Use of electronically-delivered route and departure clearances

Within the real-world NZZC, electronically-delivered departure clearances (DCL) are available at NZAA, NZWN, NZCH and NZQN, instead of traditional voice via VHF/HF radio. DCL reduces frequency congestion and controller workload and eliminates read-back/hear-back errors. Aircraft must meet specific criteria for a DCL (real-world) in the NZZC.

A DCL is similar to the so-called "pre-departure clearance (PDC)", and the terms are interchangeable for VATSIM purposes. The main difference in the real world is that a PDC requires a CPDLC connection and is usually pushed automatically, whereas a DCL is manually requested via ACARS. 

 In VATSIM, and the vatSys controller client where PDC is integrated, the term "PDC" is used exclusively; therefore, this material does likewise.

The following elements are included in a PDC:

  • [callsign]
  • CLEARED [date/time] [destination]
  • PDC DCL1 CLEARED TO [destination] OFF [assigned runway] VIA [assigned SID]
  • SQUAWK [SSR code] 
  • NEXT FREQ [frequency]
  • ATIS [ATIS identifier]
  • TRANSITION: SEE SID ROUTE: [route]
  • ALT: [altitude/flight level]

Example: 

ANZ440

CLEARED 210300 NZAA

PDC DCL1 CLEARED TO NZAA OFF 16 VIA TAXUP5Q

SQUAWK 5062

NEXT FREQ 121.9

ATIS N

TRANSITION: SEE SID ROUTE: WNAA2

ALT: 310

A successful PDC transmission displays an 'S' or a right arrow in the aircraft's vatSys strip next to the altitude.

In New Zealand, pilots are not required to read a PDC back (i.e., repeat back). Instead, pilots acknowledge receipt by squawking the correct transponder code. 

A PDC is not taught as part of the training syllabus. However, controllers may use the resource.

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