When managing thrust to maintain IAS during a glide slope approach, what initial action is needed if the airspeed is too low?

When managing thrust to maintain indicated airspeed (IAS) during a glide slope approach, the correct action of increasing power is essential if the airspeed is too low. In a glide slope approach, maintaining the correct airspeed is crucial for safety and performance. When the IAS drops below the desired level, it indicates that the aircraft may not have enough lift or control authority for a safe landing.

Increasing power helps to generate additional thrust, allowing the aircraft to accelerate and achieve the required airspeed. This action is especially important because maintaining a correct approach speed is vital for optimal control during landing and to ensure that the aircraft remains stable in the glide path.

Other suggested actions, while they may have an impact on airspeed, are not the immediate initial responses to a low airspeed condition. Reducing pitch attitude could potentially increase speed, but it might also result in a descent profile that is inconsistent with maintaining the glide slope. Extending flaps is a means to increase lift but may not be suitable if the aircraft is already below a safe speed, which could result in a stall. Leveling off could help stabilize the approach but does not directly address the need to increase airspeed. Thus, increasing power is the most logical and effective initial action in this scenario