Which signal indicates Release sling load?

• A. Move backwards
• B. Release sling load
• C. Takeoff
• D. Move upwards

Answer: (B)

In sling load operations, clear hand signals tell the pilot what to do, and there is a specific signal whose purpose is to disengage the load. The signal that indicates releasing the sling load is the explicit "release sling load" command. When this signal is given, the helicopter crew uncouples the load from the hook and allows it to be released at the designated drop point or on the ground.

The other signals point to different actions: moving backwards is for repositioning the aircraft or crew, moving upwards means lifting the load, and takeoff is, of course, starting flight. None of these indicate releasing the load, so the release signal is the correct one.