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CAP493 MATS Pt 1 > Aerodrome Control > Flashcards

Flashcards in Aerodrome Control Deck (15):

What services shall an Aerodrome Control unit provide? (3 items)

Aerodrome Control Service.

Basic Service.

Alerting Service.


What shall Aerodrome Control co-ordinate with Approach Control? (2 items)

Departing IFR flights

Arriving aircraft which make their first call on the tower frequency (unless they are transferred to Approach Control).


What shall Approach Control co-ordinate with Aerodrome Control? (3 items)

Aircraft approaching to land; if necessary requesting landing clearance.

Arriving aircraft which are to be cleared to visual holding points.

Aircraft routing through the traffic circuit.


List the information that should be given as Essential Aerodrome Information. (11 items)

--Construction work or maintenance on the manoeuvring area.
--Rough portions of the manoeuvring area and whether marked or not.
--Failure or irregular functioning of the aerodrome lighting system.
--Failure or irregular function of approach aids.
--Aircraft parked close to the runways or taxiways and aircraft engaged in ground running of engines.
--Depth of snow layers on runways and taxiways, snow piled or drifted on the manoeuvring area, melted snow and slush, rutted ice and snow.
--In snow and ice conditions information concerning sweeping and/or sanding of runways and taxiways.
--Reports on the estimated braking action either from testing or pilot reports.
--Bird formation or individual large birds reported or observed on or above the manoeuvring area, or in the vicinity of the aerodrome plus any bird scaring being carried out.
--Warnings of the presence of water on runways.
--Information on the location and operational status of any arrester gear installation.


What can the Surface Movement Radar be used for?

When traffic on the aerodrome cannot be adequately seen from the tower during low visibility or night-time as follows:
--Monitor the movements of aircraft and vehicles on the manoeuvring area.
--Ensure that departing aircraft are lined up on the correct runway.
--Determine that the runway is clear of aircraft and vehicles.
--Ascertain that aircraft have commenced take-off.
--Monitor traffic positions to facilitate switching of taxiway lighting.
--Monitor and assist emergency vehicles.


When can a multiple line-up clearance be used?

--During daylight hours

--All aircraft are continuously visible to the controller

--All aircraft on the same frequency

--Pilots are advised of the number of aircraft ahead in the departure sequence, and the position/runway from which these aircraft will depart

--Physical characteristics of the runway of not render the preceding aircraft in the sequence invisible to the succeeding aircraft on the same runway.


What is the phraseology for a) cancelling a take-off clearance and b) stopping an aircraft already cleared and departing?

a) "EZY123 hold position, cancel take-off clearance I say again cancel take-off, acknowledge."

b) "EZY456 stop immediately, I say again EZY456 stop immediately, acknowledge."


What is the typical distance/speed that an aborted take-off has an increased risk to the aircraft?

80kts, which is approximately 300m into the take-off roll.


When can a landing aircraft be permitted to touch down before a preceding landing aircraft is clear of the runway? (5 items)

--The runway is long enough to allow safe separation between the two aircraft and there is no evidence to indicate that braking may be adversely affected;

--During daylight hours;

--The preceding landing aircraft is not required to backtrack in order to vacate the runway;

--The controller is satisfied that the landing aircraft will be able to see the preceding aircraft which has landed clearly and continuously until it has vacated;

--The pilot of the following aircraft is warned. Responsibility for ensuring adequate separation rests with the pilot of the following aircraft.


What may the information derived from the ATM be used for, and when approved what are the additional uses? (10 items)

--Determine the landing order, spacing and distance from touchdown
--Assist in applying longitudinal separation for departures
--Confirm that the initial departure track conforms with the clearance issued
--Provide information on the position of other aircraft in the circuit or on the approach

Additional uses (with specified training, on AIR only - GND must be open, detailed in MATS2):
--Following identification validate SSR codes and verify Mode C readouts
--Monitor the progress of overflights identified by Radar to ensure no conflictions
--Establish separation between departing aircraft
--Pass traffic information
--Establish separation in the event of a missed approach
--Assist in taking initial corrective action when the separation between arriving aircraft becomes less than the prescribed minima.


When should aerodrome lighting be displayed?

When the visibility is less than 5km, and/or cloud base is less than 700ft. And at night.


What information is required when a laser attack is reported? (5 items)

--Time of the attack
--Altitude and position at the time of the attack
--Description of the laser light (colour, pulsing etc)
--Any avoiding action taken
--Any impact on vision/concentration


When should wind shear be reported and what should reports from pilots contain?

The information should be relayed to all subsequent flights until confirmation is received that the condition no longer exists.

Report from pilot should contain:
--Warning of the presence of windshear
--The height or height band where the shear was encountered
--The time at which it was encountered
--Details of the effect of the windshear on the aircraft (eg. speed gain/loss, vertical speed tendency, change in drift)


When should an RVR be passed?

--Whenever the met report shows visibility less than 1500m;

--Whenever the IRVR display is indicating an RVR value equal to or less than the maximum for the system;

--Whenever shallow fog is reported and during a period for which it is forecast.


What are the actions if one or more transmissometer fails?

If the touchdown end fails, "RVR Rwy 26, touchdown nt available, mid-point 600m, stop-end 400m". OK to continue with one failure. If the touchdown and midpoint fail the RVR system is unserviceable, runway change may be the only way to bring the system back.