1. UNIT -4
AERODROME DATA

2. Syllabus
Aerodrome data - Basic terminology – Data handling equipment – Aerodrome reference code – Aerodrome reference point – Aerodrome elevation – Aerodrome reference temperature –Instrument runway – Physical characteristics; length of primary / secondary runway – Width of runways – Minimum distance between parallel runways etc. – Obstacles restriction.

3. Physical characteristics; length of primary / secondary runway

4. Types Of Runway Based On Landing
Visual Runway-used at small airstrips made of asphalt or concrete and no IFR rules
Non Precision Runway -used at small- to medium-size airports. marked with threshold markings, designators, centerlines, and sometimes a 1,000 ft mark called as an aiming point,
Instrument Runway-medium- and large-size airports, consisting of , threshold, designator, centerline, aiming point, and 500 ft (152 m), 1,000 ft (305 m)/1,500 ft (457 m), 2,000 ft (610 m), 2,500 ft (762 m), and 3,000 ft (914 m) touchdown zone marks

5. Types of Runways based on position
Single Runway-a runway optimally positioned for prevailing wind, noise, land use and other determining factors and should accommodate 40 to 50 operations per hour
Parallel Runway-closer from 3000’ to 4300’ accomodating 60 to 120 operations per hour
V Runways-used where there is no wind, used at the same time.
Intersecting Runways-used at a place when there is strong wind throughout the year

6. Parallel runway
Parallel Runway
V runway
Intersecting Runway

7. VISUAL RUNWAY

8. RUNWAY POINTS
Runway Threshold-beginning of a runway with 10’ markers extending to the width of the runway
Width of Runway:Runway Width -100 to 150’ based on Airworthiness requirements
Aiming Points: ft aiming point and extending upto 3000 ft from the Threshold
Touch Down Zone-TDZ-500’ from Threshold
Fixed Distance Markers-1000’ from threshold
Center Line of Runway

9. TYPICAL RUNWAY
Aiming Point

10. RunwayThreshold
With 10’ lines upto
Width of runway
Runway width
Center Line
500’
150’
1000’
Touch Down
Zone
Fixed Distance
Markers

11. RUNWAY THRESHOLD
Beginning of Runway for Landing; A threshold bar is 10 ft (3 m) in width and extends across the width of the runway.

12. RUNWAY WIDTH
Runway Width =150’ based on Airworthiness requirements for AB 380

13. TOUCH DOWN ZONE-TDZ

14. TDZ
Touchdown zone is marked on precision approach runways by the stripes to either side of the runway centerline, usually starting about 500ft down the runway to 3000’
Landing on or close to the touch down target will result in a longer length of runway remaining to decelerate and stop enhancing safety

15. CHENNAI RUNWAY
2 runways
7/25 and
12 /30
Runway size 12000’ x 150’

16. TORA AND TODA Take Off Run Declared-tora
Take off run available (TORA);
Take off distance available (TODA);
Accelerate-stop distance available (ASDA)
Landing Distance Available LDA

17. RUNWAY CHARACTERESTICS
Runway Designator-7/25 and 9/30
Width of Runway-depends on type of plane and on the Wingspace-should not be less than 30 m-usually 45 m
Separation between Parallel Runway-should not < 1300m for parallel approach
Slope of the Runway-should be < 5%
Surface of the Runway-should be loss free friction characterestic
Permissible Cross wind-20 Knts for planes of 1500m field length

19. TYPICAL RUNWAY

20. RUNWAY SCHEMATIC

21. SINGLE RUNWAY-PHASES
1. Upwind leg. A flight path parallel to the landing runway in the direction of landing.
2. Crosswind leg. A flight path at right angles to the landing runway off its takeoff end.
3. Downwind leg. A flight path parallel to the landing runway in the opposite direction of landing.
4. Base leg. A flight path at right angles to the landing runway off its approach end and extending from the downwind leg to the intersection of the extended runway centerline.

22. Single Runway for upward and downward leg

23. SINGLE RUNWAY-PHASES
5. Final approach. A flight path in the direction of landing along the extended runway centerline from the base leg to the runway.
6. Departure leg. The flight path which begins after takeoff and continues straight ahead along the extended runway centerline. The departure climb continues until reaching a point at least 1/2 mile beyond the departure end of the runway and within 300 feet of the traffic pattern altitude.

24. CHARACTERISTICS OF RUNWAY
Designation : RWY NR-18
True Magnitude & Bearing:184*20’ GEO and 184*15’
Runway Dim : 2286 x 45 m
Strength : Partly Asphalt and partly concrete
Slope of Runway : %

25. SPECIFICATION OF TAXIWAY
Width
Surface
Strength

26. TAKE OFF INFO TO PILOT Runway Number Wind Direction and Speed
QNH altimeter setting
the air temperature for the runway to be used, in the case of turbine-engine aircraft;
RVR Values of the Runway
Correct Time

27. DESCEND INFO TO PILOT Runway Number Surface Wind Direction and Speed
QNH altimeter setting