Performance Terminology

Question 1

What is the ISA Temperature at Sea Level?

Answer 1

International Standard Atmosphere temperature at sea level is 15 degrees C or 59 degrees F

Question 2

What is the ISA Pressure at Sea Level?

Answer 2

International Standard Atmosphere pressure at sea level is 29.92 inches

Question 3

What is the ISA Temperature Gradient or Lapse Rate?

Answer 3

The temperature decreases or lapses 2 degrees C per 1,000 feet of altitude.

Question 4

OAT

Answer 4

Outside Air Temperature is the free air temperature obtained from a ground station or inflight temperature gauges adjusted for instrument error and compressibility

Question 5

Pressure Altitude

Answer 5

Altitude measured from standard sea level pressure (29.92) by an altimeter OR Height above the standard datum plane (29.92)

Question 6

Indicated Pressure Altitude

Answer 6

Number actually read from the altimeter when 29.92 is set.

Question 7

Station Pressure

Answer 7

Actual atmospheric pressure at field elevation

Question 8

Takeoff Power

Answer 8

Maximum Power permissible for takeoff

Question 9

Maximum Continuous Power

Answer 9

Maximum power that can be used continuously during flight

Question 10

Maximum Climb Power

Answer 10

Maximum power permissible during climb

Question 11

Maximum Cruise Power

Answer 11

Maximum power permissible during cruise

Question 12

EGT

Answer 12

Exhaust Gas Temperature

Question 13

Climb Cradient

Answer 13

The ratio of change in height gained to horizontal distance traveled.

Question 14

Demonstrated Crosswind Velocity

Answer 14

Maximum crosswind component for which adequate control of the airplane was actually demonstrated during takeoff and landing (This was done by the manufacturer during flight tests)

Question 15

Accelerate-Stop Distance

Answer 15

The distance required to accelerate to a specified speed, lose an engine and bring the airplane to a stop.