Aircraft Ground Handling and Support Equipment

Aircraft ground handling encompasses the procedures and equipment necessary for ensuring that aircraft are safely secured while parked or stored. This includes various tie-down procedures tailored for different types of aircraft, such as light and heavy aircraft, seaplanes, ski planes, and helicopters.

Tie Down Procedure

Tie down procedures are crucial in maintaining the stability of aircraft on the ground. The primary method involves stringing a rope through the aircraft's tiedown rings, ensuring that any slack is secured with an overhand or slip knot. However, these knots should not be relied upon to hold tension, as they can slip under load. Proper aircraft tie down minimizes the risk of movement caused by high winds or disturbances from nearby aircraft, making it critical for the safety of personnel and infrastructure.

Reason for Tie Down Procedure

Without proper tie down, aircraft can be moved or overturned during strong winds, posing risks of injury or damage to not only the aircraft but also to other nearby aircraft, buildings, and equipment. Effective tie downs safeguard against these risks and are recommended particularly for smaller aircraft in adverse weather conditions.

Best Practices for Aircraft Tie Down

Use approved tie down equipment that meets regulatory standards.
Choose appropriate tie down points based on aircraft design and manufacturer specifications.
Be aware of obstacles that may affect the aircraft's movement.
Ensure adequate tension in the tie down ropes without overtightening.
Periodically check tie downs to ensure they have not loosened or degraded.

Securing Light Aircraft

Light aircraft are typically secured using ropes tied to the aircraft's provided tiedown rings. Care must be taken as tying ropes to lift struts can cause mechanical damage by bending the structure. When using manila rope, additional slack is required to account for wet conditions (about 1 inch) to prevent overly tight conditions that stress the aircraft. Only anti-slip knots, such as the bowline, should be used.

Securing Heavy Aircraft

Heavy aircraft may employ either rope or cable tie down methods, with the number of tie downs determined by expected weather conditions. Surface control locks should be engaged to secure the aircraft, and steps include head positioning into prevailing wind, installing control locks, chocking all wheels, and securing with proper tiedown anchors.

Tie Down Procedures for Seaplanes

Seaplanes can be secured to docks or buoys but must be properly tied down to prevent bobbing in waves, which can cause damage. In extreme weather, where flying out is inadvisable, specific compartments may be flooded for stability. Anchoring in sheltered areas can also help avoid damage during storms.

Tie Down Procedure for Ski Planes

Ski planes should be secured like standard land planes. When the wind is high, the mast may be disconnected from the wing and secured near the ground. Packing snow around the skis can also help, although operators must ensure free ends of the rope are kept dry to prevent freezing, which can cause damage when moving the aircraft.

Tiedown Procedures for Helicopters

Helicopters require similar precautions as other aircraft to prevent structural damage from high winds. Whenever possible, they should be secured in hangars or tied down. It is important to face the helicopter into the wind and to follow manufacturer guidelines for tiedown procedures, ensuring all ground handling wheels are secured inside the aircraft when not in use.

Procedure for Securing Weight Shift Control Aircraft

Weight-shift control aircraft should be secured similarly to conventional aircraft. However, in high winds, disassembly or moving the aircraft into a hangar is advisable for added protection. The mast can be disconnected, and the wings secured close to the ground when necessary.

Aircraft Towing Procedures

Aircraft can be towed for movement with engines off, and this requires a qualified operator in the pilot’s seat to manage braking and monitor hydraulic systems. Specific procedures must be followed, including using the appropriate ground vehicle and maintaining effective communication among team members.

Taxiing Aircraft

Taxiing refers to moving an aircraft on the ground under its power. Specific ATC clearances are required to ensure safe operation, avoiding obstacles, and ensuring the correct taxi routes are followed. Signalmen assist pilots due to potential visibility obstructions.

Servicing Aircraft Air, Oil, and Fluid

Proper maintenance includes checking fluid levels using a dipstick or sight gauge. Caution is required not to overfill the oil system, as this can lead to foaming and system malfunction. The correct type of oil and hydraulic fluid must always be used, following the manufacturer's specifications.