Separation of departing aircraft :

a) A minimum separation of 2 minutes shall be applied between a LIGHT or MEDIUM aircraft taking off behind a HEAVY aircraft or a LIGHT aircraft taking off behind a MEDIUM aircraft (see figure 3 below)

Figure 3. Wake turbulence separation minima between departures

Displaced landing threshold

A separation minimum of 2 minutes shall be applied between a LIGHT or MEDIUM aircraft and a HEAVY aircraft and between a LIGHT aircraft and a MEDIUM aircraft when operating on a runway with a displaced landing threshold when:

a) a departing LIGHT or MEDIUM aircraft follows a HEAVY aircraft arrival and a departing LIGHT aircraft follows a MEDIUM aircraft arrival; or

b) an arriving LIGHT or MEDIUM aircraft follows a HEAVY aircraft departure and an arriving LIGHT aircraft follows a MEDIUM aircraft departure if the projected flight paths are expected to cross.

Opposite direction

A separation minimum of 2 minutes shall be applied between a LIGHT or MEDIUM aircraft and a HEAVY aircraft and between a LIGHT aircraft and a MEDIUM aircraft when the heavier aircraft is making a low or missed approach and the lighter aircraft is (see figure 4 ):

a)    utilizing an opposite-direction runway for take-off; or

b)    landing on the same runway in the opposite direction.

Traffic information

Traffic information shall be given to VISUAL FLIGHT RULES flights concerned whenever they constitute traffic to each other.

Note 1.— Between departing and arriving VISUAL FLIGHT RULES flights (reciprocal tracks), traffic information shall be given to both aircraft whatever the ETA difference. the ETA difference is more than 3 minutes).

Note 2.— Between departing VISUAL FLIGHT RULES flights or arriving VISUAL FLIGHT RULES flights (same track), traffic information shall be given to both aircraft if the ETA difference is 3 minutes or less (traffic information may not be given if

Traffic information shall include

a) aircraft identification (ACID) or call sign;

b) type of aircraft concerned;

c) route of flight;

d) current position;

e) level; and

f) ETA significant point(s).

Example of phraseology : PK ABP (call sign) [YOUR] TRAFFIC IS ONE CESSNA 172 (type of aircraft) COMING FROM STARFISH

(route) POSITION OVER TF NDB (position) MAINTAINING (or LEAVING/PASSING) 3000 FT (level) ESTIMATING BRAVO 0615 (ETA significant point).

If there is additional traffic, just add the word : ADDITIONAL TRAFFIC ONE ……………… etc.

Within aerodrome traffic circuit, providing separation by instructing aircraft to orbit, extend downwind or continue to overhead is more preferable than just providing traffic information.

1.20.7. Multi-runways operation

1.20.7.1. Parallel runways

1.20.7.1.1. Since the only one runway (16R/34L) which is assigned as the instrument runway and only runway 34L which is furnished with ILS and the distance between their runway centre lines is 1088 meters, the following procedures apply :

a) Departing aircraft

1) aircraft may be cleared for take-off simultaneously from both runways provided that the paths of the aircraft after taking off will not cross one to each other;

2) if the paths of the aircraft after taking off will be converging or proceeding to the same point or route, they shall be separated vertically;

b) Arriving aircraft

1) if in visual meteorological conditions, aircraft may be cleared

to land simultaneously to both runways provided that both aircraft are not coming from the same point or route;

2) if in instrument meteorological conditions, aircraft may not be cleared to land simultaneously to both runways

1.20.7.2.6. Since there is no ILS for runway 07/25, when using multi-runways simultaneously, caution shall be advised for aircraft on final runway 07 and aircraft on downwind runway 34L/right downwind runway 16R or aircraft on final runway 25 and aircraft on downwind runway 16L/right

downwind runway 34R. Make sure that aircraft on downwind/right downwind has sufficient vertical separation with aircraft on final.