5.) AGA - Declared Distances Flashcards
TORA
Take Off Run Available
This is the length of runway available and suitable for the ground run of an aeroplane taking off.
In most cases it will correspond to the length of the runway pavement.
TODA
Take Off Distance Available
This is the length of the TORA plus the length of any associated clearway.
Where no Clearway exists, the TORA will equal the TODA.
ASDA
Accelerate-Stop Distance Available
This is the length of the TORA plus the length of any associated stopway.
Where no stopway exists, the ASDA will equal the TORA.
LDA
Landing Distance Available
This is the length of the runway which is available and suitable for the ground landing run of an aeroplane.
Runway 04 has a displaced threshold, making its LDA
shorter than runway 22.
Define Stopway
A defined rectangular area on the ground at the end of the take-off run available prepared as a suitable area in which an aircraft can be stopped in the case of an abandoned take-off.
Need not have bearing strength of associated runway, but capable of supporting aircraft using aerodrome. Must have same width as runway
Clearway
A defined area on the ground under the control of the appropriate entity, selected or prepared as a suitable area over which an aeroplane may make a portion of its initial climb to a specified height.
RESA
Runway End Safety Area
RESA is intended to minimise the risks arising
when an aeroplane overruns or undershoots a
runway.
Shall be provided at each end of the strip
enclosing Runways Code 3 & 4 and Instrument
Runway Code 1 & 2.
Declared distances should be reduced to
accommodate RESA.
Not essential for visual runways Code 1 & 2.
Normally minimum length 90m Code 3 & 4
minimum length 30m Code 1 & 2 (instrument).
Width should be twice that of associated
runway symmetrically disposed about extended
centreline.
Surface not to the same standard as graded area
but must give unimpeded access to emergency
services.
If introduction of RESA could adversely affect
operations, the CAA must be consulted
