Uncertainty Of Position On The Maneuvering Area

In the event AERODROME CONTROL TOWER becomes aware of an aircraft or vehicle that is lost or uncertain of its position on the maneuvering area, appropriate action shall be taken immediately to safeguard operations and assist the aircraft or vehicle concerned to determine its position.

When there was a report from pilot or vehicle driver that he/she is in doubt as to the position of the aircraft or vehicle with respect to the maneuvering area, AERODROME CONTROL TOWER shall immediately guide the aircraft or vehicle to vacate the landing area, taxiway, or other part of the maneuvering area, to a safe distance as expeditiously as possible.

If the action of 1.18.1.1. is impracticable, AERODROME CONTROL TOWER shall request SHE Airport Authority to employ the ground support equipment (GSE) vehicle (“FOLLOW ME” vehicle) to guide the aircraft or vehicle to vacate the landing area, taxiway, or other part of the maneuvering area, to a safe distance as expeditiously as possible.

Runway Incursion Or Obstructed Aircraft Air Traffic Control

In the event AERODROME CONTROL TOWER, after a take-off clearance or a landing clearance has been issued, becomes aware of a runway incursion or the imminent occurrence thereof, or the existence of any obstruction on or in close proximity to the runway likely to impair the safety of an aircraft taking off or landing, appropriate action shall be taken as follows:

a) cancel the take-off clearance for a departing aircraft if the aircraft  has not yet commenced take-off roll using phraseology : [C/S] HOLD POSITION, CANCEL TAKE-OFF I SAY AGAIN CANCEL TAKE-OFF [reason];

b) cancel the take-off clearance for a departing aircraft if the aircraft has commenced take-off roll using phraseology : [C/S] STOP IMMEDIATELY [(repeat aircraft call sign) STOP IMMEDIATELY];

c) instruct a landing aircraft to execute a go-around or missed approach using phraseology : [C/S] GO AROUND (reason) ;

d) in all cases inform the aircraft of the runway incursion or obstruction and its location in relation to the runway.

Note.— Animals and flocks of birds may constitute an obstruction with regard to runway operations. In addition, an aborted take-off or a go- around executed after touchdown may expose the aero plane to the risk of overrunning the runway. Moreover, a low altitude missed approach may expose the aero plane to the risk of a tail strike.

Following any occurrence involving an obstruction on the runway or a runway incursion, pilots and controllers shall complete an air traffic incident report in accordance with the ICAO model Runway Incursion Initial Report Form (see attachment 31 on page 331).