What is the holding speed for 15,001 to FL310 with two engines?

• A. 225 knots
• B. 220 knots
• C. 235 knots
• D. 240 knots

Answer: (A)

Holding speed is the target indicated airspeed you maintain in a standard hold pattern. In enroute holds, this speed is defined by altitude and how many engines are producing thrust. For a two-engine airplane in the range from 15,001 feet up to flight level 310, the published holding speed is 225 knots. This value strikes a balance: it provides enough energy to make orderly standard-rate turns and hold entry and exit cleanly, while staying clear of overly high speeds that could push you toward Mach limits at higher altitude. Slower than 225 knots would waste energy and slow the pattern unnecessarily, while faster speeds (like 235 or 240 knots) reduce maneuvering margin and can approach performance limits in gusty conditions or during engine-related handling changes. So, 225 knots is the appropriate target for that altitude and engine configuration.