MAAS – Meet and Assist. This is used to describe passengers who require the help of Meet and Assist who help passengers with restricted mobility move to and from the aircraft. MEDA – This is used to describe a passenger who has medical needs.
This is the assistance that the airport employee provides to the passenger. Disabled persons with reduced mobility may use this service. Depending on the needs of the passenger, the employee can help him in the check-in process and when boarding the plane.
A unique four-digit code is assigned to an individual aircraft by air traffic control and set in the transponder. This is called a 'squawk' code. A ground-based secondary surveillance radar sends a radio interrogation signal to the transponder. The data received is displayed on an air traffic controller's radar screen.
The International Air Transport Association's (IATA) Location Identifier is a unique 3-letter code (also commonly known as IATA code) used in aviation and also in logistics to identify an airport.
Aviators often speak “pilot English” to avoid miscommunications over radio transmission. “Tree” for instance, means three, “fife” is the number five and “niner” means nine, says Tom Zecha, a manager at AOPA. The variations stemmed from a desire to avoid confusion between similar-sounding numbers, he says.
Code 7600 is the code for a loss of radio. If a pilot's radio goes out during a fight, they can enter 7600 into the transponder. Then they should proceed to their intended airport following a standard landing plan. Pilots should be extra careful and on alert for other aircraft around them in the sky.
With the rapid growth in the aviation industry, in 1947, the identifiers expanded to three letters and LA received an extra letter to become LAX. The letter X does not otherwise have any specific meaning in this identifier.