto another runway  without ATC authorization. Do not accept last minute  turnoff instructions from the control tower unless you clearly  understand the instructions and are at a speed that ensures you  You should review NOTAMs in your preflight planning to  determine any airport changes that will affect your departure  or arrival. When the available runway length has been  temporarily or permanently shortened due to construction,  the ATIS includes the words “warning” and “shortened” in  the text of the message. For the duration of the construction  when the runway is temporarily shortened, ATC will  include the word “shortened” in their clearance instructions.  Furthermore, the use of the term “full length” will not be used  by ATC during this period of the construction.  Example – “N456HK, Runway One-Eight, continue,  traffic holding in position.”  NOTE: ATC will/must issue a takeoff clearance to the  traffic holding in position in sufficient time to ensure  no conflict exists with landing aircraft. Prescribed  runway separation must exist no later than when the  landing aircraft crosses the threshold.  Example – “N123AG, Runway One-Eight, line up  and wait, traffic a Cessna 210 on a six-mile final.”  Example – “N456HK, Runway One-Eight, cleared to  land, traffic a DeHavilland Otter holding in position.”  Example – “N123AG Runway One-Eight, at Charlie  Three, line up and wait.”  Example – “N123AG Runway One-Eight, at Charlie  Three, cleared for takeoff.”  Some examples of ATC instructions are:  • If advised of a reason for the delay, or the reason is  clearly visible, expect an imminent takeoff clearance  once the reason is no longer an issue.  • If a takeoff clearance is not received within 90 seconds  after receiving the “line up and wait” instruction,  contact ATC immediately.  • When ATC issues “line up and wait” instructions  and takeoff clearances from taxiway intersection, the  taxiway designator is included.  • “Runway three six shortened, line up and wait.”  • “Runway three six shortened, cleared for takeoff.”  • “Runway three six shortened, cleared to land.”  • In cases where ATC is not permitted to issue landing  clearances with traffic in the LUAW position, traffic  information is issued to the closest aircraft that is  requesting a full-stop, touch-and-go, stop-and-go,  option, or unrestricted low approach.  • Inform the aircraft in the LUAW position of the closest  aircraft that is requesting a full-stop, touch-and-go,  stop-and-go, option, or unrestricted low approach.  • In some cases, where safety logic is being used, ATC  is permitted to issue landing clearances with traffic in  the LUAW position. Traffic information is issued to  the landing traffic.  • Are there any runway hold markings in close proximity  to the exit taxiway?  • Do not cross any hold markings or exit onto any  runways without ATC clearance.  Pre-Landing, Landing, and After-Landing  14-34  ATC Instructions — “ Runway Shortened” 