TTX – 11

- essential traffic information (essential local traffic)

- wake turbulence

- flight information service (scope of service)

Essential local traffic is controlled traffic to which the provision of separation by ATC is applicable, but which, in relation to a particular controlled flight, is not or will not be separeted therefrom by the appropriate minima.

Essential traffic is any aircraft from which a controlled flight should be separated but which is or will be closer to that aircraft than the prescribed minimum.

- call-sign of the aircraft to which the information is transmitted
- the word(s) TRAFFIC or ADDITIONAL TRAFFIC
- relative position of the conflicting traffic; in terms of the 12-hour-clock, and distance in NM if known (used in conjuction with radar information)
- direction of flight of the relevant traffic
- type of aircraft concerned and wake turbulence category (if relevant)
- relative position above (or below) in feet, of the conflicting traffic or level of the conflicting traffic
 

Essential local traffic consists of any aircraft, vehicle or personnel on or near the manoeuvring area, or traffic operating in the vicinity of the aerodrome, which may constitute a hazard to the aircraft concerned.

- identification
- word(s) TRAFFIC or ADDITIONAL TRAFFIC
- description of traffic in terms that will facilitate recognition, e.g. type, speed category and/or colour of acft, type of vehicle, number of persons etc.
- position of the essential local traffic relative to the aircraft concerned and direction of movement

below 100ft:
VIS 5'000 m (above 100ft: 8km), clear of clouds: 1'500 m horizontal and 1'000 ft vertical

L not affected by S
S not affected by M

- caution wake turbulence (whenever a lighter aircraft is following a heavier one)
- caution jet blast
- caution rotor downwash

Approach, flight crews may request an alternate procedure

Entire procedure must be completed – unless the aircraft requests and is cleared for a visual approach.

"OMEGA RADAR, we have RWY 32 in sight, request visual approach."

- class D, E and VMC
- by day
- for arrivals and departures
- at or below A100 during climb or descent (if conditions may become impratical under VMC alternate instructions must be issued prior to entering VMC)

- when preceeding acft has reported to complete its approach without encountering IMC
- preceeding aircraft is in communication with and sighted by the tower and reasonable assurance exists that a normal landing can be accomplished
- when timed approaches are used, the preceeding aircraft has passed the defined point inbound, and reasonable assurance exists that a normal landing can be accomplished
- radar confirms longitudinal spacing

Requested by flight crew or initiated by ATC subject to flight crew concurrence

- reported ceiling is at or above the level of the beginning of the initial approach segment for the aircraft so cleared, or
- pilot reports at the level of the initial approach or at any time in the approach procedure that meteorological conditions are such that a visual approach and landing can be completed
- separation between the aircraft on visual approach and other IFR aircraft shall be provided by ATC – unless a succeeding aircraft reports preceeding in sight and it is instructed to maintain own separation
- if a wake turbulence standard is applicable a wake caution shall be issued

- type of approach and runway in use
- met information (surface wind, visibility, present weather, cloud below 5'000 ft or below highest minimum sector altitude, air temp, QNH, significant meteorological phenomena)
- runway surface conditions
- change in operational status of visual and non visual aids