Day 2 Flashcards
Define ATC clearance
Authorisation for an a/c to proceed under conditions specified by an ATCU
A clearance shall include
A/c Identification
Clearance limit
Route
Levels and changes of level
Additional items to a clearance
ATFM slot
Time restrictions
Comms instructions
Any special instruction
Define clearance limit
A clearance ilimit is the point to which an a/c is granted an ATC clearance and shall be specified by naming;
an a/d
a reporting point
a controlled or advisory airspace boundary
When shall an a/c be cleared for its entire route?
it is planned to remain within controlled or advisory airspace throughout the flight and
There is reasonable assurance that prior coordination will be effected ahead of the a/c
Rules on amendments to clearance
When a clearance is amended a new clearance must be issued
Pilots receive new clearance in full, the new clearance automatically cancels the old one
Controllers must ensure separation when the new clearance alters SID profile
If the SID route is altered the level profile is to be included in the clearance
Withholding clearance
Aerodrome Authority and certain other persons are empowered to prohibit flight and may instruct ATC to withhold a clearance. These persons are listed in unit instructions.
If ATC believe that a planned flight is liable to endanger life or involve a breach of legislation he/she is to:
Warn the pilot and obtain acknowledgement
Inform the pilot that the appropriate authority will be informed
The pilot may still elect to depart but phraseology is
‘there are no traffic reasons to restrict take off’
Define runway end safety area
an area symmetrical about the extended runway centreline and adjacent to the end of the strip primarily intended to reduce the risk of damage to an aeroplane undershooting or over running the runway
RESA length
Depends on A/C type, level of a/c activity, local condidtions.
For a code 3/4 runway minimum 90M recommeneded 240M
RESA Width
Should be that of the associated cleared and graded area, with a minimum of twice runway width, symmetrically disposed about the extended centreline.
RESA should not
hinder the movements of rescue and fire fighting vehicles, the effectiveness of the rescue and fire fighting provision or endanger a/c that undershoot or overshoot the runway.
Taxi way width
A straight portion of the taxiway should have a width of not less than 23m when the code is E or D and the taxiway is intended for use by a/c with outer main gear span of 9m or more
Define taxiway strip
An area of specified dimensions enclosing a taxiway and intended to protect a/c operating on the taxiway and to reduce the risk of damage to an a/c running of the taxiway
Taxiway strip dimensions
Code E taxiway
Taxiway strip 47.5m either side of c/l
Graded area 22m either side of c/l
Taxiway holding bays and holding positions location
Not to be located closer to the edge of the runway centreline than the relative graded area of the runway.
On precision app rwy this may be increased to avoid;
Interference with radio aids
penetration of the obstacle free zone by a holding a/c
a holding a/c being accountable in the calculation of obstacle clearance altitude/height (OCA/H)
Define obstacle free zone
A volume of airspace extending upwards and outwards from an inner portion of the runway strip to a specified upper limits which is kept free of all obstructions except for minor specified items
Define TORA
This is the length of runway available and suitable for the ground run of an aeroplane taking off.
Define ASDA
Accelerate stop distance available this is the length of the TORA plus the length of any associated stopway
TODA
Take off distance available the length of the TORA plus the length of any associated clearway
LDA
This is the length of the runway available and suitable for the ground landing run of an aeroplane
What is PCN
a number expressing the bearing strength of a pavement for unrestricted operations
What is ACN
Aircraft classification number
is a a number expressing the relative effect of an a/c load on a pavement for a specified sub grade
TH markings
RWY designator in side piano keys…
Non precision instrument RWY
Long Non instrument RWY LDA>1200m
Where TH requires emphasis
TH marking rwy designator infront of piano keys
Precision rwys
RWYS with aiming point and td markers…
All precision and ILS equipped RWY
Other runways if conspicuity needed
paved non instrument rwys where there is no approach slope guidance
RWYS with edge markingg
All precision app runways
any rwy with insufficient contrast between the rwy and shoulders
Mandatory signs
white text red background
Information signs
black and yellow
