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A small aircraft has joined the circuit and is on final approach. Code 4202 is set on the transponder and QNH of 1009 is set on the altimeter. The pilot receives the following message from ATC: "G-ABCD cleared to land, runway 01, wind 350 degrees, 10 knots". Which option lists the information that the pilot is expected to hold in working memory at this point?
  • A
    The direction (350 degrees) and speed (10 knots) of the wind vector.
  • B
    The VHF radio frequency of the Control Tower delivering the clearance.
  • C
    The 4 digit code assigned by ATC and set into the transponder (4292) prior to entering the ATZ.
  • D
    The QNH value (1009) that is set into the altimeter.

Refer to figures.
SHORT TERM MEMORY

Otherwise known as working memory, this is for data that is used and forgotten almost instantly. The capacity of the working memory is limited to 5 plus/minus 2 items (7 plus/minus 2 accrding to the old syllabus), which can be stored for an average period of 15 to 20 seconds. Some information can last in short-term memory for longer if rehearsal strategies are used. The information in short-term memory is also highly susceptible to interference. Any new information that enters short-term memory will quickly displace old information. Similar items in the environment can also interfere with short-term memories.

In this case, the only possible new information for the aircraft is about the wind, not even the runway direction is new at this point in the final approach. the other options are already set in the cockpit from a while ago, so would not be left in the working memory.

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