Question Bank

1. If outside air temperature at 35000 ft is -40°C, the local speed of sound is?

2. The temperature at the airport is 23°C, what is the local speed of sound?

3. An increase of 0.15 mach results in an increase of 93 Kts TAS. If temperature deviation from ISA is +5°C, the approximate flight level is?

4. What is the TAS when pressure altitude = 15000 ft, OAT = -15°C, CAS = 145 Kts?

5. An increase of 0.15 in mach number results in an increase of 93 Kts TAS. If temperature deviation from ISA is +9°C, the FL is?

6. An aircraft is flying at FL 390, temperature is -56.5°C at mach 0.85. The TAS is?

7. Cruising at FL 390, M0.84, is found to give a TAS of 499 Kts. The ISA deviation at this level is?

8. An aircraft is flying at 310 kts TAS at FL290, Temperature deviation is -6°C. The local speed of sound is?

9. What is the TAS when pressure altitude = 20000 ft, OAT = -20°C, CAS = 200 Kts?

10. The velocity of the speed of sound at sea level in the standard atmosphere is?

11. An aircraft flying at FL 310 is cruising at a CAS of 280 Kts. If the correct outside air temperature is -48°C, this will give a mach number of?

12. An aircraft is flying at FL290 at 500 Kts TAS, 0.86M, the temperature deviation is?

13. An increase of 0.15 mach results in an increase of 93 Kts TAS. The local speed of sound is?

14. An aircraft is flying at an indicated altitude of 16000 ft. The outside air temperature is -30°C. What is the true altitude?

15. An aircraft is flying at 1100 Kts TAS at FL650. A change of 0.1M gives a change of 57 Kts TAS. The temperature deviation at FL650 assuming an ISA atmosphere is?