Flight Rules  Type of Aircraft  SSR Code 
IFR including Flight Rules Y and Z  Within Auckland Oceanic FIR: Departing New Zealand FIR Inbound to or overflying New Zealand FIR  Code assigned on departure Last code assigned, or 2000 
Within New Zealand FIR  Code assigned, or 2000 
VFR  Fire suppression and reconnaissance (fixed wing and helicopters)  0111 
Civil aeroplanes other than gliders  1200 
Gliders and balloons  1300 
Aircraft in General Aviation Areas  1400 
Civil helicopters  1500 
Within Auckland Oceanic FIR  2000 
Aircraft operating in aerodrome traffic circuit at controlled aerodromes  2200 
Defence aeroplanes  6000 
Defence helicopters  6500 

Table ENR 1.6-2
Emergency SSR Codes

Occurrence  SSR Code 
Unlawful interference  7500 
Loss of radio communication  7600 
In-flight emergency when no code has been allocated by ATC  7700 

Formation SSR codes and procedures
3.3.4 In military formations, an individual SSR code will be assigned to each aircraft in the formation. The last number of the code should correspond to the aircraft’s formation number e.g. RED 1 = 6121, RED 2 = 6122, etc.
3.3.5 In civil formations, an SSR code will be assigned to the formation leader, and all other aircraft will be assigned code 2020.
3.3.6 Unless otherwise instructed by ATC, all aircraft in the formation are to squawk NORMAL, except that within airspace under the control of Ohakea, the leader is to squawk NORMAL and all other aircraft are to squawk STANDBY, unless otherwise instructed.
3.3.7 Where members of a formation have been instructed by ATC to squawk STANDBY the formation leader must advise ATC immediately there is a relaxation or significant change (laterally or vertically) to the formation’s configuration. This is to enable ATC to re-evaluate separation requirements between the aircraft in the formation and other aircraft.

3.4 Transponder Procedures for Pilots
3.4.1 The use of SSR transponder and altitude reporting equipment is prescribed in CAR 91.247.
3.4.2 Pilots must operate transponders in accordance with ATC instructions and must acknowledge by reading back code setting instructions.
3.4.3 Pilots must not operate the “IDENT” feature unless instructed by ATC.

General
3.4.4 The pilot of an aircraft who has received specific instructions concerning the transponder setting, or who is operating a VFR code in transponder mandatory airspace, must, unless complying with emergency procedures, maintain that setting until otherwise advised by an ATS unit.
IFR
3.4.5 All aircraft on an IFR flight plan will receive a specific, discrete transponder code for that flight as part of an ATC clearance.
3.4.6 The pilot of an IFR aircraft flying in the New Zealand FIR, but not yet in receipt of an ATC clearance, must set code 2000.
3.4.7 The pilot of an IFR aircraft flying in the Auckland Oceanic FIR must set code 2000 unless a specific transponder code has been specified by an ATS unit.
VFR
3.4.8 A limited number of transponder codes are available for allocation to VFR aircraft on cross-country flights. When filing a VFR flight plan via IFIS, the pre-allocated code will be shown in the message acknowledging acceptance of the filed flight plan. When filing via FAX or by phone with the National Briefing Office, no acknowledgment of a pre-allocated code will be made.
3.4.9 Application for permanent codes must be made to the National Briefing Office.
3.4.10 The pilots of all VFR transponder equipped aircraft, whether on flight plan or not, who have been assigned a discrete aircraft or ATC code, should operate that code at all times, unless otherwise instructed by ATC, or when an emergency SSR code is required. The pilots of other VFR aircraft should set the code indicated in Table ENR 1.6-1.
　
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