Aircraft marshalling


Aircraft marshalling is visual signalling between ground personnel and pilots on an airport, aircraft carrier or helipad.

Activity

Marshalling is one-on-one visual communication and a part of aircraft ground handling. It may be as an alternative to, or additional to, radio communications between the aircraft and air traffic control. The usual equipment of a marshaller is a reflecting safety vest, a helmet with acoustic earmuffs, and gloves or marshalling wands–handheld illuminated beacons.
At airports, the marshaller signals the pilot to keep turning, slow down, stop, and shut down engines, leading the aircraft to its parking stand or to the runway. Sometimes, the marshaller indicates directions to the pilot by driving a "Follow-Me" car prior to disembarking and resuming signalling, though this is not an industry standard.
At busier and better equipped airports, marshallers are replaced on some stands with a Visual Docking Guidance System, of which there are many types. Boeing C-17 being marshalled at London Heathrow Airport.
On aircraft carriers or helipads, marshallers give take-off and landing clearances to aircraft and helicopters, where the very limited space and time between take-offs and landings makes radio communications a difficult alternative.

U.S. Air Force procedures

Per the most recent U.S. Air Force marshalling instructions from 2012, marshallers "must wear a sleeveless garment of fluorescent international orange. It covers the shoulders and extends to the waist in the front and back. During daylight hours, marshallers may use high visibility paddles. Self-illuminating wands are required at night or during restricted visibility."
Marshallers, like other ground personnel, must use protective equipment like protective goggles or "an appropriate helmet with visor, when in rotor wash areas or in front of an aircraft that is being backed using the aircraft's engines."
It also prescribes "earplugs, muff-type ear defenders, or headsets in the immediate area of aircraft that have engines, Auxiliary Power Unit, or Gas Turbine Compressor running." Transall C-160D behind the Follow-me car at RIAT, England.

Noise exposure

Excessive noise can cause hearing loss in marshallers, either imperceptibly over years or after a one-time acoustic trauma. In the United States noise limits at work are set by the Occupational Safety and Health Administration.

Aircraft signals

Aircraft signals vary slightly among the North Atlantic Treaty Organization Standardization Agreement 3117, Air Standardization Coordinating Committee Air Standard 44/42A, the Appendix 1 of the Annex 2 to the Chicago Convention on International Civil Aviation, and Federal Aviation Administration signals. the US Air Force generally follows ICAO guidance if its guidance conflicts with FAA, ICAO, or NATO documents.
The ICAO defines numerous important codes for use in international aviation.

Helicopter signals