Before the towbar and bypass pin can be removed, what must be set after pushback is completed?

After pushback is completed, the parking brakes must be set before the towbar and bypass pin can be removed. This is an essential safety procedure designed to ensure that the aircraft remains stationary during the disconnect process. If the parking brakes are not engaged, there is a risk that the aircraft could roll or move unexpectedly, which could lead to accidents or damage to the aircraft.

Setting the parking brakes creates a secure and stable environment for ground personnel to perform the disconnection safely. It is a fundamental part of ramp operations to ensure that all measures are taken to maintain control of the aircraft at all times during ground handling activities. This procedure confirms that all necessary precautions are in place before any further actions, such as removing towing equipment, are undertaken.