Airspeeds for Safe Operation

The normal procedures rest on a short list of speeds. They are for a standard airplane at gross weight in standard conditions at sea level, and the section's data apply to both the two- and three-blade propellers unless a note says otherwise.

At a glance

• Best rate of climb92 KIAS
• Best angle of climb76 KIAS
• Turbulent air operating speed136 KIAS
• Maximum flap speed115 KIAS
• Final approach, flaps 40°, short field effort82 KIAS
• Intentional one engine inoperative speed85 KIAS
• Maximum demonstrated crosswind velocity17 KTS

Pairs worth separating

• Best rate and best angle — 92 KIAS for rate, 76 KIAS for angle.

• Two one engine speeds — 85 KIAS is the intentional one engine inoperative speed used here; it is not the 92 KIAS best rate of climb.

The turbulent air operating speed in this list is 136 KIAS, the same figure as the maneuvering speed on the panel placard.

Check yourself

• For what airplane and conditions are these speeds given?

• What are the best rate and best angle of climb speeds?

• What is the turbulent air operating speed?

• What is the short field final approach speed with 40° of flap?

• What is the maximum demonstrated crosswind velocity?

Study aid — always fly your aircraft's current AFM/POH.