What is the maximum operating speed at altitudes of 8,000 feet and above?

What is the maximum operating speed at altitudes of 8,000 feet and above?

• A. 325 kts
• B. 290 kts
• C. 0.84 Mach
• D. 235 kts

Answer: (A)

The important idea is that the maximum operating speed is defined as indicated airspeed (Vmo). For this aircraft, the published Vmo is 325 knots, and that limit applies in the altitude range including 8,000 feet and above. This IAS limit is set to keep structural loads within what the airplane design can safely handle as air density changes with altitude. While Mach number becomes a factor at higher levels, the question asks for the maximum operating speed in this band, and the value given in the flight manual is 325 knots indicated. The other options represent either lower speeds or a Mach value that isn’t the limiting factor in this specific altitude range, so 325 knots is the correct maximum.

The important idea is that the maximum operating speed is defined as indicated airspeed (Vmo). For this aircraft, the published Vmo is 325 knots, and that limit applies in the altitude range including 8,000 feet and above. This IAS limit is set to keep structural loads within what the airplane design can safely handle as air density changes with altitude. While Mach number becomes a factor at higher levels, the question asks for the maximum operating speed in this band, and the value given in the flight manual is 325 knots indicated. The other options represent either lower speeds or a Mach value that isn’t the limiting factor in this specific altitude range, so 325 knots is the correct maximum.