Aircraft Performance

Question 1

Define;
ASDA
LDA
TODA
Clear way

Answer 1

ASDA – TORA + Stop-way
§ LDA – Runway available for ground run of aircraft landing.
§ TODA – TORA + clearway
§ Clearway – A clear area extended from the centreline that an aircraft can use to climb to maintain obstacle clearance.

Question 2

Define a contaminated runway

Answer 2

Contaminated Runway – more than 25% covered by:

• More than 3mm deep water or slush
• More than 20mm of loose snow
• Compact snow or ice, including wet ice.

Question 3

Define a wet runway

Answer 3

Wet runway – no more than 3mm of water

Question 4

V1 dry and V1 wet

Answer 4

V1 Dry — must allow the aircraft to suffer an engine failure and reach 35ft not less than Vmcg
V1 Wet – must allow the aircraft to suffer an engine failure and reach 15ft above the runway end. Must not be less than V mcg.

Both must allow the aircraft to stop with remaining runway

Question 5

1st segment of climb

Answer 5

Screen height 35'dry/15'wet (V2)to gear up
A/C config
Gear retracting
tO flap/salt
TO Thrust

Question 6

2nd segment Climb

Answer 6

Get up to start of level off
A/C Config
Gear up
TO flap/salt
TO Thrust
V2 speed (constant KIAS)

Question 7

3rd segment Climb

Answer 7

Level flight flap/salt retraction
Aircraft config
Gear up
Flap/salt retracting
TO Thrust 
Acceleration to green dot

Question 8

Final (4th) segment Climb

Answer 8

Clean config Climb segment- minimum 1500'
Aircraft config
Gear up
Flap/slat retracted
MCT
At green dot

Question 9

Define Green Dot

Answer 9

Green dot speed.

Engine-out operating speed in clean configuration. (Best lift-to-drag ratio speed).

Also corresponds to the final takeoff speed. Represented by a green dot on the PFD scale. Below 20 000 ft equal to 2 × weight (tons) +80 Above 20 000 ft, add 1 kt per 1 000 ft

Question 10

Landing distances

Answer 10

At dispatch the required Landing distance (RLD) must be the actual landing distance (ALD) x 1.67 dry. Wet is ALD x 1.92

In flight it is X 1.15 (automatically done on fly smart)

No factor required in emergency