Takeoff & Landing Performance

Question 1

General Higher Self-Minimums

Answer 1

Add at least a 20% safety margin to all POH/AFM performance figures, as insurance

Question 2

When to Pull Power Back

Answer 2

>3000 AGL unless required (e.g. Traffic Patterns)

This is a good Rule of Thumb for mitigating risk of engine malfunction while in a low and slow flight condition

Question 3

Takeoff distance

Answer 3

Increase by 10% for each 1,000 foot density altitude above sea level

Question 4

Ground roll

Answer 4

Increases or decreases by 10% for every 10°C change in temperature from ISA

For every 10% change in weight, ground roll changes 20%

Question 5

Abort distance

Answer 5

Abort the takeoff if the aircraft has not achieved 70% of its flying speed by the time it has used 50% of the runway

Question 6

Rotate speed (V_r)

Answer 6

Generally equal to 1.15 Vs

Question 7

Obstacle clearance

Answer 7

The distance/time to clear an obstacle is reduced by 5% for every 100 lbs. below max gross weight

Question 8

Runway gradient

Answer 8

A 1% airport grade will affect the aircraft by 10% over what is stated in the POH/AFM

Question 9

Tailwind

Answer 9

A tailwind of 10% of your approach speed will increase landing distance by 20%

Question 10

Headwind

Answer 10

A headwind of 10% or your approach speed will decrease landing distance by 20%

Question 11

Convert Climb Gradient to Climb Rate

Answer 11

1. Multiply the Gradient by the Airspeed [Climb Rate (fpm) = Climb Gradient (%) x Airspeed (kts)]

Example 1: Climb Gradient = 5.5%, Airspeed 220 kts (5.5 x 220 = 1210 ft/min

2. Convert Glimb Gradient to Climb Rate in hundreds of feet (divide your Current Ground Speed by 60 and multiply by Climb Gradient)

Example 2: Want to gain 200 ft/nm and 150 kts Ground Speed, your rate of climb is 500 fpm (150 kts ÷ 60 x 200 fpm = 500 fpm)