Performance & W&B

5 free sample questions of the 57 in this topic. The full set is in the app.

1. Question 1

   Pressure altitude is:

   • A.Altitude indicated when the altimeter is set to the local setting
   • B.Altitude when the altimeter is set to 29.92 inHg
   • C.True altitude above sea level
   • D.Height above ground
   Show answer & explanation

   Answer: B. Altitude when the altimeter is set to 29.92 inHg

   Pressure altitude: altimeter reading when set to 29.92 inHg.

2. Question 2

   Density altitude is:

   • A.Indicated altitude
   • B.Pressure altitude corrected for non-standard temperature
   • C.True altitude
   • D.Absolute altitude
   Show answer & explanation

   Answer: B. Pressure altitude corrected for non-standard temperature

   Density altitude = pressure altitude corrected for non-standard temperature. It's the altitude the aircraft 'thinks' it's at in standard conditions.

3. Question 3

   High density altitude most affects:

   • A.Only takeoff roll
   • B.Takeoff roll, climb rate, and engine power (all degraded)
   • C.Only climb rate
   • D.Nothing measurable
   Show answer & explanation

   Answer: B. Takeoff roll, climb rate, and engine power (all degraded)

   High DA reduces thrust (engine), lift, propeller efficiency — longer ground roll, slower climb, reduced service ceiling.

4. Question 4

   If pressure altitude is 3,000 ft and OAT is 20°C above standard, density altitude is approximately:

   • A.3,000 ft
   • B.Lower than 3,000 ft
   • C.Higher than 3,000 ft — density altitude rises with warmer-than-standard air
   • D.Irrelevant
   Show answer & explanation

   Answer: C. Higher than 3,000 ft — density altitude rises with warmer-than-standard air

   Warmer air is less dense → density altitude is HIGHER than pressure altitude. Rule of thumb: ~120 ft per degree C above standard.

5. Question 5

   V-Y (best rate-of-climb speed):

   • A.Is the speed for greatest altitude gain per unit time
   • B.Is the speed for greatest altitude gain per horizontal distance
   • C.Is never given in the POH
   • D.Varies with weight — generally higher than V-X
   Show answer & explanation

   Answer: A. Is the speed for greatest altitude gain per unit time

   V-Y = best rate of climb (altitude per unit TIME). V-X = best angle (altitude per DISTANCE).

52 more Performance & W&B questions are in the app, along with explanations and flashcards for every one.

Airworthy is an independent study aid based on the FAA Airman Certification Standards for the Private Pilot — Airplane knowledge test. It is not affiliated with, endorsed by, or sponsored by the FAA or any government agency.