The continue approach instruction is a part of the Landing Phraseology and is used by the Tower. It occurs when there’s departing traffic, an aircraft is lined up or is Backtracking. This actions occurs when another aircraft handed-off by Radar calls for landing. Generally there’s no sequence, but sometimes, to ensure separation they use this but NOT for landing.
Here is an example:
XC-SCE: Schiphol Tower, XC-SCE, inbound on the ILS runway 18C
SCHIPHOL Tower: XC-SCE, Runway 18C, Continue Approach
XC-SCE: Continuing Approach, Runway 18C, XC-SCE
As I said above, they can use sequencng IRL too.
XC-SCE: Pearson Tower, XC-SCE, Inbound on the GPS Runway 15L
TORONTO Tower: XC-SCE, Runway 15L, continue approach, you’re number 2.
XC-SCE: Roger, continuing Approach, Runway 15L, XC.SCE
After a departing or landing aircraft leaves the runway, they will give them its landing clearance.
This command can be utilized by controllers when on ILS or GPS approach, so the contrllers can let them know that they can expect a late landing clearance or there’s a plane on runway, and the sequencing in them is important when on a busy airport. If is visual approach, or aircraft inbound with no Radar services or there’s some aircraft doing patterns, the controllers should use the “Number X, RWY XX, Cleared to land/For the option”.
NOTE: Don’t confuse this command with the “Continue Inbound”. The Continue Approach is for planes in final who had Radar services.
Hope you liked the idea, see you in the virtual skies.